ArticlePDF Available

Petrocosmea funingensis (Gesneriaceae): A new species from southeastern Yunnan, China

Authors:
  • Guangxi Institute of Botany, Guangxi Zhuang Autonomous Region and the Chinese Academy of Sciences

Abstract and Figures

Petrocosmea funingensis, a new species from southeastern Yunnan, China is here described and illustrated. Based on morphological characters it is assumed to belong to section Anisochilus, because of the shallow or slight split of the corolla lobes with the upper lip being nearly half as long as the lower one. Within the section, the new species is associated with the species from series Iodioides, due to the particularly extensive fusion of the two adaxial lobes and is morphologically most similar to P. huanjiangensis and P. iodioides, especially in floral structure and traits, but can be distinguished from these species by several quantitative and qualitative characters of the leaves, peduncles, calices, stamens, staminodes and styles.
Content may be subject to copyright.
Accepted by Maarten Christenhusz: 20 Dec. 2012; published online in PDF: 18 Jan. 2013 5
PHYTOTAXA
ISSN 1179-3155 (print edition)
ISSN 1179-3163 (online edition)
Copyright © 2013 Magnolia Press
Phytotaxa 77 (1): 58 (2013)
www.mapress.com/phytotaxa/Correspondence
http://dx.doi.org/10.11646/phytotaxa.77.1.2
Petrocosmea funingensis (Gesneriaceae): a new species from southeastern
Yunnan, China
QIANG ZHANG1,*, BO PAN1, TAO MENG1, GUO-FENG LI2, WEI-BIN XU1 & ZHI-MING LI3
1Guangxi Inst. of Botany, Guangxi Zhuang Autonomous Region and Chinese Academy of Sciences, 541006, Guilin, China.
2South China Botanical Garden, Chinese Academy of Sciences, 510650, Guangzhou, China.
3Yunnan Academy of Scientific and Technical Information, Kunming, 650051, Yunnan, China.
*Author for Correspondence. E-mail: Qiangzhang04@126.com
Abstract
Petrocosmea funingensis, a new species from southeastern Yunnan, China is here described and illustrated. Based on
morphological characters it is assumed to belong to section Anisochilus, because of the shallow or slight split of the
corolla lobes with the upper lip being nearly half as long as the lower one. Within the section, the new species is
associated with the species from series Iodioides, due to the particularly extensive fusion of the two adaxial lobes and is
morphologically most similar to P. huanjiangensis and P. iodioides, especially in floral structure and traits, but can be
distinguished from these species by several quantitative and qualitative characters of the leaves, peduncles, calices,
stamens, staminodes and styles.
Introduction
Petrocosmea Oliver, with ca. 30 formally recognized species (Wang, 1985, Li & Wang 2004, Wei et al. 2010),
is a genus of small lithophytic herbs in the family Gesneriaceae. The genus has a centre of diversity in the
plateau of southwestern China, where more than 20 species have been recorded (Wang et al. 1998, Li & Wang
2004, Wei et al. 2010). According to the last complete revision of the genus by Wang (1985), 27 species with
4 varieties were recognized in three sections: section Deinanthera Wang, which is characterized by its
constricted anther apex; section Anisochilus Hemsl., which possesses slightly split corolla lobes, with the
upper lip nearly half as long as the lower one; and section Petrocosmea, which has deeply split and almost
equally long lobes (Li & Wang 2004). Almost all the known Petrocosmea taxa have been recorded as being
restricted to small areas on moist limestone rocks in montane forests, usually at elevations over 1000 meters
and several new species have been described in the genus during the last decade (e.g. Wei & Wen 2009,
Middleton & Triboun 2010, Zhao & Shui, 2010, Xu et al. 2011c, Qiu et al. 2012). In addition to new species
of Petrocosmea, numerous new species of Gesneriaceae have recently been described from southern China,
further increasing the knowledge of this diverse family (e.g. Xu et al. 2008, Li & Möller 2009, Huang et al.
2010, Li & Zhu 2010, Xu et al. 2010, Huang et al. 2011, Wu et al. 2011, Xu et al. 2011a, 2011b, 2011c, Hong
et al. 2012, Huang et al. 2012, Qiu et al. 2012, Wen et al. 2012, Wu et al. 2012, Xu et al. 2012).
