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23份; DNA材料46份; DNA1份;

• 科:蔷薇科    Rosaceae
• 属:栒子属    Cotoneaster
• 种:钝叶栒子   Cotoneaster hebephyllus

14. Cotoneaster hebephyllus Diels, Notes Roy. Bot. Gard. Edinburgh. 5: 273. 1912. 钝叶栒子 dun ye xun zi Shrubs, sometimes treelike, deciduous, 1.5–3 m tall. Branchlets dark reddish brown, slender, initially pilose, soon glabrescent. Petiole 5–7 mm, sparsely tomentose-villous; stipules caducous at fruiting, linear-lanceolate, 3–4 mm, sparsely villous; leaf blade elliptic to broadly ovate, (1.5–)2–3 × (1–) 1.2–2 cm, subleathery, abaxially sparsely tomentose-villous or tomentose, with glaucous bloom, adaxially glabrous, base broadly cuneate to rounded, apex obtuse or emarginate, mucronate. Corymbs (1–)1.5–3 cm, 5–15-flowered; rachis and pedicels sparsely villous; bracts linear-lanceolate, 2–3 mm, slightly villous. Pedicel 2–3 mm. Hypanthium campanulate, abaxially glabrous or slightly pilose near base. Sepals broadly triangular, abaxially glabrous or puberulous only apically, apex acute. Petals spreading, white, suborbicular, 5–6 mm in diam., adaxially puberulous near base, base very shortly clawed, apex obtuse. Stamens 20, slightly shorter than petals; anthers purple. Ovary densely pilose apically; styles 2, free, somewhat not exceeding stamens. Fruit dark red, ovoid or pyriform, rarely oblong, (5–) 6–8 mm in diam., pyrenes 2, sometimes united into 1. Fl. May–Jun, fr. Aug–Sep.Mountain regions, clearings at forest margins, thickets, river valleys; 1300--3400 m. Gansu, Hebei, Sichuan, SE Xizang, Yunnan.【引自：Flora of China】

落叶灌木，高1.5-3米，有时成小乔木状；枝条开展，小枝细瘦，暗红褐色，幼时被柔毛，不久即脱落。叶片稍厚，近革质，椭圆形至广卵形，长2.5-3.5厘米，宽1.2-2厘米，先端多数圆钝或微凹，具小凸尖，基部宽楔形至圆形，上面常无毛，下面有白霜，具长柔毛或绒毛状毛；叶柄长5-7毫米，疏生长柔毛；托叶细小，线状披针形，微具柔毛，至果期脱落。花5-15朵成聚伞花序，总花梗和花梗稍具柔毛；花梗长2-5毫米；花直径7-8毫米；萼筒钟状，外面无毛，有时在近基部稍有柔毛，内面无毛；萼片宽三角形，先端急尖，外面无毛。内面无毛或仅先端微具柔毛；花瓣平展，近圆形，直径3-4毫米，先端圆钝，基部有极短爪，内面近基部处疏生细柔毛，白色；雄蕊20，稍短于花瓣，花药紫色；花柱2，离生，比雄蕊稍短；子房顶部密生柔毛。果实卵形，有时长圆形，直径6-8毫米，暗红色，常2核连合为一体。花期5-6月，果期8-9月。 【引自：中国植物志】