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| Primula himalayana B. Hajong, Harsh Singh & P. Bharali, in Hajong, Singh et Bharali, 2026. |
Abstract
Primula himalayana sp. nov., a new species of Primulaceae, is described and illustrated from Tawang, Lutrem, 4238 m a.s.l., Arunachal Pradesh, India. It grows under Juniperus and Berberis scrub forest in an alpine meadow. The new species belong in Primula section Cordifoliae and is resembling P. gambeliana, but differs from the latter by the lamina puberulent with a white protuberance on the tips of the teeth, petiole 2‒3 times longer than lamina and white puberulent, scape long with many flowers, flowers yellow with orange-yellow center and along corolla tube, corolla lobes elliptic, anther basifixed, and ovary cylindrical without any teeth.
Keywords: Arunachal Pradesh, new taxon, Primrose, Primula sect Coridfoliae, Tawang, taxonomy
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| Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov. (A) Habit, (B) leaf, (C) side view of an umbel, (D) face view of an umbel, (Ei) bract, (Eii) sepals, (F) side view of a dissected ‘pin'-eyed morphs flower, (G) side view of a dissected ‘thrum'-eyed morphs flower, (H) face view of a dissected ‘pin'-eyed morphs flower, (I) face view of a dissected ‘thrum'-eyed morphs flower, (J) white puberulent on the corolla margin, (K) stamen, (L) carpel (left ‘thrum'-eyed morphs, right ‘pin'-eyed morphs). |
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| Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov. (A–B) Habit, (C) face view of an umbel, (D) leaf; Primula gambeliana G.Watt (E) Habit, (F) face view of an umbel, (G) leaf. |
Primula himalayana B. Hajong, Harsh Singh & P. Bharali sp. nov.
Diagnosis: A new species resembling P. gambelina due the appearance of leaves and flowers, but differing in lamina puberulent with a white protuberance on the tip of each teeth (versus glabrous and without any protuberances), petiole 2‒3 times longer than lamina and white-puberulent (versus 3‒5 times longer than lamina, glabrous), scape 15‒35 cm long with 4‒17 flowers in the umbel (versus 6‒15 cm long with 2‒8 flowers), flowers yellow with an orange-yellow center and ca 1.5‒1.9 cm long corolla tube (versus bright reddish-pink or purple-pink to violet-purple with yellow center, ca 1.2 cm long), corolla lobes elliptic (versus obcordate or broadly obovate), anthers basifixed (versus dorsi-basifixed), ovary quadrate–globose without any teeth (versus globose–cylindric with 5 or more apical teeth).
Etymology: The species epithet ‘himalayana' is derived from the Great Himalaya Mountains – a biodiversity hotspot and widely considered as the geographical origin as well as the centre of diversity and distribution of Primula.
Bipankar Hajong, Harsh Singh and Pankaj Bharali. 2026. Primula himalayana sp. nov., A New Species from eastern Himalaya, India. Nordic Journal of Botany. DOI: doi.org/10.1002/njb.05052 [11 March 2026]