During recent field studies in May 2012, a population of Petrocosmea was found flowering at a limestone
cave entrance at an elevation of ca. 1400 m in Funing County in the province of Yunnan. This new population
has flowers with a slightly divided upper lip that is much shorter than the lower one, so this species can be
attributed to Petrocosmea section Anisochilus. After comparing the plants with all recognized species of the
genus in relevant literature (e.g. Wang et al. 1998, Li & Wang 2004, Wei & Wen 2009, Middleton & Triboun
2010, Wei et al. 2010, Zhao & Shui 2010, Xu et al. 2011c) and comparing our plants against other specimens
of Petrocosmea, the population was confirmed to be distinguishable from all others and therefore it must
represent an undescribed species, which we describe below.
ZHANG ET AL.6 Phytotaxa 77 (1) © 2013 Magnolia Press
Taxonomy
Petrocosmea funingensis Q.Zhang & B.Pan, sp. nov. (Fig. 1)
A new species with leaf blades that are significantly larger than those of all other species in Petrocosmea sect.
Anisochilus. Its flowers appear to be associated with the species from series Iodioides sect. Anisochilus because of
the fusion (only slightly divided) of the upper lip and is most similar to Petrocosmea huanjiangensis Y.Liu &
W.B.Xu in Xu et al. (2011: 385) and P. iodioides Hemsley (1899: 2599). It is distinguished by the densely lanate
filaments that are previously only known from the recently described P. huanjiangensis, but the latter differs in
having significant smaller and peltate leaves, constricted anthers, glabrous staminodes, densely pubescent styles and
green peduncles etc. The diagnostic characters of the new species and the two morphologically similar taxa are listed
comparatively in Table 1.
FIGURE 1. Petrocosmea funingensis. A) Habit; B) Corolla opened showing stamens; C) Calyx; D) Pistil; E–F) Stamen. Drawn by
Wen-Hong Lin.
Phytotaxa 77 (1) © 2013 Magnolia Press 7
PETROCOSMEA FUNINGENSIS SP. NOV.
Type:—CHINA. Yunnan: Funing County, Tianpeng town. 1 400 m, 10 May 2012, Q. Zhang & B. Pan 1579 (holotype
IBK!, isotype PE!).
Perennial, rosette-forming herbs. Rhizomes 2.0–5.5 cm long, 1–2 cm thick with fibrous roots. Leaves 5–20
per plant, basal, long-petiolate, papery when dry; petioles cylindrical, 4–12 cm, pubescent; leaf blades ovate
to broadly ovate or broadly elliptic, 5–15 × 4–8 cm, adaxially pubescent, abaxially brown glandular and pilose
along the veins, bases cordiform, sometimes inequilateral, margins serrate, apices acute; lateral veins 5–8 on
each side of the midrib, adaxially impressed, abaxially conspicuous. Cymes variable in number, 2–4 flowers
per inflorescence; peduncles 6–10 cm, pilose; bracts 1, narrowly lanceolate, 5–7 mm, margins entire,
pubescent; pedicels 1.5–2.5 cm long, pubescent. Calices red to purple, 5-lobed to the base, lobes almost equal
in length, lanceolate, ca. 6 × 1 mm, pubescent outside, glabrous inside. Corolla blue to purple, 1.2–1.5 cm,
pubescent outside, glabrous inside; tube ca. 6.5 mm, two yellow spots at the base inside; upper lip ca. 5 mm,
slightly 2-lobed; lower lip ca. 1.0 × 1.2 cm, shallowly 3-lobed, central lobe subrotund, lateral lobes broadly
ovate. Stamens 2, ca. 5 mm long, adnate to the corolla tube at the base; filaments linear, geniculate near the
middle, 4 mm, densely lanate around the middle; anthers oblong, ca. 3 mm, dorsifixed, glabrous; staminodes
3, linear, ca. 2 mm, thinly pubescent at the middle, adnate ca. 1 mm above the corolla base. Pistil ca. 1.2 cm;
ovary ca. 4 mm long, 2 mm wide, pubescent; style ca. 7 mm long, glabrous. Fruit not seen.
