光柱长鳞杜鹃——四川杜鹃花属一新变种(英文)

Rhododendron longesquamatum var. glabristylum (Ericaceae), a new variety from Sichuan, China

描述了四川杜鹃花属一新变种———光柱长鳞杜鹃RhododendronlongesquamatumSchneid .var.glabristylumY .Y .GengetZ .L .Zhao。该变种与原变种长鳞杜鹃R .longesquamatumSchneid .var.longesquamatum的主要区别是叶片和花较小 ,叶片及叶脉成熟后无毛或仅见零星残存毛 ,花萼仅有绒毛而无腺毛 。

Rhododendron longesquamatum var. glabristylum Y. Y. Geng et Z. L. Zhao, a new variety of the Ericaceae from Sichuan, China, is described and illustrated. This variety is different from the typical one by having smaller leaves (5 - 8 x 2 - 3.5 em) and smaller flowers (2.5 - 4 cm in diameter), the leaf blades and nerves glabrescent or only very sparsely hairy when the leaves are mature, the calyx tomentose yet not glandular hairy, and the style glabrous.