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FOC | Family List | FOC Vol. 22 | Poaceae | Leymus

9. Leymus shanxiensis G. Zhu & S. L. Chen, Fl. China. 22: 390. 2006.

阔颖赖草 kuo ying lai cao

Replaced synonym: Leymus latiglumis L. B. Cai, Acta Phytotax. Sin. 33: 493. 1995 ["latiglumus"], not Leymus lati-glumis Tzvelev, Novosti Sist. Vyssh. Rast. 9: 62. 1972.

Culms erect, 70–110 cm tall, 2–3 mm in diam., 3- or 4-noded. Leaf sheath scabrous; ligule membranous, ca. 0.8 mm; leaf blade flat or rolled, 10–25 × 0.3–0.5 cm, abaxial surface smooth, glabrous, adaxial surface scabrous or densely pubescent. Spike erect, greenish, 8–15 × 1–1.3 cm; rachis internodes 6–11(–20) mm, densely puberulent. Spikelets usually 2 per node, 1.8–2.5 cm, with 5–9 florets; rachilla internodes 0.5–1.5 mm, densely puberulent. Glumes covering only base of lemma, lanceolate, subequal, 11–16 mm, 3–5(–7)-veined, margin membranous, ciliate, apex narrowed into awn. Lemma oblong-lanceolate, 5–7-veined, with dense, long, soft hairs; first lemma 10–12 mm; awn less than 2 mm. Palea slightly shorter than or equaling lemma, laxly setose along keels, apex emarginate. Anthers yellow, ca. 5 mm. Fl. and fr. summer.

* Grasslands; 1300–3700 m. Shanxi (Pinglu, Youyu).

Leymus latiglumis is the correct spelling of Cai's name. The original spelling "latiglumus" implies the second part of this compound epithet was intended as an adjective (agreeing with the masculine gender of Leymus), rather than a noun in apposition (which would be "lati-gluma").

A superfluous new name Leymus dilatatus L. B. Cai & L. Zhi (Bull. Bot. Res., Harbin 27(6): 654. 2007) appeared after publication of the family treatment for the Flora of China.


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