Distribution, habitat and ecology:Petrocosmea funingensis has hitherto only been found from one
locality (at the entrance of a limestone cave) in Tianpeng town, Funing County, Yunnan Province, southwest
China. The plants grow on the precipice of a limestone cave entrance at an elevation of ca. 1400 m. The place
has a subtropical montane climate and is covered with evergreen forest, with a documented annual average
temperature 15.6 ˚C, an average precipitation of 1210.6 mm annually and an average humidity of 89%.
Phenology:—The specimens of the new species flower in May.
Etymology:—The epithet is derived from the type locality Funing County, Yunnan Province, southwest
China.
TABLE 1. Morphological comparisons of Petrocosmea funingensis with P. huanjiangensis and P. iodioides.
Acknowledgements
The authors thank Mr. Wen-Hong Lin (IBK) for the beautiful drawing and Prof. Yan Liu (IBK) for helpful
suggestions. We also thank Maarten Christenhusz and an anonymous reviewer for careful corrections and
suggestions to improve the manuscript. This study was supported by the National Natural Science Foundation
of China (Grant No. 41161011) and Guangxi Natural Science Foundation (2012GXNSFBA053067).
Petrocosmea funingensis P. huanjiangensis P. iodioides
Leaf not peltate peltate not peltate
Leaf lade 5–15 × 4–8 cm 1.5–3.5 × 1.5–2.5 cm 1.5–5 × 1.5–4.5 cm
Peduncle red to purple green green
Calyx outside red to purple outside green outside green
Filament ca. 4 mm long, densely lanate 6–7.2 mm long, densely lanate 2.2–2.5 mm long, puberulent
Anther not constricted at the apex constricted near the apex not constricted at the apex
Staminode 3, thinly pubescent at the middle 3, glabrous 2, glabrous
Style glabrous densely pubescent glabrous
ZHANG ET AL.8 Phytotaxa 77 (1) © 2013 Magnolia Press
References
Hemsley, W.B. (1899) Petrocosmea iodioides Hemsl., in: Hooker, W.D. (ed.), Icones Plantarum 4(6): 2599. Longman,
London.
Hong, X., Zhou, S.B. & Wen, F. (2012) Primulina chizhouensis sp. nov. (Gesneriaceae), a new species from a limestone
cave in Anhui, China. Phytotaxa 50: 13–18.
Huang, Y.S., Xu, W.B. & Liu, Y. (2011) Chirita rongshuiensis, a new species of Gesneriaceae from northern Guangxi,
China. Taiwania 56 (1): 54–57.
Huang, Y.S., Xu, W.B., Wu, L. & Liu, Y. (2012) Primulina gongchengensis (Gesneriaceae), a new species from Guangxi,
China. Annales Botanici Fennici 40: 107–110. http://dx.doi.org/10.5735/085.049.0118
Huang, Y.S., Xu, W.B., Ye, X.X. & Liu, Y. (2010) Chirita luzhaiensis, a new species of Gesneriaceae from limestone
areas in Guangxi, China. Journal of Tropical and Subtropical Botany 18: 137–139.
Li, J.M. & Möller, M. (2009) Chirita grandibracteata (Gesneriaceae), a new species from Yunnan, China. Annales
Botanici Fennici 46: 125–129. http://dx.doi.org/10.5735/085.046.0207
Li, J.M. & Zhu, S.X. (2010) Chirita auriculata (Gesneriaceae), a new species from China, placed in sect. Chirita based
on molecular data. Annales Botanici Fennici 47: 221–225. http://dx.doi.org/10.5735/085.047.0307
Li, Z.Y. & Wang, Y.Z. (2004) Plants of Gesneriaceae in China. Henan Science and Technology Publishing House,
Zhengzhou, pp. 1–721.
Middleton, D.J. & Triboun, P. (2010) Two new species of Petrocosmea (Gesneriaceae) from Thailand. Thai Forest
Bulletin (Botany) 38: 42–47.
Qiu, Z.J., Wang, X.L., Liu, Z.Y., Yang, J.F. & Zhang, S.Z. (2012) Cytological and phylogenetic study of Petrocosmea
hexiensis (Gesneriaceae), a new species from Chongqing, China. Phytotaxa 74: 30–38.
Wang, W.T. (1985) The second revision of the genus Petrocosmea (Gesneriaceae). Acta Botanica Yunnanica 7: 49–68.
