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褐梨Pyrus phaeocarpa

时间:2013-11-11 12:18来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 褐梨 学名( Scientific Name ): Pyrus phaeocarpa Rehd. 英文名( English Common Name ): 别名( Chinese Common Name ): 棠杜梨 异名( Synonym ): 科属( Family Genus ): 蔷薇科Rosaceae梨属Pyrus 形态特征( Des
中文名(Chinese Name):褐梨
学名(Scientific Name):Pyrus phaeocarpa Rehd.
英文名(English Common Name):
别名(Chinese Common Name):棠杜梨
异名(Synonym):
科属(Family & Genus):蔷薇科Rosaceae梨属Pyrus
形态特征(Description):乔木,高达5-8米;小枝幼时具白色绒毛,二年生枝条紫褐色,无毛;冬芽长卵形,先端圆钝,鳞片边缘具绒毛。叶片椭圆卵形至长卵形,长6-10厘米,宽3.5-5厘米,先端具长渐尖头,基部宽楔形,边缘有尖锐锯齿,齿尖向外,幼时有稀疏绒毛,不久全部脱落;叶柄长2-6厘米,微被柔毛或近于无毛;托叶膜质,线状披针形,边缘有稀疏腺齿,内面有稀疏绒毛,早落。伞形总状花序,有花5-8朵,总花梗和花梗嫩时具绒毛,逐渐脱落,花梗长2-2.5厘米;苞片膜质,线状披针形,很早脱落。花直径约3厘米;萼筒外面具白色绒毛;萼片三角披针形,长约2-3毫米,内面密被绒毛;花瓣卵形,长1-1.5厘米,宽0.8-1.2厘米,基部具有短爪,白色;雄蕊20,长约花瓣之半;花柱3-4,稀2,基部无毛。果实球形或卵形,直径2-2.5厘米,褐色,有斑点,萼片脱落;果梗长2-4厘米。花期4月,果期8-9月。
分布(Distribution):产河北、山东、山西、陕西、甘肃。生山坡或黄土丘陵地杂木林中,海拔100-1200米。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 177
Pyrus phaeocarpa Rehder, Proc. Amer. Aca d. Arts. 50: 235. 1915.
褐梨 he li | Rosaceae  | Pyrus
Trees to 5–8 m tall. Branchlets purplish red when young, purplish brown when old, terete, white tomentose when young, glabrous when old, sparsely pale lenticellate; buds narrowly ovoid, apex obtuse; scales tomentose at margin. Stipules caducous, linear-lanceolate, 1–2 mm, membranous, adaxially sparsely tomentose, margin sparsely glandular denticulate, apex acuminate; petiole 2–6 cm, sparsely pubescent or subglabrous; leaf blade elliptic-ovate or narrowly ovate, 6–10 × 3.5–5 cm, sparsely tomentose when young, soon glabrescent, base broadly cuneate, margin serrate, apex long acuminate. Raceme umbel-like, 5–8-flowered; peduncle tomentose when young, soon glabrescent; bracts caducous, linear-lanceolate, 8–11 mm, membranous, adaxially villous, margin entire, apex acuminate. Pedicel 2–2.5 cm, subglabrous. Flowers ca. 3 cm in diam. Hypanthium campanulate, abaxially white tomentose. Sepals triangular-lanceolate, 2–3 mm, adaxially tomentose, margin entire, apex acuminate. Petals white, ovate, 1–1.5 cm, base shortly clawed, apex rounded. Stamens 20, ca. 1/2 as long as petals. Ovary (2- or)3- or 4-loculed, with 2 ovules per locule; styles (2 or)3 or 4, nearly as long as stamens, glabrous basally. Pome brown with pale dots, globose or ovoid, 2–2.5 cm in diam., 3- or 4-loculed; sepals caducous; fruiting pedicel 2–4 cm, glabrous. Fl. Apr, fr. Aug–Sep. 2n = 34*.
Slopes, mixed hillside forests of the Loess Plateau; 100--1200 m. Gansu, Hebei, Shaanxi, Shandong, Shanxi, Xinjiang.
This species is often used as stock to graft pear cultivars.
 
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