褐鳞木
褐鳞木 |
中文学名:褐鳞木 拉丁学名:Astronia ferruginea Elmer 别 称:锈叶野牡丹(台湾) 门:被子植物门 纲:双子叶植物纲 亚 纲:蔷薇亚纲 目:桃金娘目 科:野牡丹科 属:褐鳞木属 |
褐鳞木为野牡丹科灌木或小乔木。叶对生,卵形或长圆形,全缘, 3基出脉;具叶柄。花小,花萼钟形。蒴果近球形,为宿存萼所包。种子小,线形或线状倒披针形。 [1]
目录
褐鳞木形态特征
大灌木或小乔木,树皮深褐色,无毛;小枝四棱形,多少被微柔毛或糠批。
叶片坚纸质或革质,椭圆形或近倒卵形,顶端急尖或近渐尖,基部楔形或广楔形,长8.5-12厘米,宽4-7厘米,全缘,3基出脉,叶面无毛,基出脉下凹,侧脉及细脉微凸,背面密被微柔毛及糠秕,脉隆起,细脉网状,平整;叶柄长2-3厘米,多少被糠秕。
由聚伞花序组成的圆锥花序,顶生,长约10厘米,宽约12厘米,多花,密被糠秕及微柔毛;花梗长1-3毫米,与花萼均被糠秕;花萼钟形,长1.5-2毫米,裂片5,广三角形,长约0.5毫米;花瓣5,广卵形,顶端急药隔膨大,较药室大2-3倍,无距;子房近球形,顶端平截,无冠,花柱长约1毫米。
蒴果近球形,顶端平截,为宿存萼所包;宿存萼直径3-5毫米,顶端平截,边缘不整齐;种子线状披针形,长约2毫米。[2]
Astronia ferruginea Elmer in Leafl. Philipp. Bot. 4: 1205. 1911; H. L. Li in Pacific Sci. 7: 184. 1953; H. Keng et H. L. Li in Fl. Taiwan 3: 840. Pl. 833. 1977——A. pulchra auct. non Vidal: Hayata in Journ. Coll. Sci. Univ. Tokyo 30: 114. 1911 (Mat. Fl. Formos.) et Icon. Pl. Formos. 2: 25. 1912——A. formosana Kanehira Formos. Trees 258. 1917; Masamune Short Fl. Formos. 152. 1936——A. cumingiana auct. non Vidal: Sasaki in Kanehira Formos. Trees rev. ed. 507. fig. 469. 1936——Astronia sp. Henry in Trans. As. Soc. Journ. 24: Suppl. 44. 1896 (List Pl. Formos.).
Shrubs or small trees. Branches 4-sided, ± puberulous or furfuraceous; bark dark brown, glabrous. Petiole 2-3 cm, slightly furfuraceous; leaf blade elliptic to obovate, 8.5-14(-18) × 4-7(-8.5) cm, stiffly papery to leathery, abaxially ferruginous puberulous along main veins when young but later becoming ferruginous tomentose or lepidote, adaxially glabrous, secondary veins 1 on each side of midvein, base cuneate to obtuse, margin entire, apex acute to subacuminate. Inflorescences terminal, cymose paniculate, ca. 10 × 12 cm, many-flowered, densely furfuraceous and lepidote; peduncle ca. 3 cm. Pedicel 1-3 mm, furfuraceous and lepidote. Hypanthium campanulate, 1.5-2 mm, furfuraceous and lepidote. Calyx lobes 5, broadly triangular, ca. 0.5 mm. Petals 5, broadly ovate, ca. 1 × 1 mm, apex acute. Stamens 8; filaments ca. 2 mm; anthers oblong, 0.5-1 mm; connective inflated, 2-3 × as large as anthers, spur absent. Ovary subglobular. Style ca. 1 mm. Capsule subglobular, apex truncate; hypanthium 2-3 × 3-5 mm, margin irregular, apex truncate. Seeds linear-lanceolate, ca. 2 mm.
褐鳞木生长环境
生长于海拔200-400米的山间林中。