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 Vol. 18. Science Press, Beijing; Missouri Botanical Garden Press, St. Louis, pp. 244–401
Wei, Y. G. & Wen , F. (200 9) Petrocosmea xingyiensis (Gesneriaceae), a new species from Guizhou, China. Novon 19:
261–262. http://dx.doi.org/10.3417/2007090
Wei, Y.G., Wen, F., Möller, M., Monro, A., Zhang, Q., Gao, Q., Mou, H.F., Zhong, S.H. & Cui, C. (2010) Gesneriaceae
of South China. Guangxi Science and Technology Publishing House, Nanning, pp. 1–777.
Wen, F., Qin, G.L., Wei, Y.G., Liang, G.Y. & Gao, B. (2012) Primulina hochiensis var. rosulata (Gesneriaceae) a new
variety at an entrance of a limestone cave from Guangxi, China. Phytotaxa, 54: 37–42.
Wu, L., Zhang, Q., Xu, W.B. & Mo, S.S. (2012) Primulina guigangensis (Gesneriaceae): a new species from limestone
area in Guangxi, China. Phytotaxa 38: 19–23.
Wu, W.H., Xu, W.B., Nong, D.X. & Liu, Y. (2011) Chirita ningmingensis (Gesneriaceae), a new species from Guangxi,
China. Annales Botanici Fennici 48: 422–424. http://dx.doi.org/10.5735/085.048.0505
Xu, H., Li, Z.Y. & Jiang, H. (2008) A new species of Chirita (Gesneriaceae) from Yunnan, China. Botanical Journal of
the Linnean Society 158: 269–273. http://dx.doi.org/10.1111/j.1095-8339.2008.00913.x
Xu, W.B., Huang, Y.S., Wu, L. & Liu, Y. (2011a) Chirita luochengensis (Gesneriaceae), a new species from limestone
areas in northern Guangxi, China. Brittonia 63: 314–317.
Xu, W.B., Pan, B., Huang, Y.S. & Liu, Y. (2010) Chirita leprosa sp. nov. (Gesneriaceae) from limestone areas in
Guangxi, China. Nordic Journal of Botany 28: 705–708. http://dx.doi.org/10.1111/j.1756-1051.2010.00762.x
Xu, W.B., Pan, B., Huang, Y.S. & Liu, Y. (2011b) Chirita lijiangensis (Gesneriaceae), a new species from limestone area
in Guangxi, China. Annales Botanici Fennici 48: 188–190. http://dx.doi.org/10.5735/085.048.0217
Xu, W.B., Pan, B. & Liu, Y. (2011c) Petrocosmea huanjiangensis, a new species of Gesneriaceae from limestone areas in
Guangxi, China. Novon 21: 385–387. http://dx.doi.org/10.3417/2009101
Xu, W.B., Pan, B., Liu, Y., Peng, C.I. & Chung, K.F. (2012) Two new species, Primulina multifida and P.
pseudomollifolia (Gesneriaceae), from karst caves in Guangxi, China. Botanical Studies 53: 165–175.
Zhao, H.T. & Shui, Y.M. (2010) Petrocosmea shilinensis, a new species of Gesneriaceae from Yunnan, China. Acta
Botanica Yunnanica 32: 328–330.
... In April 2017, during a botanical expedition in SE Yunnan Province, near Vietnam's border, we collected some specimens and living plants bearing buds of an unknown species of Petrocosmea. Later, when they flowered in our greenhouse, we compared the plants with all recognized species of the genus in the relevant literature (Wang 1984, 1985, Wang and Pan 1990, Burtt 1998, Wang et al. 1998, Li and Wang 2005, Wei and Wen 2009, Gou et al. 2010, Middleton and Triboun 2010, Wei et al. 2010, Zhao and Shui 2010, Qiu et al. 2011, 2012, Shaw 2011, Xu et al. 2011, Wang et al. 2013, Zhang et al. 2013, Qiu and Liu 2015, Han et al. 2017, 2018a, 2018b, Li et al. 2019, Wen 2019, Yang et al. 2019 and against specimens of this genus in major herbaria: E, HITBC, IBK, IBSC, K, KUN, MO, NY, PE, US. We found that our newly collected specimen can be distinguished from most other species of Petrocosmea. ...
