ArticlePDF Available

Abstract and Figures

Dalechampia seccoi is a new endemic species of Euphorbiaceae from the Atlantic Forest domain, southeastern Brazil. Here we describe and illustrate the new species. Collections of botanical material, and standard herbarium practices were applied. The new species is vegetatively similar to D. alata, D. erythrostyla, D. pentaphylla, D. violacea, and D. purpurata, however it is distinguished by exclusive characters such as involucral bracts 4‒5-lobed, pinkish, staminate sepals vinaceous, resin darkish and stigma yellow lobed to crateriform. The new species is restricted to Seasonal Semideciduous Forest with altitudes of ca. 700 m from Caparaó, south of the state of Espírito Santo. In addition, we provide field photographs, preliminary conservation status assessments using IUCN Red List guidelines, as well as a checklist and key for morphological correlated species.
Content may be subject to copyright.
doi: https://doi.org/10.1590/1677-941X-ABB-2023-0027
Acta Botanica Brasilica
, 2023, 37: e20230027
Original article
1 Universidade Federal Rural de Pernambuco, Depto. Botânica, Recife, PE, Brazil.
2 Universidade Federal de Pelotas, Campus Capão do Leão, Pelotas, RS, Brazil.
3 Real Jardín Botánico (RJB), CSIC, Plaza de Murillo 2, 28014 Madrid, Spain.
4 Universidade Federal de Rondônia, Depto. Biologia, Porto Velho, RO, Brazil.
5 Universidade Estadual de Campinas, Programa de Pós-graduação em Biologia Vegetal, Campinas, SP, Brazil.
* Corresponding author: jonecmendes5@gmail.com
.
Dalechampia seccoi (Euphorbiaceae), a threatened new species
from Southeastern Brazil
Jone Clebson Ribeiro Mendes1*
, Josimar Külkamp2, 3
, Narcísio Costa Bigio4
,
Filipe Torres-Leite5
and Rafaela Alves Pereira-Silva1
Received: February 05, 2023
Accepted: May 23, 2023
ABSTRACT
Dalechampia seccoi is a new endemic species of Euphorbiaceae from the Atlantic Forest domain, southeastern Brazil.
Here we describe and illustrate the new species. Collections of botanical material, and standard herbarium practices
were applied. e new species is vegetatively similar to D. alata, D. erythrostyla, D. pentaphylla, D. violacea, and
D. purpurata, however it is distinguished by exclusive characters such as involucral bracts 4‒5-lobed, pinkish, staminate
sepals vinaceous, resin darkish and stigma yellow lobed to crateriform. e new species is restricted to Seasonal
Semideciduous Forest with altitudes of ca. 700 m from Caparaó, south of the state of Espírito Santo. In addition,
we provide eld photographs, preliminary conservation status assessments using IUCN Red List guidelines, as well
as a checklist and key for morphological correlated species.
Keywords: Acalyphoideae, Caparaó, endemism, Espírito Santo, Seasonal Semideciduous Forest, taxonomy.
Introduction
Dalechampia L. is a consistent morphologically genus,
characterized by its peculiar pseudanthial inorescence,
which stands out due the involucral bracts, usually colorful.
Its pistillate cymule present three owers and the staminate
pleiochasium has few to numerous owers (Webster &
Armbruster 1991). Dalechampia is one species-rich genera
of the subfamily Acalyphoideae (Euphorbiaceae), it includes
ca. 130 species, being the neotropical region the center of
greatest diversity with 90 species, representing 69% of
global taxa (Pereira-Silva et al. unpubl. res.).
In Brazil, about 73 species are recorded and distributed
in all phytogeographic domains, of which 35 are reported
for the Southeastern region (Pereira-Silva et al. 2019). e
Atlantic Forest is one of the richest domains in number of
Dalechampia species (29 spp.), three less than in the Cerrado
(Pereira-Silva et al. 2022). Recent studies in Dalechampia
recorded 15 species for the state of Espírito Santo, in
addition to the conrmation of a new taxon for science
(Mendes et al. 2022).
