5. Veronicastrum latifolium (Hemsley) T. Yamazaki, J. Fac. Sci. Univ. Tokyo, Sect. 3, Bot. 7: 130. 1957.
宽叶腹水草 kuan ye fu shui cao
Calorhabdos latifolia Hemsley in F. B. Forbes & Hemsley, J. Linn. Soc., Bot. 26: 196. 1890.
Stems more than 1 m, apically arching and rooting, terete, apically narrowly angular, usually with yellow, short curly hairs, rarely glabrous. Leaves alternate; petiole short; leaf blade ovate-orbicular to orbicular, 4-7 X 2-5 cm, usually sparsely hispidulous, rarely glabrous, base rounded, truncate, or broadly cuneate, margin deltoid dentate, apex short acuminate. Inflorescences axillary, rarely also terminal, 1.5-4 cm; bracts narrow, ciliate. Calyx lobes ciliate. Corolla pale purple or white, ca. 5 mm, straight, limb actinomorphic; lobes deltoid, less than 1 mm. Stamens conspicuously exserted; filaments hairy. Capsule ovoid, 2-3 mm. Seeds ovoid-globose, ca. 0.3 mm; seed coat reticulate. Fl. Aug-Sep.
* Forests, thickets, sometimes hanging from rocks; 300-500 m. Guizhou, Hubei, Hunan, C to E Sichuan.