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Phytotaxa 620 (3): 235–243
https://www.mapress.com/pt/
Copyright © 2023 Magnolia Press Article PHYTOTAXA
ISSN 1179-3155 (print edition)
ISSN 1179-3163 (online edition)
Accepted by Edlley M. Pessoa: 7 Oct. 2023; published: 17 Oct. 2023
https://doi.org/10.11646/phytotaxa.620.3.4
235
Octomeria giordanii (Orchidaceae—Pleurothallidinae), a new species from Brazil
and nomenclatural notes on João Barbosa Rodrigues’s species that occurs in
Bahia and Minas Gerais
THIAGO FARIA DOS SANTOS1,2,4* & EULER DA LUZ FERNANDES MENEZES3,5
1 Programa de Pós-Graduação em Ciências Biológicas (Biologia Vegetal), Instituto de Biociências de Rio Claro, Departamento de
Botânica, Universidade Estadual Paulista - UNESP, Av. 24 A 1515, Bela Vista, 13506-900, Caixa Postal 199, Rio Claro, São Paulo,
Brazil
2 Universidade Federal do Paraná, Setor de Ciências Biológicas, Centro Politécnico, Jardim das Américas, Curitiba - PR, 81531-980.
Caixa Postal: 19031, Brazil
3 Universidade Federal dos Vales do Jequitinhonha e Mucuri, Departamento de Ciências Florestais, Rodovia MGT 367 - Km 583, nº
5.000, Alto da Jacuba, 39100-000, Diamantina, MG, Brazil
4
�
thiaguerafaria@gmail.com; https://orcid.org/0000-0002-0707-6345
5
�
eulermenezes@hotmail.com; https://orcid.org/0000-0002-1861-9552
*Author for correspondence
Abstract
Octomeria giordanii is proposed as a new species occurring in an ecotone between the Atlantic Rainforest and Cerrado
biomes in Minas Gerais, Brazil. This study provides a detailed description, illustrations, and a comparative analysis using an
identification key to distinguish it from other Octomeria species. The new species is characterized by its small size, rupicolous
reptant growth habit, and flowers with multiple colors. It shares similarities with O. fusiformis and other Octomeria species
but can be differentiated by its floral morphology and ecology. The nomenclatural notes include the lectotypification of nine
taxa described by João Barbosa Rodrigues that can be found occurring in the states of Bahia and Minas Gerais. Additionally,
O. albiflora is proposed as a new synonym of O. lithophila.
Key words: Atlantic Rainforest, Cerrado, Lectotypification, Orchid
Introduction
Octomeria Brown (1813: 211) contains about 150 species traditionally characterized by fasciculate inflorescences and
flowers with eight pollinia (Luer 1986, Pridgeon et al. 2009). The genus is historically classified into two sections
according to the type of the leaves (Cogniaux 1896, Luer 1986): I. Octomeria sect. Octomeria, which includes
taxa with flat to conduplicate leaves; and II. Octomeria sect. Teretifoliae, which includes plants with cylindrical to
semi-cylindrical leaves. Phylogenetic studies in Pleurothallidinae (Karremans 2016) have shown Octomeria as one
of the earliest divergent lineages, together with Sansonia Chiron (2012: 80), Atopoglossum Luer (2004: 255) and
Brachionidium Lindley (1859: 8). Luer (2010) separated Octomeria into two informal groups based on geographical
distribution groups: 1. the ‘’Northern’’, with 57 species in Central America, Andes, West and North Amazon; 2. and the
‘’Southern’’ group, with 100 species distributed in Argentina, Paraguay, Uruguay, North, East, and South of Brazil.
Forster (2007) despite having reviewed various species from the Atlantic Rainforest, Cerrado and Amazon
biomes, and the information is useful for understanding their characteristics, it didn’t publish the data in accordance
with the botanical code (Turland et al. 2018). Therefore, its revised taxa cannot be interpreted as solved, leaving most
of the Brazilian species in need of taxonomic revision. In the south of Brazil, Santos et. al (2020) studied 21 taxa for
the Atlantic Forest of Paraná state, even so, it is not half of the 95 species distributed throughout all national biomes,
as raised by the ‘’Brazil Flora Group 2020’’ (2022), number that tends to grow since new species and new records
of the genus are being described recently for Brazil (Santos et al. 2022, Krahl et al. 2022) and more will probably
continuously appear.
