矮爵床 ai jue chuang

Rostellularia humilis H. S. Lo, Fl. Hainan. 3: 598. 1974, not Justicia humilis Michaux (1803).

Herbs 6-8 cm tall, diffuse, annual. Stems 4-angled, glabrous. Leaves sessile; leaf blade lanceolate to narrowly lanceolate, 1-2 × ca. 0.3 cm, glabrous, cystoliths inconspicuous, base cuneate, margin entire, apex obtuse. Spikes terminal, 2-4.5 cm, glabrous; bracts linear-lanceolate, ca. 3 mm, glabrous, margin membranous; bracteoles similar to bracts. Calyx ca. 5 mm, glabrous, 4-lobed to base; lobes linear, margin membranous, apex obtuse. Corolla not seen. Capsule ca. 6 mm, glabrous.

● Hainan.