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银毛树Tournefortia argentea

时间:2013-11-11 15:54作者:徐晔春 点击: 次 标签: 紫草科 Boraginaceae 紫丹属 Tournefortia
  中文名(Chinese Name):银毛树
学名(Scientific Name):Tournefortia argentea L. f.
英文名(English Common Name):
别名(Chinese Common Name):
异名(Synonym):Messerschmidia argentea (Linn. f.) Johnst.  Argusia argentea (L. f.) Heine  Tournefortia arborea Blanco
科属(Family & Genus):紫草科Boraginaceae紫丹属Tournefortia
形态特征(Description):小乔木或灌木,高1-5米;小枝粗壮,密生锈色或白色柔毛。叶倒披针形或倒卵形,生小枝顶端,长7-13厘米,宽2-4厘米,先端钝或圆,自中部以下渐狭为叶柄,上下两面密生丝状黄白色毛。镰状聚伞花序顶生,呈伞房状排列,直径5-10厘米,密生锈色短柔毛;花萼肉质,无柄,长1.5-2毫米,5深裂,裂片长圆形,倒卵形或近圆形,外面密生锈色短柔毛,内面仅基部被毛或近无毛,长约为花冠的1/2;花冠白色,筒状,长2.5-3毫米,裂片卵圆形,开展,长约2毫米,比花筒长,外面仅中央具1列糙伏毛,其余无毛;雄蕊稍伸出,花药卵状长圆形,长约1毫米,花丝极短,不明显,着生花冠筒基部以上4-5毫米处;子房近球形,无毛,花柱不明显,柱头2裂,基部为膨大的肉质环状物围绕。核果近球形,直径约5毫米,无毛。花果期4-6月。
分布(Distribution):产海南岛、西沙群岛及台湾。生海边沙地。日本、越南及斯里兰卡有分布。
用途(Use):
引自中国植物志英文版:FOC Vol. 16 Page 342
Tournefortia argentea Linnaeus f., Suppl. Pl. 133. 1781.
银毛树 yin mao shu| Boraginaceae  | Tournefortia
Argusia argentea (Linnaeus f.) Heine; Messerschmidia argentea (Linnaeus f.) I. M. Johnston; Tournefortia arborea Blanco.
Shrubs 1-5 m tall or small trees; branchlets stout, densely rust-colored or white pubescent. Leaves terminating branches, oblanceolate to obovate, 7-13 × 2-4 cm, densely covered with yellowish white filiform hairs, base attenuate, apex obtuse to rounded. Inflorescences terminal, corymbose, 5-10 cm in diam., densely rust-colored pubescent; cymes scorpioid. Calyx fleshy, sessile, 1.5-2 mm, 5-parted; lobes oblong or obovate to rounded, densely rust-colored pubescent outside, pubescent only at base or subglabrous inside, ca. 1/2 as long as corolla. Corolla white, tubular, 2.5-3 mm; lobes spreading, ovate, ca. 2 mm, longer than tube. Stamens somewhat exserted; filaments inserted ca. 4 mm above base of corolla tube; anthers ovate-oblong, ca. 1 mm. Ovary subglobose, glabrous. Style obscure; stigma 2-cleft, base ringlike, inflated. Fruit subglobose, ca. 5 mm in diam., glabrous. Fl. and fr. Apr-Jun.
Sandy beaches. Hainan, Taiwan [Indonesia, Japan, Philippines, Sri Lanka, Vietnam; Pacific Islands (New Caledonia, Polynesia)].
 


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