SANTOS & MENEZES
236 • Phytotaxa 620 (3) © 2023 Magnolia Press
During field expeditions in the Minas Gerais state, municipality of Felício dos Santos located in the Gavião
mountain range, inside a remotely explored ecotone between the Cerrado and Atlantic Rainforest biomes, a new
species of Octomeria was discovered. Therefore, it is described here with illustrations, photographic plate, ecological
insights and identification key comparing it to similar species. Additionally, we propose the lectotypification of nine
taxa described by Barbosa Rodrigues (1877, 1882, 1937) from Bahia and/or Minas Gerais. Lastly, O. albiflora Hoehne
& Schlchter (1926: 230) is presented here as a new synonym of O. lithophila (Barbosa Rodrigues 1877: 26) Barbosa
Rodrigues (1882: 295).
Materials and methods
To avoid predatory collection of specimens from the environment, we didn’t offer geographical coordinates to where
the plant was discovered. Observable morphological characters were studied in the material collected by E.L.F.
Menezes & S.C.O. Giordani 848 (HDJF 10055) and cultivated by E.L.F. Menezes in a private greenhouse. The plant
was photographed, the flowers dissected and parts measured with a binocular stereomicroscope (80x) available at the
Departamento de Ciências Florestais at the Universidade Federal dos Vales do Jequitinhonha e Mucuri. The botanical
material was deposited at HDJF (acronym according to Thiers 2023). Illustrations and a plate were prepared, following
the format of the “Lankester Composite Dissection Plate (LCDP)” (Vieira-Uribe & Karremans 2017). The discussion
of the new species is enriched with photographs of specimens in their natural habitat, as well as pictures of O. fusiformis
Luer & Toscano (2010: 144) for comparison and to construct the identification key, we analyzed the descriptions,
illustrations, and herbarium material of the taxa. Species with uncertain determination of vouchers for the states of
Bahia or Minas Gerais were not considered for the identification key or nomenclatural notes. For compiling Barbosa
Rodrigues’ nomenclatural notes, we examined his original illustrations.
Taxonomy
Octomeria giordanii T.F. Santos & E.L.F.Menezes, sp. nov. (Figures 1–2).
Type:—BRAZIL. Minas Gerais: Felício dos Santos, Serra do Gavião, 11 September 2020, rupicolous in the ground near waterfall,
11.IX.2020, E.L.F.Menezes & S.C.O. Giordani 848 (holotype: HDJF 10055!).
O. giordanii is most similar to O. fusiformis but differs by one or rarely two flowers opening successively (vs. congested inflorescence with
one to multiple simultaneous flowers blooming). Additionally, O. giordanii petals are oblong (vs. elliptical to ovate ).
Description:—Plant 20.0–77.0 mm long, rupicolous, caespitose. Rhizome inconspicuous. Roots 10.0–22.0 mm,
cylindrical, flexuous. Ramicauls 1.0–50.0 mm long, erect, cylindrical, thicker at the apex, 3 internodes covered by
pale, amplexicaul, glabrous, ephemeral sheaths. Leaves 15.0–65.0 × 5.0–10.4 mm, subcylindrical, succulent, erect,
several longitudinally grooves present, base cuneate, apex acute to acuminate. Inflorescence 1–2 flowers in fascicle;
inconspicuous floral bracts; flowers pedicelled; pedicel 1.0–1.1 mm long., semi-curved; ovary 0.5 mm long. Sepals
whitish to yellowish, pink stained at the apex, glabrous, free, 3 dark rose veins; the dorsal sepal 3.0–4.0 × 1.0–2.2
mm, elliptic-lanceolate, apex obtuse to slightly acute; the lateral sepals 3.1–4.2 × 1.1–2.2 mm, oblong-lanceolate to
elliptic-lanceolate, apex obtuse to slightly acute. Petals whitish to yellowish, pink stained at the apex, glabrous, 3 dark
rose veins, 3.0–4.2 × 1.3–2.5 mm, oblong to oblong-lanceolate, apex slightly acute. Lip 1.8–3.2 × 1.2–2.4 mm, yellow,
dark rose stained, glabrous, trilobed, margin entire, base truncate, concave between a pair of longitudinal parallel calli,
which extend from the base of the lateral lobes to more than half of the lip; lateral lobes rounded, margin entire; median
lobe oblong to sub-rhombic, apex truncate. Column 1.8–2.0 × 1.0–1.2 mm, yellow, rose stained, erect to slightly
arched, cylindrical, wings rounded, rostellum present, eight pollinia.
