No.22 Bin Yang, Hong-Bo Ding, Kai-Cong Fu, Yi-Kai Yuan, Han-Yu Yang, Jian-Wu Li, Li-Xia Zhang, Yun-Hong Tan

Four new species of Gesneriaceae from Yunnan, Southwest China

PhytoKeys 2019(130): 183–203

Abstract

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.

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Figure 1. Petrocosmea rhombifolia Y.H.Tan & H.B.Ding, sp. nov. A, B Habit C, D flower in front view E flower in side view F flower in back view G flower H dissected corolla (showing pistil and stamens) I cyme J calyx in abaxial view K leaves. Photographed by H.B. Ding.

Figure 2. Petrocosmea rhombifolia Y.H.Tan & H.B.Ding, sp. nov. A Habit B calyx in adaxial view C leaf blade in abaxial view D pedicel with calyx and pistil E anthers F corolla in front view G dissected corolla.Drawn by Zhen-Meng Yang.

Figure 3. Petrocosmea tsaii Y.H.Tan & JianW.Li, sp. nov. A, B Habit C leaves D, E inflorescence F flower in front view G flower in back view H flower in side view I dissected flower J calyx in abaxial view K pistil L stamens. Photographed by J.W.Li, Y.H.Tan & H.B.Ding.

Figure 4. Petrocosmea tsaii Y.H.Tan & JianW.Li, sp. nov. A Habit B adaxial Leaf surface indumentum C corolla (Dissected) D pedicel with bracteoles, calyx and pistil E pistil F stamens. Drawn by Zhengmeng Yang.

Figure 5. Didymocarpus brevipedunculatus Y.H.Tan & Bin Yang, sp. nov. A, B Habit C, D inflorescence E flowers F young capsules G dissected calyx H dissected corolla I bracts J bracteoles. Photographed by Y.H. Tan.

Figure 6. Didymocarpus brevipedunculatus Y.H.Tan, sp. nov. A Habit B leaf base in abaxial view C  inflorescence D bract in abaxial view E bracteole F flower in front view G dissected corolla H stamens I young capsule J calyx K pistil L stigma. Drawn by Yun-xi Zhu.

Figure 7. Henckelia xinpingensis Y.H.Tan & Bin Yang, sp. nov. A, B, D Habit C habit (showing stolons) E flower in side view F flower in front view G dissected flower. Photographed by B.Yang.

Figure 8. Henckelia xinpingensis Y.H.Tan & Bin Yang, sp. nov. A Habit B calyx lobes C corolla (Dissected) D pedicel with pistil. Drawn by Zheng-meng Yang.

Figure 9. Henckelia xinpingensis Y.H.Tan & Bin Yang, sp. nov. (A–D) A, B Habit C flower (side view) D flower (front view); Henckelia pumila (D. Don) A. Dietr. (E–H) E, F habit G, H flower (front view). Photographed by H.B. Ding.