Primula calderiana I. B. Balf. & R. E. Cooper, Notes Roy. Bot. Gard. Edinburgh 9: 7 (1915) (syn: Primula dianae Balf.f. & R.E.Cooper; Primula gammieana King ex Balf.f.; Primula laeta W.W.Sm.; Primula roylei (Watt) Balf.f. & W.W.Sm.);
Central & E. Himalaya to S. Tibet: East Himalaya, Nepal, Tibet as per POWO;
Common name: Purple Golden-Eyed Primrose

Deciduous herb with winter resting bud. Bud scales persistent at flowering, ovate, yellow farinose. Leaves oblanceolate or spathulate, 5-30 x 1-6cm, obtuse to acute, base tapering to winged petiole, margin crenate-denticulate, weakly farinose beneath. Peduncle 7-28cm at flowering, farinose near apex, bearing an umbel of 5-25 flowers; pedicels 0.5-3.5cm, farinose; bracts lanceolate 5-10mm, farinose. Calyx campanulate, 5-10mm, cut to middle into lanceolate bluntish teeth, farinose. Corolla purple (white in forma alba), with yellow eye, tube 8-14mm, limb 1.5-3cm diameter, lobes obcordate, emarginate. Capsule globose, included within calyx.
Fl. May-August
Clearings and streamsides in Abies forest and in damp alpine meadows.
(Attributions: A.C.J Grierson & D.G Long. Flora of Bhutan. Published by RBGE and RGoB. 1999 as per Bhutan Biodiversity Portal)

Primula calderiana from Sikkim: 2 images.
Primula calderiana photographed from beyond Tsomgo Lake, Sikkim





POWO  Catalogue of Life  World Flora Online  BSI Flora of India (Arunachal Pradesh, Sikkim, West Bengal) Flora of China   Annotated checklist of Flowering plants of Nepal  Flowers of India  Bhutan Biodiversity Portal  IBIS Flora  Primula world  frustratedgardener  alpinegardensociety
Primula calderiana subsp. bawaii (Primulaceae): A new subspecies from Arunachal Pradesh, India– June 2016 Phytotaxa 265(1):67- AMAL BAWRI, PADMA RAJ GAJUREL & MOHAMMED LATIF KHAN

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