织梦CMS - 轻松建站从此开始!

花卉图片网

当前位置: 主页 > 乔木 >

西藏木瓜Chaenomeles thibetica

时间:2013-11-07 11:21来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):西藏木瓜 学名( Scientific Name ): Chaenomeles thibetica Y 英文名( English Common Name ): 别名( Chinese Common Name ): 异名( Synonym ): 科属( Family Genus ): 蔷薇科(Rosaceae)木瓜属 形态特征( Descr
中文名(Chinese Name):西藏木瓜
学名(Scientific Name):Chaenomeles thibetica Yü
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym): 
科属(Family & Genus):蔷薇科(Rosaceae)木瓜属
形态特征(Description):灌木或小乔木,高达1.5-3米;通常多刺,刺锥形,长1-1.5厘米;小枝屈曲,圆柱形,有光泽,红褐色或紫褐色;多年生枝条黑褐色,散生长圆形皮孔;冬芽三角卵形,红褐色,先端急尖,有少数鳞片,在先端或鳞片边缘微有褐色柔毛。叶片革质,卵状披针形或长圆披针形,长6-8.5厘米,宽1.8-3.5厘米,先端急尖,基部楔形,全缘,上面深绿色,中脉与侧脉均微下陷,下面密被褐色绒毛,中脉及侧脉均显著突起;叶柄粗短,长1-1.6厘米,幼时被褐色绒毛,逐渐脱落;托叶大形,草质,近镰刀形或近肾形,长约1厘米,宽约1.2厘米,边缘有不整齐锐锯齿,稀钝锯齿,上面无毛,下面被褐色绒毛。花3-4朵簇生;花柱5,基部合生,并密被灰白色柔毛。果实长圆形或梨形,长6-11厘米,直径5-9厘米,黄色,味香;萼片宿存,反折,三角卵形,先端急尖,长约2毫米;种子多数,扁平,三角卵形,长约1厘米,宽约0.6厘米,深褐色。
分布(Distribution):产西藏(拉萨、林芝、波密)、四川西部。海拔2600-2760米,生山坡山沟灌木丛中。
用途(Use):
引自中国植物志英文版:FOC Vol. 9 Page 173     
Chaenomeles thibetica T. T. Yu, Acta Phytotax. Sin. 8: 234. 1963.
西藏木瓜 xi zang mu gua | Rosaceae  | Chaenomeles
Shrubs or small trees, 1.5–3 m tall; usually with many thorns. Branchlets red or purplish brown when young, blackish brown when old, terete, with sparse, oblong lenticels; buds reddish brown, triangular, with few scales, apex obtuse. Stipules subfalcate or subreniform, large, ca. 1 × 1.2 cm, herbaceous, margin irregularly serrate, apex acute, rarely obtuse; petiole short, 1–1.6 cm, initially brown tomentose, soon glabrous; leaf blade dark green adaxially, ovate-lanceolate or oblong-lanceolate, 6–8.5 × 1.8–3.5 cm, leathery, midvein and lateral veins conspicuous abaxially and impressed adaxially, abaxially densely brown tomentose, base cuneate, margin entire, apex acute. Pedicel short. Flowers 3- or 4-fascicled. Hypanthium campanulate, abaxially glabrous. Sepals reflexed, triangular, ca. 2 mm, glabrous. Petals and stamens not seen. Styles 5, connate and densely gray pubescent at base. Pome fragrant, yellow, oblong or pear-shaped, 5–9 cm in diam., sepals caducous; fruiting pedicel short. Fl. Jul, fr. Sep–Oct.
Among shrubs on slopes or in valleys; 2600--3800 m. W Sichuan, E Xizang.
Yu and Lu (in FRPS 36: 354. 1974) suggested that this species is a hybrid between Chaenomeles cathayensis and Docynia delavayi.
 




(责任编辑:徐晔春)
顶一下
(1)
50%
踩一下
(1)
50%
------分隔线----------------------------
发表评论
请自觉遵守互联网相关的政策法规,严禁发布色情、暴力、反动的言论。
评价:
表情:
用户名: 验证码:点击我更换图片
栏目列表
推荐内容