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A new species, Boeica ornithocephalantha F.Wen, Y.G.Wei & T.V.Do (Gesneriaceae), is described from the northern part of Vietnam. This new species is most similar to Boeica ferruginea Drake, but clearly differs from the latter by the unusual corolla. A provisional IUCN conservation assessment is provided.
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Boeica ornithocephalantha (Gesneriaceae),
a new species from northern Vietnam
F. Wen1,2, T.V. Do3, X. Hong4, S. Maciejewski2,5 & Y.G. Wei1,2,*
1Guangxi Key Laboratory of Plant Conservation and Restoration Ecology
in Karst Terrain, Guangxi Institute of Botany, Guangxi Zhuang
Autonomous Region and the Chinese Academy of Sciences,
CN-541006, Guilin, Guangxi, China
wenfang760608@139.com
2Gesneriad Conservation Center of China (GCCC),
CN-541006, Guilin, Guangxi, China
3Department of Biology, Vietnam National Museum of Nature,
Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet,
Cau Giay, Ha Noi, Vietnam
dovantruong_bttn@yahoo.com
4The Key Laboratory of Conservation and Employment of Biological
Resources of Anhui, Herbarium, College of Life Sciences,
Anhui Normal University, Wuhu, CN-241000, Anhui, China
hongxin1989@vip.qq.com
5The Gesneriad Society, Inc. 1122 East Pike Street, PMB 637,
Seattle, WA 98122-3916, USA
teciu1949@gmail.com
*corresponding author: weiyigang@aliyun.com
ABSTRACT. A new species, Boeica ornithocephalantha F.Wen, Y.G.Wei & T.V.Do
(Gesneriaceae), is described from the northern part of Vietnam. This new species is most
similar to Boeica ferruginea Drake, but clearly differs from the latter by the unusual corolla. A
provisional IUCN conservation assessment is provided.
Keywords. Boeica, Gesneriaceae, IUCN conservation assessments, Vietnam
Introduction
The genus Boeica Clarke (Gesneriaceae) was rst published by Clarke (1874). It
is a small genus in subfamily Didymocarpoideae, tribe Trichosporeae, subtribe
Leptoboeinae of the Gesneriaceae (Weber et al., 2013). Currently, there are about
twelve species of Boeica from China, Myanmar, Bhutan, northern India and the
northern part of Vietnam (Wang et al., 1990, 1998; Li & Wang, 2004; Weber, 2004), the
species described most recently being B. glandulosa B.L.Burtt (Burtt, 2001). Boeica
species usually grow in shaded and damp locations with the different species having
variable owering and fruiting seasons, thereby often making it a challenge to collect
specimens for identication. Except for Boeica guileana Burtt (Burtt, 1977), which is
139
Gardens Bulletin Singapore 68(1): 139–144. 2016
doi: 10.3850/S2382581216000107
a rosette plant without distinct stems, the remaining species of Boeica are caulescent,
including the newly described species below.
During a eld investigation of the ora of northern Vietnam we collected an
unknown species of Boeica which required further investigation. Plants were grown
at the nursery of Guilin Botanical Garden and the Gesneriad Conservation Center
of China (GCCC) from seeds collected in the Pu Hu Nature Reserve, Quan Hóa
district, Thanh Hóa province, northern Vietnam. When the plants owered, the oral
morphology provided further conrmation that the collection was a new species of
Boeica. Michael Möller, a Gesneriaceae researcher at the Royal Botanic Garden
Edinburgh, also supported this conclusion. We describe and illustrate the proposed
new species here and provide a provisional IUCN conservation assessment following
the guidelines in IUCN (2012).
Taxonomy
Boeica ornithocephalantha F.Wen, T.V.Do & Y.G.Wei, sp. nov.
