锥序酸脚杆
锥序酸脚杆 |
中文学名:锥序酸脚杆 拉丁学名:Medinilla himalayana Hook.f. ex Triana 界:植物界 门:被子植物门 纲:双子叶植物纲 亚 纲:原始花被亚纲 目:桃金娘目 科:野牡丹科 属:酸脚杆属 种:锥序酸脚杆 命名者及年代:Hook.f. ex Triana,1871 |
锥序酸脚杆(学名:Medinilla himalayana Hook.f. ex Triana),为酸脚杆属灌木,附生于树上,分枝多;产于云南南部。生于海拔约1900米的山谷密林中。 [1]
目录
锥序酸脚杆形态特征
灌木,附生于树上,分枝多;茎幼时近四棱形,以后圆柱形,无毛,表皮木栓化,具皱纹。
叶片坚纸质,披针状卵形至椭圆状卵形,顶端渐尖,基部楔形,长6-11厘米,宽2.2-4.5厘米,全缘,5基出脉,其中2脉近叶基部,叶面无毛,密布小窝点,基出脉平整,背面无毛,基出脉隆起,侧脉两面均不明显;叶柄长约3毫米,无毛。
复聚伞花序,顶生,总梗长约3厘米,苞片及小苞片三角形,长约1毫米,花梗长约6毫米,花萼钟形,长约5毫米,边缘薄,具浅波状齿,齿不明显,萼管长约3毫米,四棱形,密布小瘤,无毛;花瓣菱状倒卵形,不对称,1侧偏斜,上部I侧具三角形小片,顶端具腺毛尖头,长约14毫米,宽约6毫米,雄蕊8,同形,其中4枚略长,花药线状披针形,基部具小瘤,药隔微膨大,略下延,呈不明显的距,长者长约14毫米,花药长6.5毫米,短者长约12毫米,花药长5.5毫米;子房下位,与萼管贴生,顶端平截,具小齿,8棱,无毛。
浆果坛形,长约7毫米,直径约5毫米;果梗长约5毫米;种子倒卵形,光滑。花果期约9月。
Medinilla himalayana Hook. f. ex Triana in Trans. Linn. Soc. 28: 88. 1871, C. B. Clarke in Hook. f. Fl. Brit. Ind. 2: 549. 1879, H. L. Li in Journ. Arn. Arb. 25: 38. 1944, ex specim. C. W. Wang 78287, err. #$#7828#$#;云南植物志2: 130. 1979; C. Chen植物分类学报21 (4): 419. 1983
Shrubs, epiphytic, many-branched. Branchlets 4-sided, later terete, glabrous; bark corky and wrinkled. Petiole ca. 3 mm, glabrous; leaf blade lanceolate-ovate to elliptic-ovate, 6-16 × 2.2-7 cm, stiffly papery, both surfaces glabrous, adaxially densely scrobiculate, secondary veins 1-2 on each side of midvein, base cuneate, margin entire, apex acute to acuminate. Inflorescences terminal, compound cymes; peduncle 2-3 cm. Pedicel 8-11 mm, glabrous. Hypanthium campanulate, 4-sided, ca. 3 mm, densely tuberculate, glabrous, margin inconspicuously repand. Calyx lobes ca. 5 mm. Petals rhombic-ovate, ca. 1.4 × 0.6 cm, oblique, apex with 1 glandular trichome at tip. Stamens 8, subequal, 4 longer and 4 slightly shorter; anthers linear-lanceolate, base tuberculate; connective base inconspicuously spurred. Longer stamens ca. 1.4 cm; anthers ca. 6.5 mm. Shorter stamens ca. 1.2 cm; anthers ca. 5.5 mm. Ovary 8-ribbed, glabrous, apex truncate and dentate. Berry urceolate, 7-10 × 5-9 mm, persistent sepals semiorbicular, glabrous, margin repand. Seeds obovate. Fl. and fr. Sep.
锥序酸脚杆生长环境
生长于海拔约1900米的山谷密林中。