J. Jap. Bot. 1: 21 (1917). No type cited.
Verified by:
Shrub or small tree; young shoots villose. Leaves rhombic, 3-5 x 2-4cm, apex acute but with blunt tip, upper surface sparsely villose when young, soon glabrescent, lower surface sparsely villose, more densely so on midrib; petioles 4-7mm, densely villose. Inflorescence 1-2-flowered, flowers appearing before leaves; pedicels 3-10mm, with eglandular or glandular hairs. Calyx minute, ciliate. Corolla funnel-campanulate, rich rose-pink, 22-30mm. Stamens 10, unequal, filaments glabrous. Ovary densely villose; style stipitate-glandular in lower half. Capsule 8-15 x 4-5mm.
Japan (SE Honshu)
Mixed forest
R. glandulistylum Komatsu, Bot. Mag. (Tokyo) 32: 10 (1918)ó Japanese text. R. wadanum Makino var. leucanthum Makino, J. Jap. Bot. 3: 11 (1926)óEnglish text. Type: Japan, Prov. Sagmai, Hakone, Sawada, n.v. R. reticulatum D.Don var. wadanum (Makino) Hatusima, Sci. Rep. Yokosuka City Mus. 15: 22 (1969)
Chamberlain, D.F. & Rae, S.J. (1990) A Revision of Rhododendron IV Subgenus Tsutsusi. Edinburgh Journal of Botany 47(2):146