Most similar to Boeica ferruginea Drake but B. ornithocephalantha is characterised
by a shorter petiole (1–1.5 cm long vs 3–5 cm long in Boeica ferruginea), adaxial leaf
blade densely glandular and non-glandular pubescent (adaxially appressed puberulent,
abaxially sparsely woolly to glabrescent, woolly to villous along veins in Boeica
ferruginea), peduncle 12–20 cm long and sparsely glandular pubescent (5–8 cm and
villous in Boeica ferruginea), bracts 3 (2 in Boeica ferruginea), corolla in lateral view
reminiscent of the head of a bird and outside glabrous (not reminiscent of a bird and
outside sparsely pubescent in Boeica ferruginea), corolla tube 1–1.2 mm long (c. 2
mm long in Boeica ferruginea), and disc inconspicuous or nearly none (circular, c. 0.2
mm high in Boeica ferruginea). – TYPE: Vietnam, Thanh Hóa province, Quan Hóa
district, Quan Hóa town, Pu Hu Nature Reserve, alt. 900 m, 18 July 2014, owering,
Wen Fang WF140718-01 (holotype VNMN; isotype IBK). (Figs. 1 & 2)
Herbs, stoloniferous. Stems 8–18 cm long, unbranched or rarely branched, densely
yellowish-brown woolly to villous or pilose when young, mostly glabrescent when
mature, rarely glabrous; rhizomes short, 2–4 cm long, c. 2 mm in diameter. Leaves
alternate, internodes c. 1 cm long, usually 6–8 leaves clustered at the top of stem;
petiole 1–1.5 cm long, densely brown villous; blades ovate-elliptic to oblong, 10–
18 × 7–10 cm, mature leaf blades usually ascending, apex obtuse to rounded, base
attenuate, margin irregularly serrate, densely glandular and non-glandular pubescent
on the upper surface, upper surface distinctly bullate, lateral veins 10–13 on each
side, impressed adaxially and prominent abaxially, densely yellowish-brown woolly
on the veins of the lower surface, the rest yellowish-brown villous. Inorescence
axillary, a dichasium, 12- to 35-owered or more; peduncle 12–20 cm long, c. 1.2 mm
in diameter, sparsely purplish brown and white erect glandular pubescent, the hairs
varying in length; bracts 3, the larger two narrowly lanceolate, c. 5 mm long, c. 1 mm
in diameter at base, apex acute, margin entire, the remaining one linear, c. 1.5 mm
Gard. Bull. Singapore 68(1) 2016
140
long, 0.2–0.3 mm in diameter at base, apex acuminate, margin entire, outer surface
sparsely purplish brown glandular puberulent, inside nearly glabrous; pedicels 1.5–4.5
cm long, 1–1.2 mm in diameter, sparsely purplish brown and white erect glandular
pubescent. Calyx divided to the base, 5-lobed, apex green, the rest pinkish purple,
lobes linear lanceolate, 4–5 mm long, c. 0.9 mm in diameter at base, margin entire,
outside reddish purple glandular puberulent, inside nearly glabrous; Flowers slightly
fragrant. Corolla small, 4–6 mm long, c. 5 mm in diameter, outside glabrous, initially
shallowly campanulate, limb inconspicuously 2-lipped, two larger lobes of abaxial
lip inexed from the middle and covering the anthers; corolla tube extremely short,
1–1.2 mm long; adaxial lip 2-lobed at least to middle of lip, lobes nearly equal, 3–4.5
mm long, c. 2 mm in diameter at base, wider but mostly shorter than abaxial lip lobes,
external margin of lobes white, the centre of lobes green, internal margin of lobes
white to pale pink, the centre dark purplish red; abaxial lip 3-lobed, all white, lateral
lobes larger, broadly lanceolate to oblong, apex obtuse, c. 3.5 mm long, c. 1.5 mm in
Fig. 1. Boeica ornithocephalantha F.Wen, Y.G.Wei & T.V.Do. A. Top view of plant. B. Upward
view of plant. C. Cyme with open owers. D. Front view of cyme. (Photos: Fang Wen)
141
Boeica ornithocephalantha, a new species from Vietnam
diameter at base, the central lobe lanceolate, apex acuminate and inexed, 3.5–4 mm
long, 1.2–1.5 mm in diameter at base. Stamens 4, free; laments white, 0.5–0.8 mm
long, glabrous, adnate to the base of corolla; anthers dark purplish red, cordate, c. 0.5
mm long, 0.4–0.6 mm in diameter at base, dehiscing poricidally; staminode 1, c. 0.1
mm long, dark purple to black, adnate to the base of corolla. Disc inconspicuous or
nearly absent. Ovary ovoid, 1.5–2 mm long, c. 1 mm in diameter, glandular puberulent;
style 5–7 mm long, mostly glabrous but glandular puberulent at the base. Stigma 1,
apex truncate, pale green. Capsule linear, nearly glabrous, 1.5–2 cm long.
