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FOC | Family List | FOC Vol. 16 | Convolvulaceae | Merremia

9. Merremia sibirica (Linnaeus) H. Hallier, Bot. Jahrb. Syst. 16: 552. 1893.

北鱼黄草 bei yu huang cao

Herbs twining, subglabrous. Stems striate. Petiole 2-7 cm; leaf blade ovate-cordate, 3-13 X 1.7-7.5 cm, base cordate, margin entire or undulate, apex attenuate-acuminate or caudate. Inflorescences (1-)3-7(-20)-flowered; peduncle often shorter than petiole, 1-6.5 cm, angular or narrowly winged; bracts linear, small. Pedicel 3-15 mm, thicker distally. Sepals elliptic, subequal, 5-7 mm, glabrous, distinctly subulate-mucronate. Corolla pink, pale purplish, or occasionally white, campanulate, 1.2-1.9 cm, glabrous; limb 5-lobed, lobes deltate or nearly circular. Stamens included; anthers not twisted. Ovary glabrous. Capsule ± globose, broadly ovoid, or conical-ovoid, 5-14 mm, apex rounded or acute. Seeds ellipsoid-trigonous or oblong-trigonous, 3-8 mm, glabrous, puberulent, scurfy-scaly, or with swollen-based hairs, apex obtuse or acute.

Roadsides, open sunny places; 600-2900 m. Anhui, Gansu, NW Guangxi, Guizhou, Hebei, Hunan, Jiangsu, Jilin, Liaoning, Shaanxi, Shandong, Shanxi, Sichuan, Yunnan, Zhejiang [Mongolia, NE Russia]

1 Seeds glabrous; capsule broadly ovoid or subglobose.   (2)
+ Seeds with indumentum; capsule conical-ovoid.   (3)
2 (1) Seeds 3-4 mm; capsule subglobose, apex rounded   9a var. sibirica
+ Seeds 4-7 mm; capsule broadly ovoid, apex acute   9b var. macrosperma
3 (1) Seeds 6-8 mm, densely covered by swollen-based hairs; capsule 0.9-1.4 cm high; corolla pink   9c var. vesiculosa
+ Seeds 3-4 mm, whitish puberulent or ± densely scaly; capsule mostly smaller; corolla white or pale purplish.   (4)
4 (3) Seeds densely scurfy-scaly; corolla often white   9d var. trichosperma
+ Seeds densely whitish puberulent; corolla pale purplish   9e var. jiuhuaensis

Lower Taxa


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