台湾鼠尾草 tai wan qin zhu cao

Salvia formosana Hayata.

Plants perennial. Stems 20-50 cm, retrorse spiny-hirsute, unbranched. Stem leaves many paired; petiole 1-10 cm, retrorse spiny-hirsute; leaf blade triangular-ovate to triangular-hastate, 2-7(-9) × 1.3-6(-7) cm, minutely hispid, glandular, base hastate to subtruncate, margin irregularly dentate or serrate, apex caudate-acuminate. Inflorescences densely retrorse spiny-hirsute; verticillasters 2-6-flowered, somewhat widely spaced, in terminal racemes ca. 6 cm; bracts ovate to narrowly ovate, 6-12 mm. Pedicel 3-5 mm. Calyx campanulate, ca. 9 mm, dilated after anthesis, densely hirsute along veins, sparsely glandular, 2-lipped to ca. 1/3 its length; upper lip broadly triangular, margin entire, apex rounded. Corolla yellow with red spots, 2.2-2.4 cm, pubescent; tube transversely pilose annulate, ca. 1.3 cm; upper lip oblong, ca. 1.9 cm; lower lip almost as long as upper lip, middle lobe obcordate, lateral lobes narrowly triangular. Filaments, ca. 4 mm; connectives ca. 8 mm, upper arms ca. 5.5 mm, lower arms ca. 2.5 mm. Style much exserted. Nutlets unknown. Fl. Jul-Aug.

* Taiwan.