川滇鼠李Rhamnus gilgiana
中文名(Chinese Name):川滇鼠李
学名(Scientific Name):Rhamnus gilgiana Heppl.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):鼠李科(Rhamnaceae)鼠李属
形态特征(Description):多刺灌木,高1-2米;小枝开展,对生,近对生或互生,黑褐色,幼时灰色,被细短柔毛,顶端具细刺;老枝灰褐色或褐色,无毛,具不规则纵条裂。叶纸质至厚纸质,对生或近对生,稀兼互生,或在短枝上簇生,椭圆形或卵状椭圆形,稀披针形或披针状矩圆形,长1.5-3厘米,宽0.5-1厘米,顶端钝或圆形,有时微凹,稀稍尖,基部楔形,边缘常背卷,具不明显的细圆齿或近全缘,侧脉每边3-4条,几不明显,上面暗绿色,下面淡绿色,脉腋有簇毛或近无毛;叶柄长1-3毫米,上面具小沟,有微毛;托叶线状钻形,稍短于叶柄,脱落。花单性,黄绿色,干时变黑色,通常3-5个簇生于短枝叶腋,4基数,雄花钟状,长3.5-4毫米,被疏微毛;萼片卵状三角形,长2-2.5毫米,渐尖;花瓣小,矩圆状披针形,长约1毫米,雄蕊与花瓣几等长;退化子房极小,花柱2浅裂,花梗细,长1-3毫米,有微毛。核果近球形,直径4-5毫米,基部有浅盆状宿存的萼筒,具2-3个分核,褐色,果梗长2-3毫米,无毛;种子斜椭圆形,长4-4.5毫米,淡褐色,背面有为种子全长或4/5上窄下宽的纵沟。花期4-5月,果期6-8月。
分布(Distribution):产四川、云南,生海拔2200-2700米杂木林下或灌木丛中。
引自中国植物志英文版:FOC Vol. 12 Page 143, 151
Rhamnus gilgiana Heppeler, Notizbl. Bot. Gart. Berlin-Dahlem. 10: 343. 1928.
川滇鼠李 chuan dian shu li| Rhamnaceae | Rhamnus
Shrubs 1-2 m tall, much spinescent. Branchlets spreading, opposite, subopposite, or alternate, black-brown, gray when young, puberulent, terminating in a spine; old branches gray-brown or brown, glabrous, irregularly fissured. Leaves opposite or subopposite, rarely alternate, or fascicled at short shoots; stipules linear-subulate, shorter than petioles, caducous; petiole 1-3 mm, puberulent; leaf blade abaxially pale green, turning black when dry, adaxially dark green, elliptic or ovate-elliptic, rarely lanceolate or lanceolate-oblong, 1.5-3 cm × 5-10 mm, papery to thickly papery, abaxially clustered hairy in vein axils or subglabrous, lateral veins 3 or 4 pairs, nearly inconspicuous, base cuneate, margin often revolute, inconspicuously crenulate or subentire, apex obtuse or rounded, sometimes emarginate, rarely slightly acute. Flowers yellow-green, turning black when dry, unisexual, 4-merous, usually 3-5-fascicled in leaf axils of short shoots. Male flowers campanulate, 3.5-4 mm, sparsely puberulent; sepals ovate-triangular, 2-2.5 mm, apex acuminate; petals oblong-lanceolate, small, ca. 1 mm; stamens nearly equaling petals; rudimentary ovary minute; style 2-fid; pedicels 1-3 mm, puberulent. Drupe brown, subglobose, 4-5 mm in diam., with shallow, cup-shaped, persistent calyx tube at base, with 2 or 3 stones; fruiting pedicel 2-3 mm, glabrous. Seeds pale brown, elliptic, 4-4.5 mm, abaxially with a margined furrow extending over 4/5 of length. Fl. Apr-May, fr. Jun-Aug.
● Understories of mixed forests and thickets; 2200-2700 m. SW Sichuan, NW Yunnan.
This species is very similar to Rhamnus leptacantha, but the latter differs in having branchlets glabrous and leaves subleathery, spatulate, and glabrous on both surfaces.
