云南双盾木Dipelta yunnanensis

云南双盾木Dipelta yunnanensis

云南双盾木Dipelta yunnanensis

云南双盾木Dipelta yunnanensis

中文名(Chinese Name):云南双盾木
学名(Scientific Name):Dipelta yunnanensis Franch.
英文名(English Common Name):
别名(Chinese Common Name):云南双楯
异名(Synonym):Dipelta ventricosa Hemsl.
科属(Family & Genus):忍冬科(Caprifoliaceae)双盾木属
形态特征(Description):落叶灌木,高达4米;幼枝被柔毛。冬芽具3-4对鳞片。叶椭圆形至宽披针形,长5-10厘米,宽2-4厘米,顶端渐尖至长渐尖,基部钝圆至近圆形,全缘或稀具疏浅齿,上面疏生微柔毛,主脉下陷,下面沿脉被白色长柔毛,边缘具睫毛;叶柄长约5毫米。伞房状聚伞花序生于短枝顶部叶腋;小苞片2对,一对较小,卵形,不等形,另一对较大,肾形;萼檐膜质,被柔毛,裂至2/3处,萼齿钻状条形,不等长,长约4-5毫米;花冠白色至粉红色,钟形,长2-4厘米,基部一侧有浅囊,二唇形,喉部具柔毛及黄色块状斑纹;花丝无毛;花柱较雄蕊长,不伸出。果实圆卵形,被柔毛,顶端狭长,2对宿存的小苞片明显地增大,其中一对网脉明显,肾形,以其弯曲部分贴生于果实,长2.5-3厘米,宽1.5-2厘米;种子扁,内面平,外面延生成脊。花期5-6月,果熟期5 11月。
分布(Distribution):产陕西、甘肃、湖北、四川、贵州及云南等地,生于海拔880-2400米的杂木林下或山坡灌丛中。
用途(Use):
引自中国植物志英文版FOC Vol. 19 Page 647
Dipelta yunnanensis Franchet, Rev. Hort. 63: 246. 1891.
云南双盾木 yun nan shuang dun mu| Linnaeaceae  | Dipelta
Dipelta ventricosa Hemsley; D. yunnanensis var. brachycalyx Handel-Mazzetti.
Shrubs, deciduous, to 4 m tall. Branches pubescent. Petiole to 5 mm; leaf blade elliptic to lanceolate, 5-10 × 2-4 cm, abaxially white villous on midvein, ciliate along margin, adaxially sparsely pubescent, base cuneate to rounded, margin entire or rarely remotely dentate, apex acuminate to long acuminate. Ovaries with 4 bracts; 2 outer bracts larger, reniform, accrescent in fruit and not obscuring calyx at anthesis; 2 inner bracts smaller, unequal, one ovate, other smaller and narrowly elliptic. Calyx 5-lobed, pubescent; lobes divided 1/2-2/3, spreading in fruit. Corolla white to dark pink, bilabiate, 20-40 mm, very short and narrowly tubular at base; lower lip pubescent with yellow-orange reticulate markings. Ovary pubescent; style inserted, glabrous. Achene ovoid with a short neck, pubescent. Achene crowned with persistent calyx, enclosed within 2 accrescent, membranous, winglike, and reniform bracts. Fl. May-Jul, fr. Jul-Nov.
● Mixed forests, scrub; 800-2400 m. Gansu, Guizhou, Hubei, Shaanxi, Sichuan, Yunnan.
(责任编辑:徐晔春)

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