Distribution. Only known from Pu Hu Nature Reserve, near En Village, Quan Hóa
town, Quan Hóa district, Thanh Hóa province, Vietnam.
Habitat. Primarily growing on shaded slopes in valleys above streams, often locally
common, at low altitude. It occurs on rocks covered with humus under evergreen
forest, not prone to human disturbance.
Fig. 2. Boeica ornithocephalantha F. Wen, Y.G.Wei & T.V.Do. A. Obliquely view of corollas.
B. Inside of corolla. C. Outside of corolla. D. Pistil and calyx. E. Capsule. (Photos: A, E: Fang
Wen; B–D: Hua-Fei Cen)
Gard. Bull. Singapore 68(1) 2016
142
Etymology. The scientic name is due to the perception by the authors that the lateral view
of the mature corolla looks like the head of a bird. The epithet, “ornithocephalantha”,
is composed of the Greek elements ‘ornitho-’ for bird, ‘cephal-’ for head and ‘-antha’
for ower.
Provisional IUCN Conservation Assessment. Vulnerable VU B2ab(ii,iii). This species
is only known from very few collections and details on the size of the population in Pu
Hu Nature Reserve are unknown. We acknowledge that the type locality is protected
from exploitation and development by being in a Nature Reserve, thereby guaranteeing
the plants protected status. Based on our observations during the eld work currently
the plants appear to be locally abundant. However, the known habitat is also disturbed
by intentional and unintentional human activity such as for path building. According to
the IUCN red list categories and criteria, the species should be considered Vulnerable
(IUCN, 2012).
Notes. Boeica species are characterised by an indumentum of shiny bristly brown
hairs, a corolla with a short tube and at limb, four free stamens, and poricidal or
transverse anthers that are coherent at the tips (Pellegrin, 1926; Burtt, 1977; Li &
Wang, 2004). Among the 12 known species, some have a distinctly zygomorphic
corolla, a very short corolla tube, a spreading corolla limb, and four obvious stamens
(here connivent), traits that Burtt (1977) considered to be ‘primitive’. The new species
possesses some of the above-mentioned morphological traits.
ACKNOWLEDGEMENTS. We thank Dr Michael Möller of the Royal Botanic Garden
Edinburgh for the recognition of this species, and Hua-Fei Cen for the photos. We also
acknowledge the Vietnam Ministry of Agriculture and Rural Development and the Vietnam
National Museum of Nature for granting the collecting permissions. This study was
nancially supported by the Guangxi Natural Science Foundation (2013GXNSFAA019071,
2013GXNSFBA019078 & 2015GXNSFBB139004), Guangxi Forest S & T Projects (Gui Lin
Ke Zi [2014] 27), International S and T Cooperation Projects of Guangxi (Guikehe 1347004-4)
& Guilin (20130412) and the Science Research Foundation of the Guangxi Institute of Botany
(Guizhiye11005).
References
Burtt, B.L. (1977). Studies in the Gesneriaceae of the old world. XLI. Notes on Boeica and
Didissandra. Notes Roy. Bot. Gard. Edinburgh 35: 369–374.
Burtt, B.L. (2001). Flora of Thailand: annotated checklist of Gesneriaceae. Thai Forest Bull.,
Bot. 29: 81–109.
Clarke, C.B. (1874). Commelynaceae et Cyrtandraceae Bengalenses. London: Spink & Co.