Distribution and ecology:—Octomeria giordanii has only been found with rupicolous habit and exposed to the
sun in the ground rocks next to a waterfall (Figure 3A–C) in a low elevation area (ca. 730m) in Felício dos Santos
municipality of the Minas Gerais state, region inside an ecotone between the Cerrado and the Atlantic Rainforest
Biomes in the Serra do Espinhaço.
Etymology:—the name of the species is an honor to one of its discoverers, Samuel Cunha Oliveira Giordani.
A NEW SPECIES & NOTES IN OCTOMERIA FROM BRAZIL Phytotaxa 620 (3) © 2023 Magnolia Press • 237
FIGURE 1. “Lankester Composite Dissection Plate (LCDP)” of O. giordanii. A. Habit. B. Lateral view of the leaf. C. Front view of the
flower. D. Lateral view of the flower. E. Lateral view of the lip attached to the column. F. Perianth dissected; frontal view of the flower.
(Based on the holotype, and cultivated specimens).
SANTOS & MENEZES
238 • Phytotaxa 620 (3) © 2023 Magnolia Press
FIGURE 2. Octomeria giordanii A. Habit. B. Lateral view of the flower. C. Dorsal sepal. D. Petal. E. Lateral sepal. F. Lip. G. Lateral
view of the lip attached to the column. (Illustration by L.K.R. Hinoshita based on the holotype, and cultivated specimens).
A NEW SPECIES & NOTES IN OCTOMERIA FROM BRAZIL Phytotaxa 620 (3) © 2023 Magnolia Press • 239
Conservation status:—Due to being found only in one place, the species does not have enough information to
propose an appropriate conservation status, therefore, we indicate that it should be treated as (DD) category (IUCN
2022).
Taxonomic Discussion:—O. giordanii is most similar to O. fusiformis. However, they can be differentiated (Figure
3, 4). Octomeria giordanii typically has one or rarely two flowers opening successively, whereas O. fusiformis exhibits
a congested inflorescence with one to three flowers simultaneously blooming. Additionally, there are differences in the
flower morphology. The floral parts of O. giordanii are smaller, measuring approximately 4.0 × 2.5 mm each, while
those of O. fusiformis can reach 8.0 × 3.0 mm each. Moreover, the petals of O. giordanii are oblong, whereas those
of O. fusiformis are elliptical to ovate in shape. In terms of flower coloration, O. giordanii features pink-stained sepal
veins, and the lip displays yellow coloration in the lateral lobes and margin, but is entirely reddish in the inner portion.
In contrast, O. fusiformis exhibits stronger red staining in the sepal veins, and the lip is yellow or white, sometimes
with a purple spot in the inner portion or apex.
FIGURE 3. Octomeria giordanii on its natural environment. A. Rock formations exposed to the sun near a waterfall. B. Plant in the
environment; highlighting the flower. C. Plant in the environment; highlighting the rupicolous growth habit. (photographs of O. giordanii
by E.L.F. Menezes).
FIGURE 4. Octomeria fusiformis, photographs and ilustration. A. Flower lateral view; ovate petals observable. B. Flower frontal view;
highlight the flower’s colors. C. Luer’s ilustration; highlight the inflorescence with three flowers simultaneously blooming. (photographs
of O. fusiformis by A.L.V. Toscano de Brito & Wade L. Collier; and illustration of O. fusiformis modified from Luer (2010).
Regarding the ecology of these two taxa, O. giordanii occurs in the Serra do Espinhaço, while O. fusiformis is found
in the Chapada Diamantina. Both species are rupicolous, growing exposed to sunlight, and they occur in connected
mountain ranges, being part of the Espinhaço mountain range complex. However, there are notable differences in their
distribution patterns. O. giordanii is known from a single location in the state of Minas Gerais, at a lower altitude of
around 730 meters, in close proximity to a waterfall and far from the mountain summits. Differently, O. fusiformis is
exclusively found in the state of Bahia at higher elevations, specifically on the peaks of mountains in the Serra das
Almas and Serra do Barbado, at approximately 1900 meters above sea level.
