云南双盾木 yun nan shuang dun mu

Dipelta ventricosa Hemsley; D. yunnanensis var. brachycalyx Handel-Mazzetti.

Shrubs, deciduous, to 4 m tall. Branches pubescent. Petiole to 5 mm; leaf blade elliptic to lanceolate, 5-10 × 2-4 cm, abaxially white villous on midvein, ciliate along margin, adaxially sparsely pubescent, base cuneate to rounded, margin entire or rarely remotely dentate, apex acuminate to long acuminate. Ovaries with 4 bracts; 2 outer bracts larger, reniform, accrescent in fruit and not obscuring calyx at anthesis; 2 inner bracts smaller, unequal, one ovate, other smaller and narrowly elliptic. Calyx 5-lobed, pubescent; lobes divided 1/2-2/3, spreading in fruit. Corolla white to dark pink, bilabiate, 20-40 mm, very short and narrowly tubular at base; lower lip pubescent with yellow-orange reticulate markings. Ovary pubescent; style inserted, glabrous. Achene ovoid with a short neck, pubescent. Achene crowned with persistent calyx, enclosed within 2 accrescent, membranous, winglike, and reniform bracts. Fl. May-Jul, fr. Jul-Nov.

● Mixed forests, scrub; 800-2400 m. Gansu, Guizhou, Hubei, Shaanxi, Sichuan, Yunnan.