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FOC | Family List | FOC Vol. 24 | Liliaceae | Allium

69. Allium senescens Linnaeus, Sp. Pl. 1: 299. 1753.

山韭 shan jiu

Allium baicalense Willdenow; A. senescens f. albiflorum Q. S. Sun.

Bulb solitary or paired, ovate-cylindric or conical, 1--2 cm in diam., attached to a horizontal or oblique rhizome, sometimes developed above ground; outer tunic usually blackish gray or black, scarious, entire or slightly splitting. Leaves spirally arranged, never distichous, broadly linear, sometimes slightly falcate, shorter than scape, 7--10(--12) mm wide, flat, thick, smooth or minutely scabrous, apex obtuse. Scape (25--)30--60 cm, 2-angled or narrowly 2-winged, covered with leaf sheaths only at base. Spathe 2-valved, persistent, apex acuminate. Umbel hemispheric to globose, many flowered. Pedicels equal, 2--3 × as long as perianth, a few bracteolate. Perianth pink to pale red, later becoming whitish; segments subovate, 4--6(--7) × 2--2.5 mm, apex obtuse, sometimes minutely denticulate; outer ones boat-shaped. Filaments subequal, to 1.5 × as long as perianth segments, connate at base and adnate to perianth segments; outer ones subulate; inner ones narrowly triangular. Ovary globose, without concave nectaries. Style long exserted. Fl. Jul--Aug. 2 n = 16*, 32*, (40), 48.

Forests, dry stony slopes, steppes, saline meadows, gravelly places; 500--800 m. Heilongjiang, Jilin, Liaoning, Nei Mongol, N Xinjiang [Korea, Mongolia, Russia].


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