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240 • Phytotaxa 620 (3) © 2023 Magnolia Press
Additionally, O. giordanii has similarities in terms of morphology with the following Octomeria species from
Minas Gerais and Bahia: O. alexandri Schlechter (1922: 53); O. aloefolia Barbosa Rodrigues (1882: 113); O. campos-
portoi Schlechter (1922: 291); O. decumbens Cogniaux (1896: 642); O. flabellifera Pabst (1975: 56); O. fusiformis
Luer & Toscano (2010: 144); O. geraensis (Barbosa Rodrigues 1877: 26) Barbosa Rodrigues (1882: 295); O.juncifolia
Barbosa Rodrigues (1882: 110); O. leptophylla Barbosa Rodrigues (1882: 112); O. lithophila (Barbosa Rodrigues
1877: 26); O. ochroleuca Barbosa Rodrigues (1877: 31); O. palmyrabellae Barbosa Rodrigues (1937: 38); O. praestans
Barbosa Rodrigues (1882: 112); O. rubrifolia Barbosa Rodrigues (1877: 31); O. wawrae Reichenbach ex Wawra
(1888: 156). These taxa can be distinguished morphologically by the following key.
Identification key to Octomeria giordanii and related species with terete, subterete or conduplicate leaves from
Minas Gerais and Bahia
1. Plants over 45.0 cm long; sheaths of the ramicauls usually thickened ........................................................................... O. juncifolia
- Plants smaller than 45.0 cm long; sheaths of the ramicauls never thickened .....................................................................................2
2. Inflorescence with 1–3 flowers ..........................................................................................................................................................3
- Inflorescence with more than 3 flowers .............................................................................................................................................8
3. Lip entire ............................................................................................................................................................................................4
- Lip trilobate ........................................................................................................................................................................................5
4. Lip flabellate; two longitudinal calluses in the lip .................................................................................................. O. campos-portoi
- Lip broadly flabellate; three longitudinal calluses in the lip .........................................................................................O. flabellifera
5. Leaves conduplicate ...........................................................................................................................................................................6
- Leaves terete or subterete .................................................................................................................................................................11
6. Ramicauls thickened in the apex; apex of sepals and petals rounded to slightly acute ................................................... O. lithophila
- Ramicauls not thickened in the apex; apex of sepals and petals acuminated .....................................................................................7
7. Lateral sepals free ..........................................................................................................................................................O. ochroleuca
- Lateral sepals partially connate .......................................................................................................................................O. rubrifolia
8. Lip narrow oblong, elongated .......................................................................................................................................... O. geraensis
- Lip oblong or elliptic-pandurate, non-elongated ................................................................................................................................9
9. Lip oblong; well-developed lateral lobes; mid lobe narrowed; apex emarginate or truncate ..................................O. palmyrabellae
- Lip oblong or elliptic-pandurate; small to medium size lateral lobes; mid lobe not narrowed; apex rounded ................................10
10. Leaves and ramicauls thick; sheaths of the ramicaul strongly imbricate; sepals and petals oblong to linear ................. O. praestans
- Leaves and ramicauls slender; sheaths of the ramicaul loosely arranged; sepals and petals oblong-lanceolate ...........O. decumbens
11. Lateral sepals completely connate .................................................................................................................................O. leptophylla
- Lateral sepals free .............................................................................................................................................................................12
12. Sepals and petals apex strongly acuminate ......................................................................................................................................13
- Sepals and petals apex obtuse or acute .............................................................................................................................................14
13. Plants smaller than 5.0 cm; leaves with an acuminate apex; margin of the lip slightly fimbriated ..................................O. aloefolia
- Plants larger than 5.0 cm; leaves with a rounded to slightly acute apex; margin of the lip entire ..................................... O. wawrae
14. Leaves and ramicauls slender; petals obovate-lanceolate ............................................................................................... O. alexandri
- Leaves and ramicauls thick; petals other formats .............................................................................................................................15
15. Inflorescence with 1–3 flowers opening simultaneously; floral parts approximately 7.0 mm; petals ovate to elliptical ....................
