Riccia stenophylla Spruce (Ricciaceae: Marchantiophyta) - a new report for Asia from the Western Ghats of India Author Athira, S. 0000-0001-6624-8867 athirasjck6330@gmail.com Author Daniels, A. E. D. 0000-0001-8955-2204 dulipdaniels@gmail.com text Phytotaxa 2022 2022-10-18 568 3 277 282 http://dx.doi.org/10.11646/phytotaxa.568.3.4 journal article 169758 10.11646/phytotaxa.568.3.4 5b8f11fe-1f67-4e57-9aeb-32de4fb6e54a 1179-3163 7223636 Key to the species 1a. Thallus spongy, with faint reticulate pattern to smooth dorsally, broadly acute to truncate at apex, monoicous in sexuality ....... 2 1b. Thallus not spongy, with distinct reticulate pattern dorsally, broadly truncate at apex, dioicous in sexuality ................. R. fluitans 2a. Ventral scales both simple and bifid or only bifid ............................................................................................................................ 3 2b. Ventral scales always simple ...................................................................................................................................... R. stenophylla 3a. Ventral scales bifid with a median appendage ........................................................................................................... R. canaliculata 3b. Ventral scales both simple and bifid, without a median appendage .................................................................................... R. stricta