August 6, 2025

Primula indica (Primulaceae), a new species from Dibang Valley of Arunachal Pradesh, India

Key Points

MAIN FINDING: The new species primula indica is identified in Dibang Valley, differing significantly from primula vilmoriniana.
KEY EVIDENCE: Primula indica has unique traits such as a small petiole, large calyx, and large homostylous flowers.
APPROACH: The species was discovered in Mayodiya paas, with its characteristics illustrated for proper identification.
SIGNIFICANCE: Assigning the species as Data Deficient highlights the need for conservation assessment in its native habitat.

Abstract

A new species Primula indica is found from Mayodiya paas area of Dibang Valley of Arunachal Pradesh is described and illustrated. It resembles to Primula vilmoriniana Petitm. which is belonging to the section Obconicolisteri but, differs in having small petiole, few flowered, calyx large, homostylous (vs. heterostylous), pedicel small, corolla lobe broadly obovate and quite large, corolla tube large, style large 8 mm (vs. small ca. 4 mm). The new species is preliminarily assigned as Data Deficient (DD) following the IUCN (2022) guidelines.

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