Glochidion shanense a new species from Myanmar

Based on morphological studies performed on live plants in the field and specimens deposited in herbaria, a new species, Glochidion shanense was founded.

Glochidion J.R. et G. Forst. is the second largest genus in the tribe Phyllantheae Du-mortier, Phyllanthaceae Martynov. It consists of more than 300 species mainly distributed in the Indo-Pacific, east to southeast Polynesia and south into Australia and can be distinguished from other members in Phyllantheae by the absence of a floral disc, apiculate anthers, usually confluent styles and fleshy seed-coat.

During the fieldwork in Shan State, eastern Myanmar, in December 2015, two of the authors (J. Cai and X.F. Yang) collected some Phyllantheae specimens and one belongs to Glochidion, which superficially differs from congeneric taxa recorded in Myanmar and its adjacent countries. 

Based on morphological studies performed on live plants in the field and specimens deposited in herbaria, a new species, Glochidion shanense Gang Yao & Shixiao Luo (Phyllantheae, Phyllanthaceae), is here described and illustrated. The species is morphologically most similar to G. ellipticum Wight, but can be distinguished from the latter by having hairy branchlets, longer pedicels, uniseriate and narrowly triangular sepals of female flowers, 4–5-locular ovaries, stout and cylindric persistent style on fruits.

This research was financially supported by a project of the Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences (Grant No. Y4ZK111B01). And published as " Taxonomic studies of Glochidion (Phyllanthaceae) from the Indo-China Peninsula (I): G. shanense, a new species from Myanmar "on PhytoKeys.

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Morphological comparisons between Glochidion ellipticum Wight (B, C, E, H) and G. shanense Gang Yao & Shixiao Luo (A, D, F, G). A, B, D, E Female flower C, F Branchlets G, H Fruit.