墨脱尖子木
墨脱尖子木 |
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中文学名:墨脱尖子木 界:植物界 门:被子植物门 纲:双子叶植物纲 目:桃金娘目 科:野牡丹科 属:尖子木属 种:刚毛尖子木 分布区域:西藏 |
墨脱尖子木(mò tuō jiān zǐ mù),学名 Oxyspora cernua (Roxburgh) J. D. Hooker & Thomson ex Triana,异名:Melastoma cernuum ,灌木1-2米高。 茎4棱,软鳞片状星状。 叶柄0.5-4厘米,密被软鳞片; 叶片卵形,椭圆状卵形,或者近椭圆形,花序顶生,一聚伞状圆锥花序,20-40厘米,软鳞片状;花序梗具狭翅,基部具或苞片;产于600-1200米西藏东南部 。 [1]
目录
形态特征
灌木1-2米高。 茎4棱,软鳞片状星状。 叶柄0.5-4厘米,密被软鳞片; 叶片卵形,椭圆状卵形,或者近椭圆形, 15-32 * 5-12 厘米,硬纸质;
背面无毛, 软鳞片状的只在脉上,正面具软鳞片或无毛,次脉在中脉两边各2,基部圆形到近心形,边缘全缘或近全缘,先端渐尖。花序顶生,一聚伞状圆锥花序,20-40厘米,软鳞片状;
花序梗具狭翅,基部具或苞片; 苞片无梗,叶状, 2-6 * 1.5-4.5 厘米,基部心形。 小苞片和小苞片披针形到钻形,1-3毫米。托杯狭漏斗状,0.5-1厘米,纵向8肋,无毛或软鳞片状。
萼裂片宽三角状卵形,1-1.2毫米,先端锐尖和具细尖。 花瓣粉红色到红色,长圆形, 1-1.2 * 0.6-0.8 厘米。较长的雄蕊具药隔膨胀但基部不延长。
短雄蕊具药隔而不是距。 蒴果倒卵球形, 9-13 * 长约5毫米; 托杯狭漏斗状,软鳞片状。 花期9-11月。
Melastoma cernuum Roxburgh, Fl. Ind., ed. 1832, 2: 404. 1832 ["cernua"].Shrubs 1-2 m tall. Stems 4-sided, furfuraceous stellate. Petiole 0.5-4 cm, densely furfuraceous; leaf blade ovate, elliptic-ovate, or subelliptic, 15-32 × 5-12 cm, stiffly papery, abaxially glabrous, furfuraceous only on veins, adaxially furfuraceous or glabrous, secondary veins 2 on each side of midvein, base rounded to subcordate, margin entire or subentire, apex acuminate.
Inflorescences terminal, a cymose panicle, 20-40 cm, furfuraceous; peduncle narrowly winged, basally with 2 or 3 bracts; bracts sessile, leaflike, 2-6 × 1.5-4.5 cm, base cordate. Bractlets and bracteoles lanceolate to subulate, 1-3 mm.
Hypanthium narrowly funnelform, 0.5-1 cm, longitudinally 8-ribbed, glabrous or furfuraceous. Calyx lobes broadly triangular-ovate, 1-1.2 mm, apex acute and apiculate. Petals pink to red, oblong, 1-1.2 × 0.6-0.8 cm.
Longer with connective swollen but not extended at base. Shorter stamens with connective not spurred. Capsule obovoid, 9-13 × ca. 5 mm; hypanthium narrowly funnelform, furfuraceous. Fl. Sep-Nov.
产地生境
Mixed forest margins, thickets, valleys, moist places; 600-1200 m. SE Xizang [Bhutan, India].
混交林边缘,灌丛,山谷,潮湿的地方; 600-1200米西藏东南部 [不丹,印度 ].