Description from Flora of China
Hoya yuennanensis Handel-Mazzetti.
Plants pubescent except for corolla exterior. Stems to 1.5 m, slender. Petiole 3-15 mm, stout; leaf blade elliptic, oblong, or elliptic-lanceolate, rarely suborbicular, (3-)5.5-19 × 1.5-4 cm, leathery when dry, base cuneate to rounded, apex short acuminate to obtuse; lateral veins 4-7 pairs. Pseudumbels extra-axillary, globose, to 9 cm, many flowered; peduncle drooping, to 10 cm. Pedicel 2-3 cm. Sepals 2-2.5 × 1.2-1.4 mm. Corolla white, ca. 1 cm wide, glabrous outside; tube ca. 3 mm; lobes triangular, 6-8 × 4-7 mm at base, margin recurved but not reflexed. Corona lobes ca. 3 × 3 mm, stellate spreading, outer angle broadly rounded, margin pouched, middle concave, inner end acute, margin strongly recurved at back and both ends meeting at middle. Stigma head at same level as inner corona lobes. Fl. Sep-Dec.
The leaves are used for the treatment of rheumatoid arthritis and traumatic injury.
* On rocks in dense forests; 0-1000 m. Guangxi, Guizhou, Sichuan, Yunnan