IUCN (2012). IUCN Red List Categories and Criteria: Version 3.1. 2nd ed. – Gland, Switzerland
and Cambridge, UK: IUCN.
Li, Z.Y. & Wang, Y.Z. (2004). Boeica. In: Li, Z.Y. & Wang, Y.Z. (eds) Plants of Gesneriaceae
in China. Pp. 109–112. Zhengzhou: Henan Science and Technology Publishing House.
143
Boeica ornithocephalantha, a new species from Vietnam
Pellegrin, F. (1926). Les Gesnéracées-Cyrtandrées d’Indo-Chine. Bull. Soc. Bot. France 73(3):
412–429.
Wang, W.T., Pan, K.Y., Li, Z.Y, Weitzman, A.L. & Skog, L.E. (1998). Gesneriaceae. In: Wu,
Z.Y. & Raven, P.H. (eds) Flora of China 18: 244–401. Beijing, China: Science Press and
St. Louis, Missouri, USA: Missouri Botanical Garden Press.
Wang, W.T., Pan, K.Y., Zhang, Z.Y. & Li, Z.Y. (1990). Gesneriaceae. In: Wang, W.T. (ed) Flora
Reipublicae Popularis Sinicae 69: 125–581. Beijing: Science Press.
Weber, A. (2004). Gesneriaceae. In: Kubitzki, K. & Kadereit, J.W. (eds) The Families and
Genera of Vascular Plants, vol. 7. Dicotyledons. Lamiales (except Acanthaceae incl.
Avicenniaceae). Heidelberg: Springer.
Weber, A., Clark, J.L. & Möller, M. (2013). A new formal classication of Gesneriaceae.
Selbyana 31(2): 68–94.
Gard. Bull. Singapore 68(1) 2016
144
... Boeica C.B.Clarke is a genus of Gesneriaceae and was first published by Clarke (1874). It is distributed widely from northern and northeastern India, Bhutan, Myanmar, China, Thailand, Vietnam and Peninsular Malaysia (Pellegrin 1926, Burtt 1977, 2001, Wang et al. 1990, 1998, Ho 2000, Li and Wang 2004, Phuong 2005, Weber et al. 2013, Wen et al. 2016). The genus is placed in the subfamily Didymocarpoideae, tribe Trichosporeae, subtribe Leptoboeinae (Weber et al. 2013). ...
... Boeica plants are usually terrestrial, often lithophytic, or occasionally epiphytic perennial herbs. The genus includes 14 species after B. griffithii C.B.Clarke was reduced to variety and one new each from China and India were recently described (Chakrabarty et al. 2016, Möller et al. 2016, Wen et al. 2016, Hareesh et al. 2018. From Vietnam, five species have been recorded (Pellegrin 1926, Ho 2000, Phuong 2005, Wen et al. 2016, although Burtt (1962) regards B. confertiflora (Drake) Pellegr. ...
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Les Gesnéracées-Cyrtandrées d'Indo-Chine
  • F Pellegrin
Pellegrin, F. (1926). Les Gesnéracées-Cyrtandrées d'Indo-Chine. Bull. Soc. Bot. France 73(3): 412-429.
Commelynaceae et Cyrtandraceae Bengalenses
  • C B Clarke
Clarke, C.B. (1874). Commelynaceae et Cyrtandraceae Bengalenses. London: Spink & Co.
Gesneriaceae (eds) The Families and Genera of Vascular Plants
  • A Weber
Weber, A. (2004). Gesneriaceae. In: Kubitzki, K. & Kadereit, J.W. (eds) The Families and Genera of Vascular Plants, vol. 7. Dicotyledons. Lamiales (except Acanthaceae incl. Avicenniaceae). Heidelberg: Springer.
Flora of Thailand: annotated checklist of Gesneriaceae
  • B L Burtt
Burtt, B.L. (2001). Flora of Thailand: annotated checklist of Gesneriaceae. Thai Forest Bull., Bot. 29: 81-109.