Template: Editora Letra1 | www.editoraletra1.com.br
Jone Clebson Ribeiro Mendes, Josimar Külkamp, Narcísio Costa Bigio, Filipe Torres-Leite and Rafaela Alves Pereira-Silva
2
Acta Botanica Brasilica
, 2023, 37: e20230027
Based on morphological characters the new species
is classified in Dalechampia sect. Dioscorifoliae Pax &
K.Hoffm. by the leaves simples, lobed or palmately
compound, involucral bracts pinkish, staminate bracts 4,
free, resiniferous gland with margin mbriate and seeds
rugose (Webster & Armbruster 1991). Regional oras
and taxonomic studies have contributed to improve the
knowledge of the section Dioscoreifoliae in Brazil (e.g.,
Pereira-Silva et al. 2016; 2018; 2019; 2020; Athiê-Souza
et al. 2019; Mendes et al. 2021).
Dalechampia seccoi is vegetatively similar to D. alata
Müll.Arg., D. erythrostyla R.A. Pereira-Silva & A.L. Melo,
D. pentaphylla Lam., D. violacea Pax & K.Hoffm. and
D. purpurata Cordeiro, however it is distinguished by unique
reproductive characters. Here we describe, illustrate and
present images of D. s eccoi, including a distribution map,
preliminary assessments of the conservation status,
identication key and table with main diagnostic characters
of the most similar species of Dioscoreifoliae section.
Material and methods
e specimens were collected during eld expeditions in
2017 and 2020 in an enclave of Seasonal Semideciduous Forest,
which composes the Parque Estadual Cachoeira da Fumaça. e
specimens of the new species were studied in the eld and in
CAP, MBML and PEUFR herbaria (acronyms according to iers
2023 [continuously updated]). Specimens were analyzed and
photographed with a stereomicroscope (ZEISS Stemi 305). e
morphological descriptions followed Webster and Armbruster
(1991) and Beentje (2010) terminology. e distribution map
was generated in QGis v. 2.18.2 (QGIS Development Team
2017). e preliminary conservation status was assessed
according to the IUCN guidelines and criteria (IUCN 2022).
e online geospatial conservation assessment tool (GeoCat)
was used to calculate the area of occupancy (AOO), with a
user-dened cell of 4 km² (Bachman et al. 2011).
Results
Taxonomic treatment
Dalechampia seccoi J.C.R. Mendes & Pereira-Silva, sp. nov.
Type: BRAZIL, Espírito Santo: Alegre, Parque Estadual
Cachoeira da Fumaça, 20°37'54"S, 41°36'13"W, 660 m,
01 Aug 2017, , fr, F. Torres-Leite, C.T. Leite, A.T. Vieira
& P.M. Amaral 560 (holotype: CAP [CAP00007335!]).
(Figs 1, 2 and 3; Table 1)
Dalechampia seccoi is recognized by its involucral bracts
4−5-lobed, pinkish, with magenta veins; staminate column
elongated beyond the sepal tips after anthesis; staminate
sepals widely lanceolate, vinaceous; style tips not moderately
down-curved and stigma crateriform to slightly lobed,
yellow; pistillate sepals 12, pinnatid; 4 bracteoles of
staminate pleiochasium, deltoid to oblong, free; resiniferous
gland with margin mbriate, and resin secreted darkish;
and seeds grayish with macules brownish.
Table 1. Comparison of morphological characters for Dalechampia seccoi and related species.
Character D. seccoi D. alata D. erythrostyla D. pentaphylla D. purpurata D. violacea
Leaves simple, deeply
5-lobed
simple, deeply
5-lobed
simple, deeply
5-lobed compound, 5-foliolate compound,
3-foliolate
simple, deeply
5-lobed
Shape involucral
bracts 4−5-lobed 3-lobed 3-lobed 5 (‒3)-deeply lobed 3-lobed deeply 3-lobed
Color of involucral
bract pinkish greenish greenish greenish magenta pinkish
Color veins of
involucral bracts magenta greenish greenish greenish reddish greenish to pinkish
Shape of bracteal
stipules lanceolate lanceolate lanceolate deltoid lanceolate ovate
color of staminate
sepals vinaceous greenish pinkish greenish dark purple not seen
Openness of
staminate sepals widely open not seen widely open slightly open widely open not seen
Color of resin darkish not seen dark green yellowish darkish not seen
Color of stigma yellow greenish reddish greenish greenish reddish
Seeds oblong, rugose not seen subglobose, rugose globose, smooth angled not seen
Geographic
distribution Southeastern Northeast,
Southeastern Northeast
Paraguay and Brazil
(Central-West, Northeast,
Southeastern and South)
Northeast Central-West
Dalechampia seccoi (Euphorbiaceae), a threatened new species from Southeastern Brazil
Template: Editora Letra1 | www.editoraletra1.com.br
3
Acta Botanica Brasilica
, 2023, 37: e20230027
Figure 1. Dalechampia seccoi. A. Habit. B. General view of habit with pseudanthium. CD. Pseudanthium with the two involucral
bracts 4−5-lobed, showy, pinkish. E. Detail of staminate pleiochasium, and resin secreted darkish. F. Detail of pistillate cymule, and
stigma crateriform to slightly lobed. G. Fruits (capsule). (Photographs: A, B, C, E, F. André S. Pellanda; D. Filipe Leite; G. Karla Pedra).