......................................................................................................................................................................................... O. fusiformis
- Inflorescence with 1 to rarely 2 flowers opening successively; floral parts approximately 4.0 mm; petals oblong to oblong-
lanceolate ..........................................................................................................................................................................O. giordanii
Specimens examined from other species: O. aloefolia—BRAZIL. Bahia: Rio de Cotas, 22.II.2008, C. van Den
Berg 1936 (HUEFS). O. campos-portoi—BRAZIL. Minas Gerais: Santana do Riacho, Serra do Cipó, 10.XII.2006,
J.A.N. Batista 1751 (BHCB). O. decumbens—BRAZIL. Minas Gerais: Catas Altas, Serra do Caraça, 25.V.2001, R.C.
Mota 321 (BHCB). O. flabellifera—BRAZIL. Bahia: Mucugê, Parque Municipal de Mucugê, 30.VI.2011, A.L.V.
Toscano de Brito 2854 (UPCB). O. fusiformis—BRAZIL. Bahia: Catolés, Serra do Barbado, 16.VIII.2008, A.L.V.
Toscano de Brito 1820 (HUEFS). Rio de Contas, Cume do Pico das Almas, 23.VI.2016, A.L.V. Toscano de Brito 3533
(UPCB). Without locality, without date, A.L.V. Toscano de Brito 1396 (HUEFS). O. geraensis—BRAZIL. Minas Gerais:
Serra do Cipó, 12.XI.1959, E.P. Heringer 7280 (UB). O. juncifolia—BRAZIL. Minas Gerais: Conceição do Mato
Dentro, Parque Natural Municipal do Ribeirão do Campo, 07.VII.2004, R.C. Mota 2321 (BHCB). O. leptophylla—
BRAZIL. Minas Gerais: Andradas, Morro do Serrote, 12.X.2008, A. Docha Neto s.n. (CESJ). O. lithophila—BRAZIL.
Minas Gerais: Caldas, Pedra Branca, 01.II.2009, A.R. Barbosa s.n. (BHCB). O. ochroleuca—BRAZIL. Minas Gerais:
Baependi, Parque Estadual da Serra do Papagaio, 15.IV.2015, C. Nardy 47 (CESJ). O. palmyrabellae—BRAZIL.
Minas Gerais: Bocaiúva, Morro do Cruzeiro, 11.VIII.2020, E.L.F. Menezes 278 (HDJF). O. praestans—BRAZIL.
Minas Gerais: Carrancas, Pedreira do Guilherme, S.L. Gontijo s.n. (BHCB). O. rubrifolia—BRAZIL. Minas Gerais:
Lima Duarte, Parque Estadual do Ibitipoca, 19.X.2003, L. Menini Neto 40 (CESJ). O. wawrae—BRAZIL. Minas
Gerais: Rio Preto, Serra Negra, 01.IV.2012, L.Menine Neto 1026 (CESJ).
A NEW SPECIES & NOTES IN OCTOMERIA FROM BRAZIL Phytotaxa 620 (3) © 2023 Magnolia Press • 241
Nomenclatural notes on Barbosa Rodrigues’s taxa
Among the botanists it is widely accepted that the type material of Orchidaceae collected by Barbosa Rodrigues
was destroyed during a flood (Mori & Ferreira 1987, Sprunger et al. 1996). Regardless, he illustrated in color all his
species. Later, Cogniaux (1896) submitted modified inkl-draw copies of a few of those species for publishing it on
Von Martius’s ‘’Flora Brasiliensis’’, but is only more recent that the original illustrations have been reprinted in color
by Sprunger et al. (1996), and ought to be indicated as the lectotypes for Barbosa Rodrigues’ original lost collections.
