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| Petrocodon vietnamensis Z.B.Xin, T.V.Do & F.Wen, in Xin, Do, Fu, Huang, Maciejewski et Wen, 2021. DOI: 10.1111/njb.02996 |
Abstract
Petrocodon vietnamensis, a new species from karst cave in north Vietnam is described and illustrated. It is morphologically close to P. bonii, but can be distinguished from the latter by having a green, 3–6 cm long peduncle; green, ca 5 mm long calyx lobes; narrow infundibuliform, a 1.1–1.2 cm long corolla tube; ovate abaxial lip lobes; pink to white, 9.5–10.5 mm long filaments; lateral staminodes adnate to ca 12 mm above the corolla base; densely white glandular‐puberulent pistil; a pink to white, 5.5–7.5 mm long style; a white stigma, and a 2–3 cm long capsule. Information on ecology, phenology, preliminary conservation assessment of the new species and a key for the taxonomic identification of Petrocodon species in Vietnam are also provided.
Keywords: cave-dwelling, Didymocarpoideae, Flora of Vietnam, limestone, flora, taxonomy
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| Petrocodon vietnamensis sp. nov. (A) plant in bloom, (B) adaxial surfaces of leaf blades and petioles, (C) abaxial surfaces of leaf blades and petioles, (D) cymes, (E) top view of corolla, (F) lateral view of corolla, (G) pistil, (H) opened corolla, (I) calyx lobes (two adaxial surfaces on the left; three abaxial surfaces on the right), (J) mature infructescence (Photographs by F. Wen). |
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| Petrocodon vietnamensis sp. nov. (A-B) habitat in Kho Muong cave, (C) plant in bloom, (D) cyme (Photographs by F. Wen). |
Petrocodon vietnamensis Z.B.Xin, T.V.Do & F.Wen, sp. nov.
Zi‐Bing Xin, Truong Van Do, Long‐Fei Fu, Zhang‐Jie Huang, Stephen Maciejewski and Fang Wen. 2021. 2021. Petrocodon vietnamensis sp. nov. (Gesneriaceae) from Karst Caves in northern Vietnam. Nordic Journal of Botany. DOI: 10.1111/njb.02996
