目前为止，中国西南野生生物种质资源库共保藏该物种: 种子37份; DNA材料43份; DNA2份;

• 科:禾本科    Poaceae
• 属:燕麦属    Avena
• 种:野燕麦   Avena fatua

5. Avena fatua Linnaeus, Sp. Pl. 1: 80. 1753. 野燕麦 ye yan mai Annual. Culms erect or geniculate at base, 50–150 cm tall, unbranched, 2–4-noded. Leaf sheaths glabrous or basal sheaths puberulous; leaf blades 10–30 cm, 4–12 mm wide, scabrid or adaxial surface and margins pilose; ligule 1–5 mm. Panicle narrowly to broadly pyramidal, 10–40 cm, nodding; branches scabrid. Spikelets 1.7–2.5 cm, florets 2 or 3, all florets awned; rachilla easily disarticulating below each floret at maturity, each floret with a bearded callus, internodes hirsute or glabrous; glumes lanceolate, subequal, herbaceous, 9–11-veined, apex finely acute; callus hairs up to 4 mm; lemmas 1.5–2 cm, leathery, glabrous to densely hispid in lower half, green and scaberulous above, awned from near middle, apex shortly 2–4-toothed; awn 2–4 cm, geniculate, column twisted, blackish brown. Fl. and fr. Apr–Sep. 2n = 42.Weed of cultivated fields, grassy mountain slopes, roadsides and other disturbed places; below 4300 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hebei, Heilongjiang, Henan, Hubei, Hunan, Jiangsu, Jiangxi, Nei Mongol, Ningxia, Qinghai, Shaanxi, Sichuan, Taiwan, Xinjiang, Xizang, Yunnan, Zhejiang [Afghanistan, Bhutan, India (Sikkim), Kazakhstan, Kyrgyzstan, Nepal, Pakistan, Russia, Tajikistan, Turkmenistan, Uzbekistan; N Africa, SW Asia, Europe].This is a noxious weed, especially in fields of wheat and cultivated oats, native to Europe and C and SW Asia, but now spread throughout temperate regions of the world.【引自：Flora of China】

一年生。须根较坚韧。秆直立，光滑无毛，高60-120厘米，具2-4节。叶鞘松弛，光滑或基部者被微毛；叶舌透明膜质，长1-5毫米；叶片扁平，长10-30厘米，宽4-12毫米，微粗糙，或上面和边缘疏生柔毛。圆锥花序开展，金字塔形，长10-25厘米，分枝具棱角，粗糙；小穗长18-25毫米，含2-3小花，其柄弯曲下垂，顶端膨胀；小穗轴密生淡棕色或白色硬毛，其节脆硬易断落，第一节间长约3毫米；颖草质，几相等，通常具9脉；外稃质地坚硬，第一外稃长15-20毫米，背面中部以下具淡棕色或白色硬毛，芒自稃体中部稍下处伸出，长2-4厘米，膝曲，芒柱棕色，扭转。颖果被淡棕色柔毛，腹面具纵沟，长6-8毫米。花果期4-9月。 【引自：中国植物志】