Template: Editora Letra1 | www.editoraletra1.com.br
Jone Clebson Ribeiro Mendes, Josimar Külkamp, Narcísio Costa Bigio, Filipe Torres-Leite and Rafaela Alves Pereira-Silva
4
Acta Botanica Brasilica
, 2023, 37: e20230027
Twining vines, stems 3−4 mm diam, terete, greenish,
glabrescent to glabrous. Leaves simple, alternate; petiole
4−6 cm long, greenish; petiolar stipule 2−3 × 1−2 cm,
lanceolate, base truncate, margin entire, ciliate, glabrescent;
leaf blade 6.5−13.5 × 6−13 cm, deeply 5-lobed; lobe 6.5−13
× 1−2 cm, elliptic, base acute, apex acute, margin entire,
without glandular trichomes, adaxial and abaxial surfaces
glabrous; venation eucamptodromous, primary veins
4−5; stipels 1‒1.5 × ca. 0.3 mm long, linear to lanceolate,
persistent, associated with glands. Inorescence bisexual
pseudanthium, axillary, solitary, ca. 10 cm long, peduncle
ca. 11 cm long, glabrous; involucral bracts ca. 5.5 × 3 cm,
4‒5-lobed, lobe acute at apex, pinkish, margin serreate,
membranaceous, adaxial and abaxial surfaces glabrescent,
Figure 2. A. Dalechampia seccoi in watercolor painting (Made by Cássia Dias).
Dalechampia seccoi (Euphorbiaceae), a threatened new species from Southeastern Brazil
Template: Editora Letra1 | www.editoraletra1.com.br
5
Acta Botanica Brasilica
, 2023, 37: e20230027
Figure 3. Dalechampia seccoi. A. Habit. B. Detail of the insertion of the base of the leaf blade. C. Detail of the bracteal stipule.
D. Pseudanthium. E. Staminate ower. F. Pistillate ower (pinnatid sepals and stigma crateriform to slightly lobed). G. Fruit.
H. Seed. (Voucher: F. Torres-Leite et al. 560 [holotype]). Drawn by Felipe Martins.
Template: Editora Letra1 | www.editoraletra1.com.br
Jone Clebson Ribeiro Mendes, Josimar Külkamp, Narcísio Costa Bigio, Filipe Torres-Leite and Rafaela Alves Pereira-Silva
6
Acta Botanica Brasilica
, 2023, 37: e20230027
primary veins 5, magenta; bracteal stipule ca. 7 × 5 mm,
lanceolate, base truncate, apex acute, margin entire,
without glandular trichomes, adaxial and abaxial surface
glabrous. Staminate pleiochasium with 4 bracteoles, ca.
5-owered, peduncle ca. 3 mm long; staminate bracteoles
7−8 × 7−8 mm, deltoid to oblong, free; gland composed
of numerous resiniferous bractlets, ca. 8 × 7 mm, margin
mbriate, isolated beside the staminate owers; resin
secreted darkish, over all the resiniferous bractlets.
Staminate owers ca. 6 mm long; sepals 6, ca. 2 × 1 mm,
widely lanceolate, vinaceous; staminate column elongated
beyond the sepal tips after anthesis; stamens more than
30; bithecate anthers. Pistillate cymule 3-owered, sub-
sessile, glabrous; pistillate bracteoles 1−3, 2–3 × 2.5–4
mm, widely ovate to very widely ovate, margin irregular
to ciliate, without glandular trichomes. Pistillate owers
0.7−1.1 cm long, pedicel sub-sessile; sepals 12, free, 5–7
× ca. 1 mm, pinnatid, pubescent to villous, margin with
eglandular trichomes, sparse; ovary ca. 0.5 × 0.5 mm,
trilocular, glabrous; stylar column 0.7−1.2 × ca. 0.1 cm,
greenish; style tips not moderately down-curved, stigma
crateriform to slightly lobed, yellow. Capsule ca. 1 × 1.3−1.5
cm, dark brown, glabrous, sepal in fruit 1−1.2 × ca. 0.05
cm, columella ca. 0.5 cm long. Seeds ca. 5 × 5 mm, oblong,
rugose, grayish, macules brownish.
