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. 2020 Aug 26:157:199-206.
doi: 10.3897/phytokeys.157.32683. eCollection 2020.

Deinostigma fasciculatum, a new species of Gesneriaceae in Yunnan, China

Yu-Min Shui  1 , Jian-Yong Wu  2 , Zhi-Yong Yu  3 , Shi-Wei Guo  1   4   5 , Li Chen  1   6   4 , Fang Wen  7 , Wen-Hong Chen  1   4
Affiliations

Deinostigma fasciculatum, a new species of Gesneriaceae in Yunnan, China

Yu-Min Shui et al. PhytoKeys. .

Abstract

A new species of Deinostigma (Gesneriaceae) from Yunnan, China, Deinostigma fasciculatum W.H.Chen & Y.M.Shui, sp. nov., has been discovered and described. In the genus, the new species is similar to D. cicatricosum (W.T. Wang) D.J. Middleton & Mich. Möller and D. cyrtocarpum (D. Fang & L. Zeng) Mich. Möller & H.J. Atkins in dark purple flowers and falcate fruit, but differs from them mainly in the inflorescences with fasciculate flowers, calyx lobes (reflexed, narrowly lanceolate and 1.2-1.3 cm long), corolla tubes (sharply contracted below middle and white outside and below throat). The above three species grow nearby non-limestone wet cliffs and geographically isolated with different distributions (the new species in Southeast Yunnan, D. cicatricosum in Eastern Guangxi and D. cyrtocarpum in Southern Guangxi and Guangdong, China).

Keywords: Deinostigma cicatricosum; Deinostigma cyrtocarpum; Sino-Vietnamese border; Yunnan; new species.

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Figures

Figure 1.
Figure 1.
The distribution of Deinostigma fasciculatum W.H.Chen & Y.M.Shui, sp. nov. (■), with D. cicatricosum (W.T.Wang) D.J.Middleton & Mich.Möller (●) and D. cyrtocarpum (D.Fang & L.Zeng) Mich.Möller & H.J.Atkins (▲).
Figure 2.
Figure 2.
Deinostigma fasciculatum W.H.Chen & Y.M.Shui, sp. nov. A habit B mature fruits C frontal view of flower D leaf abaxial side E top and back view of flowers F top view of opened corolla showing the interior surface of corolla tube, stamens and staminodes G pistil and calyx, arrow showing the calyx H ovary, calyx and bract. (b = bract, c = calyx, d = disc).
Figure 3.
Figure 3.
Photographs of Deinostigma cicatricosum (W.T. Wang) D.J. Middleton & Mich. Möller (A–H) and D. cyrtocarpum (D. Fang & L. Zeng) Mich. Möller & H.J. Atkins (I & J) A habit B adaxial surface of leaf C frontal view of flower D top view of flower E opened corolla showing the interior surface of corolla tube, stamens and staminodes, arrows showing the staminodes F stamens and staminodes, arrows showing the staminodes G pistil and calyx H bract and young flower I inflorescence of D. cyrtocarpumJ lateral view of inflorescence (b = bract, c = calyx, d = disc).
See this image and copyright information in PMC

References

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