沼生繁缕 zhao sheng fan lu

Stellaria dilleniana Moench (1777), not Leers (1775); S. glauca Withering; ?S. hsinganensis Kitagawa.Stellaria dilleniana Moench (1777), not Leers (1775); S. glauca Withering; ?S. hsinganensis Kitagawa.

Herbs perennial, gray-green, glabrous. Stems tufted, erect, quadrangular, (10--)20--35 cm tall, slender, basally branched, papillose. Leaves sessile, pinkish green, linear to linear-lanceolate, 2--4.5 cm × 2--4 mm, both surfaces glabrous, midvein conspicuous and abaxially papillose, base slightly narrowed, margin papillose, apex acute. Flowers in dichotomous cymes; peduncles 7--10 cm; bracts white, lanceolate to ovate-lanceolate, (3--)5--6(--7) mm, margin membranous. Sepals 5, ovate-lanceolate, (4--)5--7 mm, abaxially with 3 conspicuous veins, margin membranous, apex acuminate. Petals 5, 4--7 mm, subequaling or slightly longer than sepals, 2-cleft nearly to base; lobes nearly linear, apex obtuse. Stamens 10, slightly shorter than sepals. Ovary ovoid; styles 3, filiform, ca. 3 mm. Capsule ovoid-cylindric, subequaling or slightly longer than persistent sepals. Seeds numerous, black-brown, suborbicular, conspicuously rugulose. 2n = ca. 100, ca. 130, 174--188.

Grassland slopes, sparse valley forests; 1000--3600 m. Gansu, Hebei, Heilongjiang, Henan, Liaoning, Nei Mongol, Shandong, Shaanxi, Shanxi, Sichuan, Yunnan [Afghanistan, Japan, Kazakhstan, Mongolia, Russia; SW Asia, Europe].