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Radula deflexilobula (Radulaceae, Marchantiophyta) from Thailand, a new species based on morphological and molecular data

Chatchaba PROMMA, Li-Na ZHANG, Lei SHU, Matthew A. M. RENNER & Rui-Liang ZHU

en Cryptogamie, Bryologie 39 (4) - Pages 481-497

Published on 26 October 2018

Radula deflexilobula Promma, L.N.Zhang et R.L.Zhu is described and illustrated as a new species from Thailand. This species is distinctive in 1) the presence of dimorphic leaf lobules that are subrhombic and strongly reflexed on pendulous shoots, subquadrate and not reflexed on creeping shoots; 2) leaf lobules covering the stem ca. 1/3-1/2 of the stemwidth, not auriculate at base, and 3) leaf cells thin walled with indistinct trigones and smooth cell surface. Our phylogenetic analyses based on three chloroplast regions (trnG, trnL-F, atpB-rbcL) confirm that this new species belongs to subg. Radula and is sister to R. decurrens Mitt. known from Fiji.

Keywords :

Hepaticae, liverworts, lowland rain forests, oil body, phylogeny, Radula decurrens

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