Plaubelia Bridel, 1826

Asthana, A. K. & Srivastava, Ankita, 2018, A new species of Plaubelia Bridel (Pottiaceae, Bryophyta) from India, Phytotaxa 374 (4), pp. 297-300 : 299

Key to the species of genus Plaubelia Bridel

1. Plants single rosulate, costa in cross section with 2(–3) guide cells adaxially...................................................................................2

1. Plants with or without intermittent rosettes at definite intervals, costa in cross section with usually more than 3 guide cells.........3

2. Plants 1–2 mm long, leaves short spathulate, cucullate at apex...................................................................................... P. burmensis

2. Plants 2.5–3.5 mm long, leaves long spathulate not cucullate at apex................................................................................ P. involuta

3. Gemmae present, plants with intermittent rosette at definite interval, leaves spathulate to oblong, leaf margin crenulate from apex to base................................................................................................................................................................................ P. khasiana

3. Gemmae absent, plants single rosulate, leaves narrowly lingulate-spathulate or broadly spathulate, leaf margin entire..................4

4. Leaves narrowly lingulate to spathulate, adaxial distal laminal cells mamillose but smooth on both surfaces, costa percurrent to shortly excurrent...................................................................................................................................... P. sprengelii var. sprengellii

4. Leaves broadly spathulate, adaxial distal laminal cells mamillose but papillose abaxially or on both surfaces, costa percurrent or ending below leaf apex...................................................................................................................... P. sprengellii var. stomatodonta