Article
Full-text available
A new species, Petrocosmea adenophora Z.J.Huang & Z.B.Xin, from SE Yunnan, China, is described here. It closely resembles P. iodioides Hemsl. in leaf blade shape and corolla type, but differs from the latter by some vegetative and generative characters, e.g. densely golden‐brown glandular puberulent all over the plant. We found only one population with no more than 200 mature individuals at the type locality. This species is provisionally assessed as data deficient (DD), following the IUCN Red List Categories and Criteria, because more surveys are needed.
... We also collected living plants and cultivated them in a glasshouse to observe floral characters including the morphology of dorsal petals, petals colors and anthers characters, which were normally used to differentiate species from one another. We then compared the specimens with existing herbarium specimens available at GXMI, IBK, KUN and PE and images available online at A, E, K, MO and P. We also reviewed all relevant literature (Wang 1985, Burtt 1998, Li and Wang 2004, Wei and Wen 2009, Gou et al. 2010, Middleton and Triboun 2010, Zhao and Shui 2010, Shaw 2011, Qiu et al. 2011, Xu et al. 2011, 2012, 2015a, b, Wang et al. 2013, Zhang et al. 2013. Through these efforts, we found a new species among the cultivated plants which is described below as P. chiwui. ...
Article
Full-text available
Petrocosmea chiwui M.Q.Han, H. Jiang & Yan Liu and P. rotundifolia M.Q.Han, H. Jiang & Yan Liu (Gesneriaceae), two new species native to Yunnan, China, are described and illustrated.
... Petrocosmea has more than 50 known species distributed in China, Vietnam, Thailand and India ( Han et al. 2018b); Didymocarpus has approximately 70 species range from northwest India, eastwards through Nepal, Bhutan, northeast India, Myanmar, to southern China, Vietnam, Laos, Cambodia, Thailand, the Malay Peninsula and northwards to Sumatra (Weber and Burtt 1998;Weber et al. 2000;Möller et al. 2016a;Hong et al. 2018); Henckelia has 64 known species found in Sri Lanka, southern and north-eastern India, Nepal, Bhutan, southern China, northern Laos, northern Vietnam and northern Thai- land (Weber et al. 2011;Sirimongkol et al. 2019). After thorough comparisons of diagnostic morphological, anatomical features and herbarium specimens available at BM, E, HITBC, K, KUN, NYBG and P with similar taxa of Petrocosmea, Didymocarpus, and Henckelia, and consulting the relevant literature for Petrocosmea (Wang 1985; Wang et al. 1990Wang et al. , 1998Burtt 1998a;Li and Wang 2004;Wei and Wen 2009;Gou et al. 2010;Middleton and Triboun 2010;Zhao and Shui 2010;Shaw 2011;Xu et al. 2011; Qiu and Liu 2015; Qiu et al. 2011Qiu et al. , 2012Qiu et al. , 2015aQiu et al. , 2015bWang et al. 2013;Zhang et al. 2013;Han et al. 2017Han et al. , 2018aHan et al. , 2018b), Didymocarpus ( Wang et al. 1998;Burtt 1998bBurtt , 1999Burtt , 2001Weber et al. 2000;Hilliard 2001;Li and Wang 2004;Nangngam and Maxwell 2013;Wen et al. 2013;Li and Li 2014;Nangngam and Middleton 2014;Phuong et al. 2014;Li and Wang 2015;Cai et al. 2016;Joe et al. 2016;Hong et al. 2018), and Henckelia ( Wang et al. 1998;Weber and Burtt 1998;Burtt 2001;Weber et al. 2011;Middleton et al. 2010;Ranasinghe et al. 2016;Sirimongkol et al. 2019) from China and adjacent regions, it was confirmed that the four species were new to science. Here, they are described and illustrated with photographs and drawings. ...
Article
Full-text available
Four new species of Gesneriaceae from Yunnan, southwest China, are described and illustrated. They are Petrocosmea rhombifolia , Petrocosmea tsaii , Didymocarpus brevipedunculatus , and Henckelia xinpingensis . Diagnostic characters between the new species and their morphologically close relatives are provided. Their distribution, ecology, phenology, and conservation status are also described.