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(责任编辑:徐晔春)
学名(Scientific Name):Rhamnus gilgiana Heppl.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):
科属(Family & Genus):鼠李科(Rhamnaceae)鼠李属
形态特征(Description):多刺灌木,高1-2米;小枝开展,对生,近对生或互生,黑褐色,幼时灰色,被细短柔毛,顶端具细刺;老枝灰褐色或褐色,无毛,具不规则纵条裂。叶纸质至厚纸质,对生或近对生,稀兼互生,或在短枝上簇生,椭圆形或卵状椭圆形,稀披针形或披针状矩圆形,长1.5-3厘米,宽0.5-1厘米,顶端钝或圆形,有时微凹,稀稍尖,基部楔形,边缘常背卷,具不明显的细圆齿或近全缘,侧脉每边3-4条,几不明显,上面暗绿色,下面淡绿色,脉腋有簇毛或近无毛;叶柄长1-3毫米,上面具小沟,有微毛;托叶线状钻形,稍短于叶柄,脱落。花单性,黄绿色,干时变黑色,通常3-5个簇生于短枝叶腋,4基数,雄花钟状,长3.5-4毫米,被疏微毛;萼片卵状三角形,长2-2.5毫米,渐尖;花瓣小,矩圆状披针形,长约1毫米,雄蕊与花瓣几等长;退化子房极小,花柱2浅裂,花梗细,长1-3毫米,有微毛。核果近球形,直径4-5毫米,基部有浅盆状宿存的萼筒,具2-3个分核,褐色,果梗长2-3毫米,无毛;种子斜椭圆形,长4-4.5毫米,淡褐色,背面有为种子全长或4/5上窄下宽的纵沟。花期4-5月,果期6-8月。
分布(Distribution):产四川、云南,生海拔2200-2700米杂木林下或灌木丛中。
引自中国植物志英文版:FOC Vol. 12 Page 143, 151
Rhamnus gilgiana Heppeler, Notizbl. Bot. Gart. Berlin-Dahlem. 10: 343. 1928.
川滇鼠李 chuan dian shu li| Rhamnaceae | Rhamnus
Shrubs 1-2 m tall, much spinescent. Branchlets spreading, opposite, subopposite, or alternate, black-brown, gray when young, puberulent, terminating in a spine; old branches gray-brown or brown, glabrous, irregularly fissured. Leaves opposite or subopposite, rarely alternate, or fascicled at short shoots; stipules linear-subulate, shorter than petioles, caducous; petiole 1-3 mm, puberulent; leaf blade abaxially pale green, turning black when dry, adaxially dark green, elliptic or ovate-elliptic, rarely lanceolate or lanceolate-oblong, 1.5-3 cm × 5-10 mm, papery to thickly papery, abaxially clustered hairy in vein axils or subglabrous, lateral veins 3 or 4 pairs, nearly inconspicuous, base cuneate, margin often revolute, inconspicuously crenulate or subentire, apex obtuse or rounded, sometimes emarginate, rarely slightly acute. Flowers yellow-green, turning black when dry, unisexual, 4-merous, usually 3-5-fascicled in leaf axils of short shoots. Male flowers campanulate, 3.5-4 mm, sparsely puberulent; sepals ovate-triangular, 2-2.5 mm, apex acuminate; petals oblong-lanceolate, small, ca. 1 mm; stamens nearly equaling petals; rudimentary ovary minute; style 2-fid; pedicels 1-3 mm, puberulent. Drupe brown, subglobose, 4-5 mm in diam., with shallow, cup-shaped, persistent calyx tube at base, with 2 or 3 stones; fruiting pedicel 2-3 mm, glabrous. Seeds pale brown, elliptic, 4-4.5 mm, abaxially with a margined furrow extending over 4/5 of length. Fl. Apr-May, fr. Jun-Aug.
● Understories of mixed forests and thickets; 2200-2700 m. SW Sichuan, NW Yunnan.
This species is very similar to Rhamnus leptacantha, but the latter differs in having branchlets glabrous and leaves subleathery, spatulate, and glabrous on both surfaces.
(责任编辑:徐晔春)
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