Rhododendron mekongense var. longipilosum
R. mekongense var. longipilosum har stive hår på undersiden af bladet på hovednerven.
Flora of China
Rhododendron trichocladum Franchet var. longipilosum Cowan, Notes Roy. Bot. Gard. Edinburgh 19: 186. 1936.
Leaf blade adaxially densely long-setose. Fl. Jun–Jul.
Thickets, scrub, slopes; 3000–4000 m. S Xizang, NW Yunnan [NE Myanmar].
It may be better to treat var. longipilosum as a variety or subspecies of R. trichocladum, as originally described. The bristles then fit. On the type, the scales are subequal on the abaxial surface of the leaf blades.
ARS
Flora of China
RBGE Herbarium; var. mekongense
RBGE Herbarium; chloranthum
RBGE Herbarium; semilunatum
RBGE Herbarium; var. melinanthum
RBGE Herbarium; var. rubrolineatum