大叶章Deyeuxia langsdorffii (Link) Kunth

别名：紫野青茅;紫花野青茅;

科名：禾本科 Gramineae

属名：野青茅属 Deyeuxia

《中国植物志》第9(3)卷221页
  40．大叶章（大兴安岭植物群落）图版54：8-10
  Deyeuxia langsdorffii (Link) Kunth Rev. Gram.1: 77. 1829;禾本科图说518. 图494. 1959;中国高等植物图鉴5: 107图7043. 1976. ——Arundo langsdorffii Link, Enum. Fl. Hort. Berol. 1: 77. 1812. ——Calamagrostis langsdorffii (Link) Trin. Gram. unifl. 225. pl. 4. f. 10. 1824.
  多年生，具横走根状茎。秆直立，平滑无毛，高90-150厘米，径1-4毫米，通常具分枝。叶鞘多短于节间，平滑无毛；叶舌长圆形，长6-10毫米，先端钝或易破碎；叶片线形，扁平，长15-30厘米，宽3-8毫米，两面稍糙涩。圆锥花序疏松开展，近于金字塔形，长10-20厘米，宽5-10厘米，分枝细弱，粗糙，开展或上升，长2-8厘米，中部以下常裸露；小穗长4-5毫米，黄绿色带紫色或成熟之后呈黄褐色；颖片披针形，先端尖或渐尖，质薄，边缘呈膜质，两颖近等长或第二颖稍短，具1脉，第二颖具3脉，中脉具短纤毛；外稃膜质，长3-4毫米，顶端2裂，基盘两侧的柔毛近等长或稍长于稃体，芒自稃体背中部附近伸出，细直，长3-4毫米；内稃长为外稃的1/2或2/3，延伸小穗轴长约0.5毫米，与其所被柔毛共长达4毫米；花药长2-2.5毫米，淡褐色。花期7-9月。
  产东北、华北、陕西（太白山）、新疆（阿勒泰、布尔津）、四川、湖北（巴东）。生于海拔700-3600米的山坡草地、林下、沟谷潮湿草地。欧亚大陆温寒地带都有分布。模式标本采自堪察加。

《Flora of China》 Vol. 22 (2006)
Deyeuxia purpurea  (Trinius) Kunth
大叶章   da ye zhang
Arundo purpurea Trinius in Sprengel, Neue Entdeck. Pflanzenk. 2: 52. 1820 ["1821"]; A. langsdorfii Link; Calama-grostis angustifolia Komarov; C. langsdorfii (Link) Trinius; C. langsdorfii var. angustifolia (Komarov) Jaroschenko; C. langs-dorfii subsp. angustifolia (Komarov) Voroshilov; C. langsdorfii var. manshurica (Baranov & Skvortzov) Kitagawa; C. manshu-rica Baranov & Skvortzov; C. purpurea (Trinius) Trinius; C. purpurea subsp. langsdorfii (Link) Tzvelev; Deyeuxia angusti-folia (Komarov) Y. L. Chang (1959), not Vickery (1940); D. langsdorfii (Link) Kunth.
Perennial, tussocky, rhizomatous; rhizomes short or elongate. Culms erect, slender to stout, up to 1.5 m tall, 1–4 mm in diam., usually branched, (4–)6–8-noded. Leaf sheaths smooth, glabrous; leaf blades linear, flat, 10–30 cm, 4–20(–40) mm wide, scabrid; ligule oblong-elliptic, 3–10 mm, obtuse or lacerate. Panicle loosely contracted, narrowly elliptic in outline, 5–20 × 2.5–8 cm; branches slender, ascending or spreading, 2–8 cm, scabrid, bare below middle. Spikelets 3.5–5 mm, yellowish green, purplish, or yellowish brown; glumes lanceolate, subequal, lower glume 1-veined, upper glume 3-veined, scabrid, ciliolate along midvein, apex acute or acuminate; callus hairs equaling or slightly longer than lemma; lemma 3–4 mm, membranous, apex 2-denticulate; awn arising near or above middle of lemma, 1–4 mm, slender, straight; palea 1/2–2/3 as long as lemma; rachilla 0.5–1 mm, including hairs 2–4 mm. Anthers 2–2.5 mm. Fl. Jul–Sep.
Moist meadows, grassy slopes, woodlands; below 100–3600 m. Hebei, Heilongjiang, Hubei, Jilin, Liaoning, Nei Mongol, Shaanxi, Shanxi, Sichuan, Xinjiang [Japan, Korea, Mongolia, Russia; Europe, North America].
Deyeuxia purpurea encompasses a widespread, apomictic complex of morphologically very variable and intergrading forms. These have been treated by different authors either as separate species, or at subspecific or varietal rank within D. purpurea. Most are based on types from outside China, and no attempt is made here to relate these names to variation in the complex within China.

The name Calamagrostis angustifolia refers to a particularly narrow-leaved form (blades 1.5–3.5 mm wide) from NE China.