Therefore, we propose here the lectotypes for O. aloefolia Barbosa Rodrigues (1882: 113), O. concolor Barbosa
Rodrigues (1882: 100), O. juncifolia Barbosa Rodrigues (1882: 110), O. juncifolia var. revoluta Barbosa Rodrigues
(1882: 111), O. lithophila (Barbosa Rodrigues 1877: 26) Barbosa Rodrigues (1882: 295), O. ochroleuca Barbosa
Rodrigues (1877: 31), O. palmyrabellae Barbosa Rodrigues (1937: 38), O. praestans Barbosa Rodrigues (1882: 112)
and O. rubrifolia Barbosa Rodrigues (1877: 31). Among the species of Barbosa Rodrigues treated here, we left out O.
geraensis Barbosa Rodrigues (1882: 295) and O. leptophylla Barbosa Rodrigues (1882: 112) since the lectotype has
already been proposed by Garay (1974) and Menine Neto & Docha Neto (2009) respectively. Additionally, O. albiflora
Hoehne & Schlchter (1926: 230) is proposed here as a new synonym of O. lithophila.
Octomeria aloefolia Barbosa Rodrigues (1882: 113).
Type:—BRAZIL. Rio de Janeiro: Serra de Santa Anna, June, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here:
Barbosa Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 203D,
cited as tab. 667 (then unpublished) in Barbosa Rodrigues (1882), reproduced in Sprunger et al. (1996: 261).
Octomeria concolor Barbosa Rodrigues (1882: 100).
Type:—BRAZIL. Rio de Janeiro: Mendes, January, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here: Barbosa
Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 190B, cited as tab.
616 (then unpublished) in Barbosa Rodrigues (1882), reproduced in Sprunger et al. (1996: 248).
Octomeria juncifolia Barbosa Rodrigues (1882: 110).
Type:—BRAZIL. Minas Gerais: Rodeio, May–June, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here: Barbosa
Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 194A, cited as tab.
535 (then unpublished) in Barbosa Rodrigues (1882), reproduced in Sprunger et al. (1996: 252).
Octomeria juncifolia var. revoluta Barbosa Rodrigues (1882: 111).
Type:—BRAZIL. Rio de Janeiro: Serra de Santa Anna, Bacamichá, June, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated
here: Barbosa Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab.
194B, cited as tab. 666A (then unpublished) in Barbosa Rodrigues (1882), reproduced in Sprunger et al. (1996: 252).
Octomeria lithophila (Barb. Rodr.) Barbosa Rodrigues (1882: 295). Gigliolia lithophila Barbosa Rodrigues (1877: 26).
Type:—BRAZIL. Minas Gerais: Caldas, Pedra Branca, November, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here:
Barbosa Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 193A,
cited as tab. 392 (then unpublished) in Barbosa Rodrigues (1877), reproduced in Sprunger et al. (1996: 251).
= Octomeria albiflora Hoehne & Schlchter (1926: 230). Type:—BRAZIL. Minas Gerais: Caldas, Pedra Branca, 21 January 1919, F.C.
Hoehne s.n. (holotype: SP 002274!). syn. nov.
Taxonomic Note:—In 1919, during expeditions to the Pedra Branca mountains of Caldas municipality in the state of
Minas Gerais, Hoehne found a small Octomeria plant exhibiting a rupicolous growth habit. Subsequently, in 1928, he
formally described it as O. albiflora. However, this taxon shares the same locality as the type collection of O. lithophila
and also displays identical morphological characteristics, including fleshy flat or conduplicate leaves, ramicauls with
few internodes, elliptic-lanceolate-shaped sepals and petals, and white-colored flowers. Consequently, we propose that
O. albiflora be considered a synonym of O. lithophila, with the latter being the accepted as is the older taxon.
Octomeria ochroleuca Barbosa Rodrigues (1877: 31).
Type:—BRAZIL. Minas Gerais: Caldas, Serra dos Poços, January, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here:
Barbosa Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 202A,
cited as tab. 426A (then unpublished) in Barbosa Rodrigues (1877), reproduced in Sprunger et al. (1996: 260).
Octomeria palmyrabellae Barbosa Rodrigues (1937: 38).
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242 • Phytotaxa 620 (3) © 2023 Magnolia Press
Type:—BRAZIL. São Paulo: Without locality, May, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here: Original
illustration published in the “Orchidaceae Novas de Barbosa Rodrigues”: tab. 35 (Barbosa Rodrigues 1937: 41).
Octomeria praestans Barbosa Rodrigues (1882: 112).
Type:—BRAZIL. Santa Catarina: Joinville, January, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here: Barbosa
Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 197, cited as tab.