... In 2016, however, we were fortunate to collect and observe P. leiandra from the type locality and establish more differences between the two species. After careful comparison of the material of the putative new species with the morphological characters of other species in the genus known in literature (Wang 1984(Wang , 1985Burtt 1998;Li & Wang 2004;Wei & Wen 2009;Gou et al. 2010;Middleton & Triboun 2010;Zhao & Shui 2010;Shaw 2011;Xu et al. 2011;Qiu & Liu 2015;Qiu et al. 2011Qiu et al. , 2012Qiu et al. , 2015aQiu et al. , 2015bWang et al. 2013;Zhang et al. 2013), as well as studies on herbarium specimens in major herbaria (GXMI, IBK, KUN, PE), we conclude that our specimens represent a new species, which we describe and illustrate here. Perennial herbs, with short rhizomes and crowded fibrous roots. ...
Article
Full-text available
Petrocosmea qiruniae M.Q.Han, Li Bing Zhang & Yan Liu (Gesneriaceae), a new species from Guizhou, China, is described and illustrated. It is most similar to P. leiandra (W.T.Wang) Z.J.Qiu in leaf blade shape and corolla type, especially in the colour of corolla throat and spots, indumentum of the stamens and the anther and ovary morphology. It was found on humid cliffs in an enormous limestone cave called the Qingxu Cave. In addition, Petrocosmea leiandra, based on P. martini H.Lév. var. leiandra W.T.Wang, originally published with very few descriptive data, is supplemented with more morphological data and a revised description.
... The images of specimens available in virtual herbaria including A, E, K, MO and P were also consulted. After reviewing all relevant literature (Wang 1985, Wang et al. 1990, Burtt 1998, Li and Wang 2004, Wei and Wen 2009, Gou et al. 2010, Middleton and Triboun 2010, Zhao and Shui 2010, Shaw 2011, Xu et al. 2011, Qiu et al. 2011, 2012, 2015a, 2015b, Wang et al. 2013, Zhang et al. 2013) and the specimens, we conclude that our species is morphologically distinguishable from all others and represent an undescribed species, which we describe below. ...
Article
Full-text available
Petrocosmea chrysotricha M.Q.Han, H. Jiang & Yan Liu, a new species from Yunnan, China, is described and illustrated. Petrocosmea chrysotricha was found growing with P. melanophthalma on damp marlstone cliffs in evergreen broad‐leaved forest on Mopan Shan. The new species has been grown for decades by Gesneriad enthusiasts under the name P. begoniifolia for decades and it is indeed similar to P. begoniifolia in its oblique campanulate corolla tube, but differs by having filaments covered with golden lanate indumentum in the middle part and by having primrose yellow flowers at the beginning if anthesis, then turning white.
Article
Full-text available
Plants belonging to the genus Petrocosmea are rare and small herbs difficult to find in the wild. In the present study, a new species, Petrocosmea duyunensis , from Guizhou, China, is described. The species is most similar to P. leiandra and differs from it by a distinctly recurved abaxial corolla lip, free anthers and included pistil. Detailed morphological comparisons are given. One population with about 100 mature individuals was found at the type locality. This new taxon was assessed as “Data Deficient” (DD) according to the IUCN standards.
Article
Full-text available
Petrocosmea magnifica M.Q.Han & Yan Liu, from eastern Yunnan, China, is described and illustrated. P. magnifica is most similar to P. melanophthalma in having highly reflexed backward and shortly semi-orbicular upper corolla lobes, but it differs by having leaves covered with pannose hairs on both surfaces and cordate at base.
Article
Full-text available
Petrocosmea viridis M.Q. Han & Yan Liu, a new tiny and pretty species from Guizhou, China, is described and illustrated. P. virdis was found on damp cliffs in an enormous limestone sinkhole called Dadaihe Tiankeng. It is mostly similar to P. minor in conformation of corolla. The new species differs from the latter with numerous leaves and tiny, light green corolla. In order to compare the two species more accurately, some supplementary and revised description of morphology of P. minor should be added. This article is protected by copyright. All rights reserved.
Article
Full-text available
Primulina hochiensis var. rosulata, a new endemic variety from Guangxi, China, is described and illustrated. It is similar to P. hochiensis sensu stricto, but differs in lacking stolons, the different indumentum of peduncle, corolla, filament and anthers, leaf blades elliptical to slightly ovate, calyx purple, corolla white or pink, filaments geniculate close to the base, staminodes 3, and stigmas translucent to white, obtrapeziform, 2-lobed.
