A number of Indian liverworts are only poorly known in country’s bryoflora with apparently no representation in Indian herbaria. Two such species, viz. Horikawaella subacuta (Herzog) S.Hatt. & Amakawa – an Himalayan endemic, and Pleurozia purpurea Lindb., widespread in North America, Europe and Southeast Asia, have been described and illustrated here based on recently collected specimens from Arunachal Pradesh in the Eastern Himalaya.
Plagiochila parvivittata Inoue var. siangensis var. nov. is described from West Siang district in Arunachal Pradesh, Eastern Himalaya, India. The new taxon differs from the typical variety in larger length/breadth ratio of leaves with fewer marginal teeth, (0-) 2-3 teeth along the dorsal margin of leaves near apex, terminal cell of marginal teeth 4-12 (-18) times longer than wide and a very distinct vitta area with the cells measuring 75-114 × 15-21 μm in size.
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