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FOC | Family List | FOC Vol. 19 | Acanthaceae | Strobilanthes

30. Strobilanthes cyclus C. B. Clarke ex W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 10: 192. 1918.

环毛马蓝 huan mao ma lan

Subshrubs 40-60 cm tall, isophyllous, whole plant with hispid trichomes. Stems erect or suberect, with whitish multicellular trichomes. Petiole 2-5 mm, densely pilose; leaf blade broadly ovate to suborbicular, 2.5-5.5 × 2-4.5 cm, abaxially pale green and hirsute along veins, adaxially dark green, densely hirsute, and with prominent linear cystoliths, secondary veins 4 or 5 on each side of midvein, base broadly cuneate to subrounded, margin crenate to sometimes subentire, apex rounded to acute. Inflorescences axillary or terminal, capitate spikes, 1-3 cm, shortly pedunculate; bracts narrowly oblong-elliptic, 10-12 × 5-6 mm, densely pilose; bracteoles oblong, ca. 7 × 2 mm, densely pilose on apical half, apex obtuse. Calyx ca. 7 mm, outside pilose, weakly 2-lipped; lobes linear-oblong; lower 2 lobes distinct to base; upper 3 lobes fused in their basal half, with central lobe slightly longer. Corolla blue, 2-2.5 cm, substraight, outside glabrous except for pubescence on lobes, inside glabrous except for trichomes retaining style; tube basally cylindric and ca. 2 mm wide for ca. 1.2 cm then gradually widened to ca. 1 cm at mouth; lobes suborbicular, ca. 5 mm in diam. Stamens 4; filaments glabrous, shorter pair ca. 3 mm and included, longer pair ca. 5 mm and exserted; anther thecae oblong, ca. 2.2 × 1.3 mm; pollen type 17. Ovary comose; style ca. 2 cm. Capsule ellipsoid, ca. 7 × 3.5 mm, pilose at tip, 2-seeded with basal retinacula sterile. Seeds ovate to suborbicular in outline, ca. 1 mm, flattened, pubescent; areola small but prominent. Fl. Aug.

● Forests; 1800-2300 m. Yunnan.


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