Distribution ‒ Dalechampia seccoi is recorded until
this moment to the municipality of Alegre, Espírito Santo,
Southeast Brazil, specically in the Parque Estadual da
Cachoeira da Fumaça (PECF), see Figure 4.
Habitat and ecology ‒ The species occurs in
Semideciduous Seasonal Forest vegetation, growing in edge
areas in hillside forests with altitudes ranging from 663 to
700 m (Fig. 4). According to Borges and Azevedo (2017)
the PECF is compose by several phytophysiognomies, such
as rocky vegetation, herbaceous swamp, fragments in the
initial, medium and advanced stage of regeneration, exotic
vegetation and agriculture areas. In addition, the presence of
several exotic species, with high invasive potential, present
threats to the conservation of native species of the PECF
vegetation that has environments in regeneration.
Due to the vegetational similarity, we believe that the
species also occur in other isolated forest areas along the
Caparaó region. New expeditions should be conducted to
better explore the region in search of new records, mainly in
the Reserva Particular do Patrimônio Natural da Cachoeira
da Fumaça in the municipality of Ibitirama, located close
to the area where the species occurs.
Phenology ‒ Dalechampia seccoi was collected with
owers in August and November and with fruits in August.
Etymology ‒ e specic epithet honors Dr. Ricardo de
S. Secco, renowned botanist at the Museu Paraense Emílio
Goeldi, who contributes signicantly to knowledge of the
Amazonian ora, as well as of the whole of Brazil, specically
the Euphorbiaceae family, and who greatly assists in the
formation of stimulating human resources Euphorbiologists.
IUCN preliminary conservation assessment ‒
Dalechampia seccoi is known for only two records in the
same locality, with an area of occupancy (AOO) of 4 km² in
which habitat fragmentation is the main threat observed.
e fragmentation indicates a decline in habitat quality and
a decline in extent of occurrence and area of occupation. e
unique known populations are protected by the PECF, which
is a conservation unit, but not fully protected because tourist
activities are allowed. Based on the geographic criteria B1ab
(i,ii,iii) and knowing the threats, we propose that if a formal
assessment were performed D. s eccoi would probably be
evaluated as Critically Endangered (CR).
Additional material examined (paratype). BRAZIL.
Espírito Santo: Alegre, 20°37'25"S, 41°36'21"W, 663 m,
21 Nov 2020, , J.C.R. Mendes et al. 790 (MBML, PEUFR).
Key to Dalechampia seccoi and morphologically similar species
1. Involucral bracts pinkish to magenta ............................................................................................................................... 2
1'. Involucral bracts greenish ................................................................................................................................................ 4
2. Leaves compound (3-foliolate); pistillate sepals pinkish ........................................................................... D. purpurata
2'. Leaves simple (deeply 5-lobed); pistillate sepals light green ......................................................................................... 3
3. Involucral bracts 4−5-lobed; stigma yellow; restricted geographic distribution to Southeastern ................... D. seccoi
3'. Involucral bracts deeply 3-lobed; stigma reddish; restricted geographic distribution to Central-West ..... D. violacea
4. Leaves compound (5-foliolate); involucral bracts 3-5 lobed; bracteal stipule deltoid; pistillate sepals 6, entire ............
..................................................................................................................................................................... D. pentaphylla
4'. Leaves simple (deeply 5-lobed); involucral bracts exclusively 3-lobed; bracteal stipule lanceolate; pistillate sepals 12,
pinnatid or laciniate ....................................................................................................................................................... 5
5. Staminate sepals greenish; stigma clavate, greenish in the upper half of the stylar column after pollination .... D. alata
5'. Staminate sepals pinkish; stigma slightly lobate, reddish in the upper half of the stylar column after pollination .....
