- Scientific Name: Hylodesmum oldhamii (Oliv.) H.Ohashi & R.R.Mill
- Ref: Edinburgh J. Bot. 57:180. 2000
- Synonyms: Desmodium oldhamii Oliv.; Hylodesmum oldhamii f. album (T.B.Lee) H.Ohashi & K.Ohashi; Meibomia oldhamii (Oliv.) Kuntze; Podocarpium oldhamii (Oliv.) Y.C.Yang & P.H.Huang
- English Common Name: Oldham’s ticktrefoil
- Chinese Common Name: 羽叶长柄山蚂蝗 yǔyè chángbǐng shān∙mǎhuáng, 羽叶山蚂蝗 yǔyè shān∙mǎhuáng, 羽叶山绿豆 yǔyè shān∙lǜdòu
- Japanese Common Name: フジカンゾウ [藤甘草] fujikanzō
- Family: Fabaceae
- Genus: Hylodesmum
- Distribution: Forests on mountain slopes, streamsides, thickets, rocky places; 100-1700 m. Anhui, Fujian, ?Guangdong, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Jilin, Liaoning, Shaanxi, Sichuan, Zhejiang [Japan, Korea, Russia (Far East)].
- Photo: 08/14/2010, Qingliang Peak, Zhejiang
Herbs, perennial, 50-150 cm tall. Stems glabrescent. Leaves 5-7-foliolate; petiole ca. 6 cm, pubescent; leaflet blade lanceolate, oblong, or ovate-elliptic, 6-15 × 3-5 cm, both surfaces sparsely pubescent, base cuneate or obtuse, apex acuminate. Racemes simple or shortly branched at lowermost part, to 40 cm, uncinate pubescent and yellow pubescent, laxly flowered. Pedicel 4-6 mm, elongated to 6-11 mm at fruiting. Calyx 2.5-3 mm; upper lobes distinctly 2-toothed at apex. Corolla purplish red, ca. 7 mm; standard broadly elliptic; wings and keel narrowly elliptic, base shortly clawed. Stamens monadelphous. Ovary linear, stipitate. Legume flat, uncinate pubescent, mostly 2-jointed, rarely 1- or 3-jointed; articles obliquely triangular, 1-1.5 cm × 5-7 mm. Seeds ca. 9 × 5 mm. Fl. Aug-Sep, fr. Sep-Oct. 2n = 22. (Flora of China)
