5. Corylus chinensis Franchet, J. Bot. (Morot). 13: 197. 1899. 华榛 hua zhen Corylus chinensis var. macrocarpa Hu; C. colurna Linnaeus var. chinensis (Franchet) Burkill; C. papyracea Hickel.Trees to 40 m tall; bark gray-brown, fissured. Branchlets purplish brown, slender, sparsely villous, stipitate glandular, glabrescent. Petiole 1-2.5 cm, densely villous, stipitate glandular; leaf blade ovate, ovate-elliptic, or obovate-elliptic, 8-18 × 6-12 cm, base obliquely cordate, margin irregularly and doubly serrate, apex mucronate or shortly caudate, abaxially bearded in axils of lateral veins, villous along veins, adaxially glabrous; lateral veins 7-11 on each side of midvein. Male inflorescences 4-6 in a cluster, cylindric, 1.5-2 cm; bracts rhombic-ovate, pubescent. Female inflorescences 2-6 in a cluster; bracts forming a tubular sheath, 2-6 cm, striate, pilose, stipitate glandular, much constricted above nut and deeply divided into linear lobes, usually forked at apex. Nut enclosed by bracts, ovoid-globose, 1-1.5 cm in diam., glabrous.* Forests on moist mountain slopes; 1200-3500 m. Gansu, Guizhou, Hubei, Shaanxi, SW Sichuan, Xizang, NW YunnanThis species is vulnerable because of its rarity.【引自:Flora of China】
乔木,高可达20米;树皮灰褐色,纵裂;枝条灰褐色,无毛;小枝褐色,密被长柔毛和 刺状腺体,很少无毛无腺体,基部通常密被淡黄色长柔毛。叶椭圆形、宽椭圆形或宽卵形, 长8-18厘米,宽6-12厘米,顶端骤尖至短尾状,基部心形,两侧显著不对称,边缘具不 规则的钝锯齿,上面无毛,下面沿脉疏被淡黄色长柔毛,有时具刺状腺体,侧脉7-11对; 叶柄长1-2.5厘米,密被淡黄色长柔毛及刺状腺体。雄花序2-8枚排成总状,长2-5 厘米;苞鳞三角形,锐尖,顶端具1枚易脱落的刺状腺体。果2-6枚簇生成头状,长2-6 厘米,直径1-2.5厘米;果苞管状,于果的上部缢缩,较果长2倍,外面具纵肋,疏被长柔 毛及刺状腺体,很少无毛和无腺体,上部深裂,具3-5枚镰状披针形的裂片,裂片通常又 分叉成小裂片。坚果球形,长1-2厘米,无毛。【引自:中国植物志】