Article
Full-text available
A new species, Petrocosmea hexiensis, is described and illustrated from Hexi in the Nanchuan district of Chongqing, China. The new species is similar to Petrocosmea duclouxii, but differs mainly in having a longer corolla tube and ovate-rhombic to rhombic leaves with truncated bases. Cytological and phylogenetic studies of the new species demonstrate that it has the same chromosome number as other species of Petrocosmea and that its closest relative is P. duclouxii.
Article
Full-text available
A new species of Primulina, P. chizhouensis, from Anhui, China, is described and illustrated. It is similar to P. nandanensis and P.juliae in leaf and flower shape, but can be distinguished by extraordinary short rhizomes (5-7 mm long), cymes 1-3(-10), peduncles 1.3-5 cm long, ovate bracts acuminate at apex, corolla 4-5 cm long with cylindrical tube and the lower lip to ca. 1.2 cm long, scattered glandular-pubescent filaments, the backside of the anthers bearded, and the plants forming compact dormancy buds in winter.
Article
Full-text available
Primulina guigangensis, a new species found in the limestone area of Guigang city, Guangxi, China is described and illustrated. It is most similar to Primulina yunfuensis, but can be distinguished from the latter by several distinct characters in calyx, corolla, filament, stigma and phenology. The detailed morphological characters together with illustrations, diagnostic comparisons and habitat etc. are presented.
Article
Chirita rongshuiensis Yan Liu & Y. S. Huang, a new species of Gesneriaceae from Guangxi, China, is described and illustrated. This species is similar to Chirita shouchengensis Z. Y. Li, but differs in the following characters: the surface of leaf blade strigose, corolla tube slender, corolla lobes oblong, anthers reniform, cymes 1-2 branched, 3-9-flowered, peduncle 3-7 cm long, the efflorescence is June to July.
Article
Primulina pseudomollifolia W.B. Xu & Yan Liu and P. multifida B. Pan & K.F. Chung from karst caves in Guangxi Zhuangzu Autonomous Region, China are described and illustrated as two new species. Their generic placement in the recently recircumscribed Primulina is supported by phylogenetic analyses of DNA sequence nuclear ITS and chloroplast trnF-L intron spacer regions. Primulina pseudomollifolia is similar to P. mollifolia (D. Fang & W. T. Wang) J.M. Li & Y.Z. Wang in being densely pubescent on both blade surfaces, but differs in the base of its blades being cuneate to broadly cuneate, its 12-14 mm long white to pink corolla 8-9 mm long tubular corolla tube, 5-6 mm long filaments, 3 staminodes, and flowering from July to September. Primulina multifida resembles P. renifolia (D. Fang & D. H. Qin) J. M. Li & Y. Z. Wang, but differs in the blade margins being pinnatifid; its ovate to broadly ovate bracts, 3-4 × 1.5-2 mm, 5-7 mm long tubular corolla tube, 3-5 mm long filaments, 3 staminodes, linguiform stigma, and flowering from June to August.
Article
Primulina gongchengensis Y.S. Huang & Yan Liu (Gesneriaceae) is described and illustrated as a new species from Guangxi, China. It is similar to P. macrodonta, but its leaves are densely glandular-pubescent on both surfaces, with a cuneate or broadly cuneate base and a repand or crenate margin; densely glandular-pubescent petiole and peduncle; purple corolla, with the tube ca. 1.5 cm long, 6–8 mm in diam. at the mouth; ca. 2 mm long, glabrous anthers; 3 staminodes, the lateral ones 1 mm long and the middle one 0.5 mm long; 1.5–1.8 cm long pistil; ca. 4 mm long ovary; and ca. 1 mm long stigma.
Article
Chirita ningmingensis Yan Liu & W.H. Wu, a new species of Gesneriaceae from Guangxi, China, is described and illustrated. It is similar to C. baishouensis but differs in the peduncle and pedicel glandular-pubescent, bracts broadly lanceolate, the corolla 3–3.5 cm long, outside glandular-pubescent, filaments ca. 6 mm long, anthers glabrous, staminodes 3, the pistil glandular-pubescent, stigma cordiform, and apex retuse.