................................................................................................................................................................... D. erythrostyla
Dalechampia seccoi (Euphorbiaceae), a threatened new species from Southeastern Brazil
Template: Editora Letra1 | www.editoraletra1.com.br
7
Acta Botanica Brasilica
, 2023, 37: e20230027
Figure 4. Distribution map of Dalechampia seccoi, represented by red triangle in Espírito Santo state (Brazil).
Taxonomic notes for D. seccoi and related species:
a morphological inference
Currently, the section Dioscoreifoliae comprises 26
species (Webster & Armbruster 1991; Athiê-Souza et
al. 2019), which present morphological variation in the
leaves being simple (unlobed and palmately lobed) and
compound. However, the three types rarely coexist in the
same species, as occurs in Dalechampia sect. Dalechampia
and Dalechampia sect. Tiliifoliae G.L. Webster & Armbr.
(Webster & Armbruster, 1991). In addition, the section
Dioscoreifoliae presents involucral bracts diverse in
Template: Editora Letra1 | www.editoraletra1.com.br
Jone Clebson Ribeiro Mendes, Josimar Külkamp, Narcísio Costa Bigio, Filipe Torres-Leite and Rafaela Alves Pereira-Silva
8
Acta Botanica Brasilica
, 2023, 37: e20230027
color, but the most are pinkish, magenta or purplish, as
D. aristolochiifolia Kunth, D. colo rata (Pereira-Silva et al.
2018), D. cujabensis Müll.Arg., D. dioscoreifolia Poepp.
(Mendes et al. 2020), D. erythrostyla, D. magnoliifolia Müll.
Arg., D. purpurata, and D. violacea, for example.
e section Dioscoreifoliae is subdivided into ve informal
groups, named 1 to 5 that are dierentiated by the shape of
leaves and number of pistillate sepals (6−12, entire, bid,
laciniate or pinnatid), as well as the shape of stylar column
apex, including the texture of seeds (Webster & Armbruster
1991). We analyzed the ve informal groups, and based in
morphological data, here D. s eccoi is included in the group
4, mainly due the number and shape of pistillate sepals (12,
pinnatid) and stylar column apically dilated.
Dalechampia seccoi was mentioned as possible new
species in Mendes et al. (2022) can be confused with
D. alata, D. erythrostyla, D. pentaphylla, D. purpurata and
D. violacea by the involucral bracts pink, magenta or
purplish (Table 1 and Figure 5A–F). Dalechampia seccoi,
D. alata and D. erythrostyla are similar by the leaf blades
deeply 5-lobed but can be distinguished by the involucral
bracts 4−5-lobed, pinkish (Fig. 5A), staminate sepals
vinaceous and stigma yellow [vs. involucral bracts 3-lobed,
green in D. alata and D. erythrostyla, staminate sepals and
stigma green in D. alata (Fig. 5B) and staminate sepals
pinkish and stigma green and becoming reddish in the
upper half in D. erythrostyla after pollination (Fig. 5C)]
(see Pereira-Silva et al. 2016).
Although Dalechampia pentaphylla, D. purpurata and
D. violacea compound present leaves (3–5-foliolate) they
also can be confused with D. seccoi (leaves deeply 5-lobed).
erefore, the new species can be dierentiated from
Figure 5. Involucral bracts of congeneric species with deeply 5-lobed or 3-5-foliolate leaves belonging to the Dioscoreifoliae section.
A. Dalechampia seccoi. B. Dalechampia alata. C. Dalechampia erythrostyla. D. Dalechampia pentaphylla. E. Dalechampia purpurata.
F. Dalechampia violacea. (Photographs: A. Filipe Leite; B. João Zorzanelli; C‒F. Rafaela Pereira-Silva; D. Felipe Amorim; E. Eduardo Saar).
Dalechampia seccoi (Euphorbiaceae), a threatened new species from Southeastern Brazil
Template: Editora Letra1 | www.editoraletra1.com.br
9
Acta Botanica Brasilica
, 2023, 37: e20230027
D. pentaphylla (Fig. 5D) by having involucral bracts
4−5-lobed, pinkish and 12 pistillate sepals pinnatid
(vs. involucral bracts 5 (−3)-deeply lobed, greenish and
6 pistillate sepals entire, respectively). e colors of the
involucral bracts of D. purpurata (Fig. 5E) and D. violacea
(Fig. 5F) are similar to D. seccoi that diers of D. purpurata
by having involucral bracts 4−5-lobed, pinkish, staminate
sepals vinaceous and stigma yellow (vs. involucral bracts
3-lobed, magenta, staminate sepals dark purple and stigma
greenish, respectively).
