Caltha scaposa Hook. fil. & Thomson, Fl. Ind. 1: 40 (1855) (syn: Caltha palustris var. scaposa Maxim.; Caltha scaposa var. parnassioides Ulbr.; Caltha scaposa var. smithii Ulbr.);
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Central & E. Himalaya to W. & Central China: China North-Central, China South-Central, East Himalaya, Nepal, Qinghai, Tibet as per POWO;
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Caltha scaposa from Sikkim: 2 images.
Caltha scaposa found growing much beyond Tsomgo lake, Sikkim, in June.
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References:
POWO Catalogue of Life Flora of China FOC illustration Annotated checklist of Flowering plants of Nepal