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太白花楸Sorbus tapashana

时间:2013-11-07 14:07来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):太白花楸 学名( Scientific Name ): Sorbus tapashana Schneid. 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): Sorbus giraldiana C. K. Schneid. Sorbus tianschanica var. toment
中文名(Chinese Name):太白花楸
学名(Scientific Name):Sorbus tapashana Schneid.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Sorbus giraldiana C. K. Schneid.  Sorbus tianschanica var. tomentosa Chen Y. Yang et Y. L. Han  Pyrus acucuparia L.: Pritz.
科属(Family & Genus):蔷薇科(Rosaceae)花楸属
形态特征(Description):小乔木或灌木,高约4米;小枝粗壮,圆柱形,棕褐色或灰褐色,有皮孔,幼时被白色柔毛,老时脱落无毛;冬芽长大,长卵形,先端渐尖,具数枚棕褐色鳞片,外被白色柔毛。奇数羽状复叶,连叶柄共长9-18厘米,叶柄长1.5-2.7厘米;小叶片(4)5-6(7)对,间隔1-2厘米,顶端和基部的小叶片较中部的稍小,卵状披针形或椭圆披针形,长4-6.5厘米,宽1-1.7厘米,先端短渐尖,基部偏斜圆形,边缘有锐锯齿,基部或近基部1/3以下部分几全缘,上面暗绿色,无毛,下面在中脉上有白色柔毛;叶轴外被白色柔毛,上面具沟;托叶线状披针形,膜质,早落。复伞房花序大形,具多数花朵,疏松排列,总花梗和花梗被白色柔毛;花梗长5-8毫米;花直径1.5-2厘米;萼筒钟状,内外两面无毛;萼片三角形,先端圆钝,外面无毛或仅在边缘上有稀疏白色柔毛,内面有白色柔毛;花瓣宽卵形或近圆形,长7-9毫米,宽6-7毫米,先端圆钝,白色,内面近基部微有白色柔毛;雄蕊通常20,长约为花瓣之半或更短;花柱通常5,短于雄蕊,基部密被白色绒毛。果实球形,直径8-10毫米,红色,先端有宿存闭合萼片。花期6月,果期9月。
分布(Distribution):产陕西、甘肃、新疆,生于海拔1900-3500米云杉、冷杉杜鹃林中。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 151     
Sorbus tapashana C. K. Schneider, Bull. Herb. Boissier, sér. 2. 6: 313. 1906.
太白花楸 tai bai hua qiu| Rosaceae  | Sorbus
Sorbus giraldiana C. K. Schneider; S. tianschanica Ruprecht var. tomentosa C. Y. Yang & Y. L. Han.
Shrubs or small trees, ca. 4 m tall. Branchlets brownish or grayish brown, terete, with distinct lenticels, white pubescent when young, glabrous when old; buds narrowly ovoid, 0.9–1.7 cm, apex acuminate; scales several, brownish, white pubescent. Leaves imparipinnate, together with rachis 9–18 cm; petiole 1.5–2.7 cm; stipules caducous, linear-lanceolate, 5–7 mm, membranous, margin entire; rachis sulcate, slightly winged, white pubescent; leaflets (4 or)5- or 6(or 7)-paired, at intervals of 1–2 cm, blade dark green adaxially, ovate-lanceolate or elliptic-lanceolate, 4–6.5 × 1–1.7 cm, terminal and basal ones slightly smaller than middle ones, abaxially with white hairs along midvein, adaxially glabrous, base obliquely rounded, margin sharply serrate, subentire basally or lower 1/3, apex shortly acuminate. Inflorescences 5–9 × 5–8 cm, loosely many flowered; rachis and pedicels white pubescent; bracts linear, 4–6 mm, membranous, margin entire. Pedicel 5–8 mm. Flowers 1.5–2 cm in diam. Hypanthium campanulate, abaxially glabrous. Sepals triangular, 1.5–2.5 mm, abaxially glabrous or sparsely white pubescent only along margin, apex obtuse. Petals white, broadly ovate or suborbicular, 5–8 × 5–7 mm, adaxially with white hairs near base, apex obtuse. Stamens ca. 20, ca. 1/2 as long as petals or shorter. Styles usually 5, not exceeding stamens, densely white tomentose basally. Fruit red, globose, 8–10 mm in diam.; sepals persistent. Fl. Jun, fr. Sep.
Coniferous forests, thickets on mountain slopes, mountain summits; 1900--3500 m. Gansu, Qinghai, Shaanxi, Xinjiang.
 


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