Dalechampia violacea differs of the new species by
presenting involucral bracts deeply 3-lobed, pistillate
sepals fimbriate, stylar column and stigma reddish.
The pistillate sepals of D. violacea have an irregularly
dentate apex and never lobed, which we treat here as
fimbriate. Even so, worth mentioning that stigmatic
surface of Dalechampia can be useful to differentiate
some species according to Webster & Armbruster (1991),
in some representatives, the style column is notable
for having longitudinal bands of stigmatic surfaces
running halfway or more towards the base. In the case of
D. erythrostyla (Pereira-Silva et al. 2016) and D. violacea
(Mendes et al. 2020) these stigmatic surfaces run up to
the middle of the stylar column and become reddish.
While in other species of the section, as in D. seccoi,
the longitudinal bands of the stigmatic surfaces can
be shorter and yellow in color.
Another important aspect among the species correlated
to D. se cc oi is the geog raphic distribution, where D. pentaphylla
has a wide distribution in Brazil (Central-West, Northeast,
Southeastern and South), reaching Paraguay and D. alata
occurs in Northeast and Southeastern of Brazil (Webster
& Armbruster 1991; Mendes et al. 2022). Dalechampia
seccoi, D. erythrostyla, D. purpurata and D. violacea present
a restrict geographical distribution in the country, being
D. s eccoi in the Southeastern region, while D. erythrostyla
and D. purpurata are listed to the Northeast, and D. violacea
to the Central-West.
Acknowledgements
We thank Professor Dra. Karla Maria Pedra from Instituto
Federal do Espírito Santo for valuable information about
the plant in the eld. e authors are also grateful to the
excellent illustrator Cássia Dias Atelier Herbolarium for
providing the watercolor drawing; and Felipe Martins, for
the ink illustration.
References
Athiê-Souza SM, Pereira-Silva RA, Sales MF, Armbruster WS. 2019.
Nomenclatural update of Dalechampia sect. Dioscoreifoliae
(Euphorbiaceae). Kew Bulletin 74: 1–3. doi: 10.1007/s12225-019-9820-7
Bachman S, Moat J, Hill AW, de la Torre J, Scott B. 2011. Supporting Red List
threat assessments with GeoCAT: Geospatial conservation assessment
tool. ZooKeys 150: 117–126. doi: 10.3897/zookeys.150.2109.
Beentje HJ. 2010. e Kew Plant Glossary – an illustrated dictionary of
plant terms. Royal Botanic Gardens, Kew.
Borges KF, Azevedo MAM. 2017. Inventário orístico de um remanescente
de Floresta Estacional Semidecidual no Sul do Espírito Santo, Brasil:
Parque Estadual Cachoeira da Fumaça. Rodriguésia 68: 1963–1976.
doi: 10.1590/2175-7860201768527.
IUCN Standards and Petitions Committee. 2022. Guidelines for Using the
IUCN Red List Categories and Criteria. Version 15.1. https://www.
iucnredlist.org/documents/RedListGuidelines.pdf. 11 Jan. 2023.
Mendes JCR, Pereira-Silva RA, Athiê-Souza SM, Bigio NC, Armbruster
WS, Secco RS, Sales MF. 2020. e genus Dalechampia L. from Brazil.
1–3. https://fieldguides.fieldmuseum.org/guides/guide/1122.
26 Dec. 2022.
Mendes JCR, Rosário AS, Bigio NC, Pereira-Silva RA, Secco RS. 2021.
Dalechampia L. (Euphorbiaceae) na Amazônia Brasileira. Biota
Neotropica 21: e20201010. doi: 10.1590/1676-0611-BN-2020-1010.
Mendes JC, Bigio NC, Külkamp J, Pereira-Silva RA. 2022. Synoptic
treatment of Dalechampia (Euphorbiaceae) from Espírito Santo,
Brazil: distribution, morphology, illustration and new occurrences.
Rodriguésia 73: e00412021. doi: 10.1590/2175-7860202273028.
Pereira-Silva RA, Mendes JCR, Athiê-S ouza SM, Melo AL, Sales MF, Souza
LGR, Armbruster WS (unpubl. res.) Taxonomic revision of Neotropical
species of Dalechampia sect. Dalechampia (Euphorbiaceae).
