Rhododendron kaempferi

A loose, upright shrub. Hemidecideous and with dimorphic leaves, larger spring leaves and smaller summer leaves. Hardy. Branchlets, petioles and pedicels covered by ligulate, adpressed setae with rugged tips. Leaf upper side evenly covered by bristles extending from warty papillae. Bristles on leaf margin too. Leaf lower side with scattered bristles, more densely concentrated along veins. With mucron. Calyx with partly unfolded, lingulate, hairy lobes. Corolla funnel-shaped, salmond-red to orange with blotch. Ovary conical, densely covered by setae. Stamens 5 (6), proximally finely pubescent. Style glabrous, with upward bending, swollen, yellowish stigma. Capsule densely covered by setae. Seeds 1.3 – 1.6 mm long, with very small floating sacs. Occurrence: Japan – Hokkaido, Honshu, Shikoku, Kyushu according to Treeflower.la.coocan.jp.