Sunday, October 30, 2022

[Botany • 2022] Primula surculosa (Primulaceae) • A New Species from Yunnan, China


Primula surculosa Y.Xu & G.Hao,

in Xu, He, Yang et Hao, 2022.
Photographed by De-Ming He.

Abstract
A new species, Primula surculosa, is described and illustrated. In gross morphology, it is clearly allied to section Petiolares and is most similar to P. taliensis from the group Taliensis, but is distinctive in its indumentum in the throat of the corolla tube, and the markedly stoloniferous habit.

Keywords: morphological characteristics, new species, Primula taliensis, taxonomy, Yunnan

Primula surculosa sp. nov.
 A stolon B habit C leaf on abaxial surface (fruiting time) D outer leaf on abaxial surface (anthesis) E inner leaf on adaxial surface (anthesis) F capsule with persistent calyx G long and short-styled flowers H bract I calyx (dissected) J multicellular hairs.
Drawn by Yun-Xiao Liu.

Living plant of Primula surculosa sp. nov.
A, B habitat C habit (blooming) D long and short-styled flowers, also showing pilose corolla tube (the circular image) E outer and inner leaves on adaxial surfaces, showing indumentum, venation, and margin shapes F inflorescence G calyx (dissected) H bracts I capsule with persistent calyx J capsule (crumbling) K habit (stoloniferous after anthesis)
Photographed by De-Ming He.

 Primula surculosa Y.Xu & G.Hao, sp. nov.
 
Diagnosis: Primula surculosa is morphologically most similar to Ptaliensis, but is distinctive in its indumentum in the throat of the corolla tube, and the markedly stoloniferous habit.

Etymology: The specific epithet “surculosa” refers to the remarkable root-suckers (stolons), with long slender internodes and reduced leaves arising after anthesis.

    


Yuan Xu, De-Ming He, Lin-Zhong Yang and Gang Hao. 2022. Primula surculosa (Primulaceae), A New Species from Yunnan, China. PhytoKeys. 212: 29-35. DOI: 10.3897/phytokeys.212.91133