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

4. Cystacanthus yunnanensis W. W. Smith, Notes Roy. Bot. Gard. Edinburgh. 9: 104. 1916.

滇鳔冠花 dian biao guan hua

Shrubs 1-1.5 m tall, erect. Stems subterete or slightly 4-angled, densely whitish or yellowish brown villous. Petiole 0.5-1.5 cm; leaf blade ovate to ovate-lanceolate, 5-10 × 3-4 cm, abaxially white villous, adaxially densely yellowish villous, secondary veins ca. 6 on each side of midvein, base attenuate, margin entire, apex acuminate to acute. Thyrses paniculate, to 15 cm; bracts linear-lanceolate, 5-10 mm, densely gland-tipped villous; bracteoles similar to bracts. Pedicel 1-2 mm, gland-tipped villous. Calyx ca. 1.5 cm, outside densely gland-tipped villous, inside slightly villous; lobes linear, ca. 13 × 2 mm, subequal, apex acute. Corolla white or purplish blue and with a whitish base, 3-3.5 cm, ventricose, incurved, outside gland-tipped pubescent; tube basally ca. 1.5 mm wide and very short then wide at middle; lobes orbicular, ca. 10 × 7 mm, unequal with anterior one longer. Stamens 2; filaments ca. 1.5 cm, basally pilose; anther thecae oblong, ca. 6 mm, connective barbate; staminodes filiform, ca. 2 mm. Ovary ca. 4 mm, villous, with 6 ovules per locule; style ca. 2 mm, sparsely villous; stigma minutely 2-dentate. Capsule ca. 3.5 cm, ca. 5 mm wide, gland-tipped villous. Seeds disciform, 2-3 × 2-3 mm, puberulent.

● Forests; 800-1600 m. Yunnan.


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