Abstract
Corydalis shiyomiensis is described as a new species from Arunachal Pradesh, India, in the Eastern Himalaya Biodiversity Hotspot. Morphologically, this species resembles Corydalis petrophila and Corydalis leptocarpa; however, it can be easily differentiated based on both vegetative and floral characters. Detailed description along with diagnosis, photo plates, morphological comparison with the allied species, notes on phenology and habitat, as well as a conservation assessment are provided herewith.
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