Pereira-Silva RA, Athiê-Souza SM, Melo AL , Sales MF. 2016. Dalechampia
erythrostyla (Euphorbiaceae), a new species from Northeastern Brazil.
Systematic Botany 41: 989–995. doi: 10.1600/036364416X694116.
Pereira-Silva RA, Athiê-Souza SM, Armbr uster WS, Melo AL, Sales MF. 2018.
Typication and reestablishment of the Linnaean name Dalechampia
colorata (Euphorbiaceae). Taxon 67: 186–190. doi: 10.12705/671.12.
Pereira-Silva RA, Athiê-Souza SM, Armbruster WS, Melo AL. 2019.
Dalechampia margarethiae (Euphorbiaceae), a new species from
Southeastern Brazil. Systematic Botany 44: 832–837. doi: 10.1600/
036364419X15710776741350.
Pereira-Silva RA, Gama BR, Athiê-Souza SM, Melo AL, Sales MF. 2020.
Dalechampia (Euphorbiaceae, Acalyphoideae): synopsis of species from
Northeast Brazil. Biota Neotropica 20: e20190805. doi: 10.1590/1676-
0611-BN-2019-0805.
Pereira-Silva RA, Oliveira JCP, Mendes JCR et al. 2022. Dalechampia in
Flora e Funga do Brasil. Reora. https://oradobrasil.jbrj.gov.br/
FB17549. 09 Nov. 2022.
QGIS Development Team. 2017. QGIS Geographic Information System.
V 2.18.2. Open Source Geospatial Foundation. http://qgis.osgeo.org.
09 Nov. 2022.
iers B. 2023 [onwards]. Index Herbariorum. A global directory of public
herbaria and associated sta. New York Botanical Garden’s Virtual
Herbarium. New York Botanical Garden. http://sweetgum.nybg.org/
science/ih. 25 Sep. 2022.
Webster GL, Armbruster WS. 1991. A synopsis of the neotropical species
of Dalechampia (Euphorbiaceae). Botanical Journal of the Linnean
Society 105: 137–177. doi: 10.1111/j.1095-8339.1991.tb00202.x .
ResearchGate has not been able to resolve any citations for this publication.
Article
Full-text available
Euphorbiaceae is one of the largest and more complex families of angiosperms with 6,745 species and 218 genera. Dalechampia comprises approximately 130 species, with pantropical distribution, the genus presents pseudantial inflorescence with bilateral symmetry, and this characteristic differs from the others taxons in the family. Were registered 15 Dalechampia species for Espiríto Santo, of which D. margarethiae until then, it was endemic of state recording here a new occurrence for the state of Minas Gerais. Dalechampia leandrii, D. micromeria, and D. stipulacea constitute new records for the state. After expeditions in the field to observe and collect samples, bibliographic revision, and examination of herbarium specimens, we present a synopsis of Dalechampia from Espirito Santo state, in which we provide morphological illustration, an identification key, distribution maps, and comments about each taxon.
Article
Full-text available
A synopsis of the Dalechampia from Northeastern Brazil is presented here, with discussions of their diagnostic features. The study was based on the analysis of herbarium material (including historical collections and types), specimens collected in the field, and bibliographic documentation. Twenty-eight species distributed among five sections were recognized, 19 of them endemic to Brazil. Most of the species are found in Caatinga and Atlantic Forest vegetation. A key for species identifications is provided, together with illustrations, and information on their geographic distributions and conservation statuses.
Article
Full-text available
A synopsis of the Dalechampia from Northeastern Brazil is presented here, with discussions of their diagnostic features. The study was based on the analysis of herbarium material (including historical collections and types), specimens collected in the field, and bibliographic documentation. Twenty-eight species distributed among five sections were recognized, 19 of them endemic to Brazil. Most of the species are found in Caatinga and Atlantic Forest vegetation. A key for species identifications is provided, together with illustrations, and information on their geographic distributions and conservation statuses.