709 (then unpublished) in Barbosa Rodrigues (1877), reproduced in Sprunger et al. (1996: 255).
Octomeria rubrifolia Barbosa Rodrigues (1877: 31).
Type:—BRAZIL. Minas Gerais: Caldas, Pedra Branca, December, without year, J.B. Rodrigues s.n. (lost).—Lectotype designated here:
Barbosa Rodrigues’s original illustration at Biblioteca Barbosa Rodrigues, “Iconographie des Orchidées du Brésil” 3: tab. 203B,
cited as tab. 390B (then unpublished) in Barbosa Rodrigues (1877), reproduced in Sprunger et al. (1996: 261).
Acknowledgements
We thank Marcelo R. Miranda and Nicolás G. Morales for helping with the “Lankester Composite Dissection Plate
(LCDP)”, Toscano & Wade L. Collier for the photographs, and L.K.R. Hinoshita for the illustration. The first author
would like to thank CAPES (88882.434095/2019-01), UFPR and UNESP for supporting this and future research.
E.C.Smidt and Toscano for the teachings regarding the Orchidaceae family. E.L.F. Menezes thanks to Fabiane
Nepomuceno da Costa (DIAM), Evandro Luiz Mendonça Machado (HDJF) for their logistical support and FAPEMIG
for awarding the author ‘s grant. The Biodiversity Authorization and Information System (SISBIO) of the Chico
Mendes Institute for Biodiversity Conservation (ICMBio) for the fieldwork license.
References
Brazil Flora Group (2022) Brazilian Flora 2020: Leveraging the power of a collaborative scientific network. Taxon 71: 178–198.
https://doi.org/10.1002/tax.12640
Brown, R. (1813) A catalogue of the plants cultivated in the Royal Botanic Garden at Kew, 2nd ed., vol. 5. Hortus Kewensis, London,
211 pp.
Chiron, G.R. (2012) Un nouveau genre brésilien dans la soustribu Pleurothallidinae (Orchidaceae), avec une nouvelle espèce. Richardiana
12: 78–92.
Cogniaux, A.C. (1896) Orchidaceae, Tribus IV: Pleurothallidinae. In: Martius, C.F.P., Eichler, A.W. & Urban, I. (Eds.) Flora brasiliensis.
Fleischer F., Monarchii, Leipzig, pp. 552–566.
Forster, W. (2007) Estudo taxonômico das espécies com folhas planas a conduplicadas do gênero Octomeria R.Br. (Orchidaceae). Tese de
Doutorado. Instituto de Biociências, University of São Paulo, São Paulo, 287 pp.
Hoehne, F.C. & Schlechter, F.R.R. (1928) Contribuição ao conhecimento das Orchidaceae. Archivos de Botânica do São Paulo 1: 230.
IUCN (2022) The IUCN Red List of Threatened Species. Version 2022-15.1. Available from: https://www.iucnredlist.org (accessed 16
Oct. 2023)
Krahl, D.R.P., Krahl, A.H., Chiron, G. & Terra-Araújo, M.H. (2022) Rediscovery and first record of Octomeria romerorum (Orchidaceae,
Pleurothallidinae) for Brazil. Brittonia 74: 202–206.
https://doi.org/10.1007/s12228-022-09702-2
Karremans, A.P. (2016) Genera Pleurothallidinae: an updated phylogenetic overview of Pleurothallidinae. Lankesteriana 16: 219–241.
https://doi.org/10.15517/lank.v16i2.26008
Lindley, J.A. (1859) Brachionidium. In: Matthews, J. (Eds.) Folia Orchidacea. An Enumeration of the Known Species of Orchids (Fasc.
8–9). Bradbury & Evans, London, 121 pp.
Luer, C.A. (1986) Icones Pleurothallidinarum I. Systematics of Pleurothallidinae (Orchidaceae). Monographs in Systematic Botany from
Missouri Botanical Garden 15: 1–81.
Luer, C.A. (2004) Icones Pleurothallidinarum XXVI. Systematics of Pleurothallis subgenus Acianthera (Orchidaceae); a second century
of new species of Stelis; Epibator, Ophidion, Zootrophion. Monographs in Systematic Botany from the Missouri Botanical Garden,
95: 1–265.
