神农架唇柱苣苔 shen nong jia chun zhu ju tai

Deltocheilos tenuitubum W. T. Wang, Bull. Bot. Res., Harbin 1(3): 40. 1981; Chirita shennungjiaensis W. T. Wang.

Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 3-9 X 1-1.2 mm; leaf blade ovate to suborbicular, 1-3.2 X 0.8-2.5 cm, papery, appressed pubescent to appressed pilose, eglandular, base broadly cuneate to nearly truncate, margin entire to repand-crenate, apex acute to rounded; lateral veins ca. 3 on each side of midrib, inconspicuous. Cymes 1-3-flowered; peduncle 0.6-1.4 cm, densely spreading pilose; bracts 2, free, narrowly triangular to lanceolate, 0.8-3 X 0.3-1 mm, puberulent to pilose, margin entire, apex acute. Pedicel 2-5.5 mm, densely spreading puberulent to pilose. Calyx 5-sect from base; segments equal, linear to narrowly triangular, 4.5-5.5 X 0.8-1.2 mm, outside puberulent to pilose, inside glabrous, margin entire, apex acute to obtuse. Corolla purple, 2-2.5 cm, outside sparsely puberulent, inside puberulent below abaxial lip; tube cylindric, 1.3-1.8 cm X 2-5 mm; adaxial lip ca. 4 mm; abaxial lip 5-7.5 mm. Filaments 4.5-5.5 mm, glabrous; anthers fused by entire adaxial surfaces, 1.5-2 mm, glabrous; staminodes 2, 0.5-0.8 mm. Pistil 1.9-2.2 cm, puberulent; ovary 3.2-6 mm. Stigma obdeltoid, 1.5-3.5 mm, 2-parted. Capsule erect, 2-2.8 mm. Fl. Mar-May.

* Rocky crevices, cliffs in forests; 300-1000 m. Guizhou, W Hubei, W Hunan, SE Sichuan.