Article
Full-text available
Resumo Um inventário florístico de espécies de angiospermas provenientes do Parque Estadual Cachoeira da Fumaça (PECF), Espírito Santo, Brasil é apresentado. O PECF está localizado na divisa dos municípios de Alegre e Ibitirama, situado na região do Caparaó, sul do Espírito Santo, protegendo nascentes e remanescentes de um trecho conservado do rio Braço Norte Direito. Objetivou-se com este trabalho ampliar o conhecimento da diversidade de angiospermas de um remanescente de Floresta Atlântica localizado no Sul do Espírito Santo, por meio do levantamento em campo das espécies herbáceas, trepadeiras, arbustivas e arbóreas ocorrentes no PECF. As coletas foram realizadas mensalmente durante janeiro de 2010 a janeiro de 2011 e as amostras botânicas foram depositadas no herbário VIES (subcuradoria Alegre). Os resultados estão apresentados em forma de lista com um total de 222 espécies distribuídas em 171 gêneros e 60 famílias, deste total, 30 espécies são endêmicas do Brasil, quatro estão na lista vermelha de espécies ameaçadas, e 13 são citadas como novas ocorrências para o Espírito Santo. Fabaceae, Asteraceae, Piperaceae, Rubiaceae, Euphorbiaceae, Poaceae, Melastomataceae e Myrtaceae são as famílias mais ricas em número de espécies. O número de táxons encontrados no PECF reafirma que pequenos remanescentes florestais apresentam elevada diversidade de espécies.
Article
Full-text available
GeoCAT is an open source, browser based tool that performs rapid geospatial analysis to ease the process of Red Listing taxa. Developed to utilise spatially referenced primary occurrence data, the analysis focuses on two aspects of the geographic range of a taxon: the extent of occurrence (EOO) and the area of occupancy (AOO). These metrics form part of the IUCN Red List categories and criteria and have often proved challenging to obtain in an accurate, consistent and repeatable way. Within a familiar Google Maps environment, GeoCAT users can quickly and easily combine data from multiple sources such as GBIF, Flickr and Scratchpads as well as user generated occurrence data. Analysis is done with the click of a button and is visualised instantly, providing an indication of the Red List threat rating, subject to meeting the full requirements of the criteria. Outputs including the results, data and parameters used for analysis are stored in a GeoCAT file that can be easily reloaded or shared with collaborators. GeoCAT is a first step toward automating the data handling process of Red List assessing and provides a valuable hub from which further developments and enhancements can be spawned.
Article
Abstract—A new species of Dalechampia from southeastern Brazil, belonging to Dalechampia sect. Dioscoreifoliae, is described and illustrated here. Dalechampia margarethiae is a twining vine occurring exclusively in Esp´ırito Santo state. Its pseudanthia are similar to those of D. peckoltiana and D. pentaphylla, but D. margarethiae differs in a set of important characters, including having cylindrical, down-curved style tips, staminate flowers at anthesis having unreflexed sepals with stamens born on unelongated columns, whitish floral resin, and simple, entire, cordate leaves.
Article
For the ongoing revision of Dalechampia sect. Dioscoreifoliae, we proceed with the lectotypification of D. juruana, D. luetzelburgii, D. schottii and D. schottii var. trifoliolata.
Article
Revisionary studies of Dalechampia sect. Dalechampia have revealed the need to lectotypify D. colorata and that it represents a distinct species rather than a synonym of D. tiliifolia. Dalechampia karsteniana is interpreted to be a synonym of D. colorata.
Article
A new species of Dalechampia from Brazil is described and illustrated. Dalechampia erythrostyla is a twining vine and forms relatively dense populations in a disturbed area of the Atlantic Forest, where it has been facing a high risk of extinction. This species is superficially similar to D. alata, D. papillistigma, D. pentaphylla, D. purpurata, and D. violacea, but it differs from them in multiple morphological aspects, including leaf division, size of petiolar stipules and stipels, leaflet shape, number and color of lobes of involucral bracts, number and margin of pistillate sepals, color, size, and shape of stigma.
Article
WEBSTER, G. L. & ARMBRUSTER, W. S., 1991. A synopsis of the neotropical species ofDalechampia (Euphorbiaceae). The characters used in inferring phylogenetic relationship in Dalechampia are discussed, and a consistent terminology is devised for the parts of the distinctive pseudanthial inflorescences. The infrageneric classification is radically modified, with the 92 provisionally accepted binomials for the neotropical taxa referred to six sections: Rhopalostylis, Dioscoreifoliae, Cremophyllum, Coriaceae, Tiliifoliae and Dalechampia. As here interpreted, section Dalechampia includes 53 species in five subsections; one new subsection, Convolvuloides, is described.