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陕甘花楸Sorbus koehneana

时间:2018-07-01 09:36来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ): 陕甘花楸 学名( Scientific Name ): Sorbus koehneana Schneid. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Pyrus koehneana (C. K. Schneid.) Cardot Sorbus multijuga var. m
中文名(Chinese Name):陕甘花楸
学名(Scientific Name):Sorbus koehneana Schneid.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Pyrus koehneana (C. K. Schneid.) Cardot  Sorbus multijuga var. microdonta Koehne  Sorbus valbrayi H. Lév.
科属(Family & Genus):蔷薇科(Rosaceae)花楸属
形态特征(Description):灌木或小乔木,高达4米;小枝圆柱形,暗灰色或黑灰色,具少数不明显皮孔,无毛;冬芽长卵形,先端急尖或稍钝,外被数枚红褐色鳞片,无毛或仅先端有褐色柔毛。奇数羽状复叶,连叶柄共长10-16厘米,叶柄长1-2厘米;小叶片8-12对,间隔7-12毫米,长圆形至长圆披针形,长1.5-3厘米,宽0.5-1厘米,先端圆钝或急尖,基部偏斜圆形,边缘每侧有尖锐锯齿10-14,全部有锯齿或仅基部全缘,上面无毛,下面灰绿色,仅在中脉上有稀疏柔毛或近无毛,不具乳头状突起;叶轴两面微具窄翅,有极稀疏柔毛或近无毛,上面有浅沟;托叶草质,少数近于膜质,披针形,有锯齿,早落。复伞房花序多生在侧生短枝上,具多数花朵,总花梗和花梗有稀疏白色柔毛;花梗长1-2毫米;萼筒钟状,内外两面均无毛;萼片三角形,先端圆钝,外面无毛,内面微具柔毛;花瓣宽卵形,长约4-6毫米,宽3-4毫米,先端圆钝,白色,内面微具柔毛或近无毛;雄蕊20,长约为花瓣的1/3;花柱5,几与雄蕊等长,基部微具柔毛或无毛。果实球形,直径6-8毫米,白色,先端具宿存闭合萼片。花期6月,果期9月。
分布(Distribution):产山西、河南、陕西、甘肃、青海、湖北、四川,生于海拔2300-4000米山区杂木林。
用途(Use):我国西北各地山区森林中习见,枝叶秀丽,秋季结实累累,可栽培供观赏。
引自中国植物志英文版:FOC Vol. 9 Page 157
Sorbus koehneana C. K. Schneider, Bull. Herb. Boissier, sér. 2. 6: 316. 1906.
陕甘花楸 sha gan hua qiu| Rosaceae  | Sorbus
Pyrus koehneana (C. K. Schneider) Cardot; Sorbus multijuga Koehne var. microdonta Koehne; S. valbrayi H. Léveillé.
Shrubs or small trees, 1.5–4 m tall. Branchlets dark gray or blackish gray, terete, slender, glabrous, with few lenticels; buds narrowly ovoid, 5–10 mm, apex acute or ± obtuse; scales several, reddish brown, glabrous or brown pubescent only apically. Leaves imparipinnate, together with rachis 10–16 cm; petiole 1–2.5 cm; stipules caducous, lanceolate, 6–7 mm, submembranous, margin serrate, rarely entire; rachis adaxially sulcate, puberulous or subglabrous, slightly winged; leaflet blades 8–12-paired, rarely more, at intervals of 7–12 mm, grayish green abaxially, oblong to oblong-lanceolate, 1.5–3 × 0.5–1 cm, lateral veins 9 or 10 pairs, abaxially puberulous or subglabrous only along midvein, papillose, adaxially glabrous, base obliquely rounded, margin coarsely serrate except at base, with 10–14 teeth per side, apex obtuse or acute. Compound corymbs terminal, 5–9 × 4–6(–10) cm, many flowered; rachis and pedicels sparsely white pubescent, nearly glabrous when old; bracts caducous, linear or lanceolate, 5–6 mm. Pedicel 1–2 mm. Flowers 8–9 mm in diam. Hypanthium campanulate, glabrous. Sepals triangular, shorter than petals, apex obtuse. Petals white, 4–6 × 3–4 mm, adaxially puberulous or subglabrous, base shortly clawed. Stamens 20, ca. 1/3 as long as petals. Styles 5, nearly as long as stamens, ± free at base, puberulous or subglabrous. Fruit white, globose, 6–8 mm in diam.; sepals persistent. Fl. May–Jun, fr. Aug–Sep. 2n = 34*, 68*.
Mixed forests in mountain regions, thickets; 2300--4000 m. Gansu, Henan, Hubei, Qinghai, Shaanxi, Shanxi, Sichuan, W Yunnan.
 




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