No.30 Yu-Min Shui, Jian-Yong Wu, Zhi-Yong Yu, Shi-Wei Guo, Li Chen,Fang Wen & Wen-Hong Chen

Deinostigma fasciculatum, a new species of Gesneriaceaein Yunnan, China

PhytoKeys 157: 199–206 (2020)

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 theinflorescences 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 newspecies in Southeast Yunnan, D. cicatricosum in Eastern Guangxi and D. cyrtocarpum in Southern Guangxiand Guangdong, China).

Original article link: https://phytokeys.pensoft.net/article/32683/

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. Deinostigma fasciculatum W.H.Chen & Y.M.Shui, sp. nov. A habit B mature fruits C frontalview of flower D leaf abaxial side E top and back view of flowers F top view of opened corolla showingthe interior surface of corolla tube, stamens and staminodes G pistil and calyx, arrow showing the calyxH ovary, calyx and bract. (b = bract, c = calyx, d = disc).

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 ofleaf C frontal view of flower D top view of flower E opened corolla showing the interior surface of corollatube, stamens and staminodes, arrows showing the staminodes F stamens and staminodes, arrows showingthe staminodes G pistil and calyx H bract and young flower I inflorescence of D. cyrtocarpum J lateral viewof inflorescence (b = bract, c = calyx, d = disc).