Parakaempferia alba, a new species of Zingiberaceae from East Siang district of Arunachal Pradesh, India is herein described. A detailed taxonomic description, diagnosis, color photoplate, distribution map, notes on habitat and ecology, conservation status, and a table of comparisons with the closely related species Parakaempferai synantha Rao & Verma are provided. This new species differs, inter alia, from P. synantha by its leaf characters, number of spikes, length of peduncle, number of bracts as well as their shape and size, bracteole shape and size, staminode shape and color, labellum shape and color of apical margin, anther size and color, filament size, style size, ovary shape, and by presence of two linear shaped glands attached to the ovary.
MIBANG et al. (Wed,) studied this question.
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