Premna bhamoensis, a new species from Kachin State, northeastern Myanmar

A new species, Premna bhamoensis Y. T. Tan & B. Li (Lamiaceae) was described and illustrated from Kachin State, northeastern Myanmar.

 We describe and illustrate a new species, Premna bhamoensis Y. T. Tan & B. Li (Lami-aceae), from Myanmar. The species is most similar in morphology to P. menglaensis B. Li, but differsfrom the latter in having branchlets and petioles densely tomentose (vs. glabrousor glabrescent), leaf blades papery with minute pubescence (vs. leathery and glabrous),flowers green to greenish yellow (vs. red flowers), calyces slightly 2-lipped with fiveequal lobes (vs. calyces distinctly 2-lipped with entire or minute emarginate lips), and stamens exserted from corolla (vs. included). Xishuangbanna Tropical Botanical Garden(XTBG) introduction records showed this plant was introduced from Bhamo County, Kachin State of northeastern Myanmar in the 1980s. However, precise location data and the collection date had not been recorded. 

During the period from 2011 to 2017, we have visited Kachin State many times, but the plant was not found in this area. The specific epithet “bhamoensis” of this new species is derived from the name of the locality, Bhamo County, from where the species was originally collected. The result published as "Premna bhamoensis (Lamiaceae, Premnoideae), a new species from Kachin State, northeastern Myanmar " on  PhytoKeys

This work was supported by the Southeast Asia Biodiversity ResearchInstitute, Chinese Academy of Sciences (Y4ZK111B01), and the National Natural Science Foundationof China (grant no. 31460044).

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Figure. Morphological comparison between Premna bhamoensis (A–C) and P. menglaensis (a–c).A, a branchlets with inflorescences B, b inflorescences, flowers and calyces (in the blank circle) C, c fruitescences and fruits (arrow show fruiting calyx).