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Petrocodon vietnamensis sp. nov. (Gesneriaceae) from karst caves in northern Vietnam
Author(s) -
Xin ZiBing,
Do Truong Van,
Fu LongFei,
Huang ZhangJie,
Maciejewski Stephen,
Wen Fang
Publication year - 2021
Publication title -
nordic journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.333
H-Index - 33
eISSN - 1756-1051
pISSN - 0107-055X
DOI - 10.1111/njb.02996
Subject(s) - biology , calyx , gesneriaceae , karst , botany , white (mutation) , peduncle (anatomy) , cave , key (lock) , gynoecium , ecology , stamen , pollen , paleontology , biochemistry , gene
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.