A NEW SPECIES & NOTES IN OCTOMERIA FROM BRAZIL Phytotaxa 620 (3) © 2023 Magnolia Press • 243
Luer, C.A. (2010) Icones Pleurothallidinarum XXXI. Addenda: new species of Brachionidium, Lepanthes, Masdevallia, Octomeria,
Platystele, Pleurothallopsis and Porroglossum. Monographs in Systematic Botany from Missouri Botanical Garden 120: 1–154.
Menini Neto, L. & Docha Neto, A. (2009) Redescoberta e tipificação de Octomeria leptophylla Barb. Rodr. (Orchidaceae), micro-orquídea
endêmica de Minas Gerais, Brasil. Rodriguésia 60: 461–465.
https://doi.org/10.1590/2175-7860200960216
Mori, S.A. & Ferreira, F.C. (1987) A distinguished Brazilian botanist, João Barbosa Rodrigues (1842–1909). Brittonia 39: 73–85.
https://doi.org/10.2307/2806978
Pabst, G.F.J. (1978) Additamenta ad orchideologiam brasiliensem-XX. Bradea 2: 45–56.
Pridgeon, A.M., Cribb, P.J., Chase, M.W. & Rasmussen, F.M. (2009) Genera Orchidacearum, vol 4, Epidendroidea I. Oxford University
Press, Oxford, 672 pp.
Rodrigues, J.B. (1877) Genera et Species Orchidearum Novarum I. Sebastianopolis, Typografia Nacional, Rio de Janeiro, 240 pp.
Rodrigues, J.B. (1882) Genera et Species Orchidacearum Novarum II. Sebastianopolis, Typografia Nacional, Rio de Janeiro, 295 pp.
Rodrigues, J.B. (1937) Orchidaceae Novas de Barbosa Rodrigues. Rodriguésia 8: 38–42.
Santos, T.F., Toscano de Brito, A.L.V. & Smidt, E.C. (2020) Octomeria (Orchidaceae) no estado do Paraná, Brasil. Rodriguésia 71:
1–37.
https://doi.org/10.1590/2175-7860202071026
Santos, T.F., Toscano de Brito, A.L.V. & Smidt, E.C. (2022) A new Octomeria (Orchidaceae: Pleurothallidinae) and nomenclatural notes
for related Southern Brazilian species. Phytotaxa 572: 275–282.
https://doi.org/10.11646/phytotaxa.572.3.6
Schlechter, F.R.R. (1922) Archivos do Jardim Botânico do Rio de Janeiro III. Off Graphicas Livraria Francisco Alves, Rio de Janeiro.
291 pp.
Schlechter, F.R.R. (1922) Contribuições ao conhecimento das Orchidáceas do Brasil I. Anexos das Memórias do Instituto de Butantan,
Secção Botânica 1: 1–70.
Sprunger, S., Cribb, P. & Toscano de Brito, A.L.V. (Eds.) (1996) João Barbosa Rodrigues: Iconographie des orchidées du Brésil, 2 vols.
Friedrich Reinhardt Verlag, Basle, 182 pp.
Turland, N.J., Wiersema, J.H., Barrie, F.R., Greuter, W., Hawksworth, D.L., Herendeen, P.S., Knapp, S., Kusber, W.-H., Li, D.-Z., Marhold,
K., May, T.W., McNeill, J., Monro, A.M., Prado, J. Price, M.J. & Smith, G.F. (eds.) (2018) International Code of Nomenclature for
algae, fungi, and plants (Shenzhen Code) adopted by the Nineteenth International Botanical Congress Shenzhen, China, July 2017.
Regnum Vegetabile 159. Koeltz Botanical Books, Glashütten, 254 pp.
Vieria-Uribe, S. & Karremans, A.P. (2017) Andinia chaoae. In: Karremans, A.P., Vieira-Uribe, S., Hágster, E. & Moreno, J.S. (Eds.)
Species Orchidacearum, Icones Colombianae I. Cartago, 12 pp. [Published online]
Wawra, H.R.F. (1888) Itinera Principum Sax Coburgi, vol. 2. Druck und Commissionsverlag von Carl Gerold’s sohn, Vienna, 205 pp.
