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长葶鸢尾Iris delavayi

时间:2013-09-24 12:52来源:未知 作者:徐晔春 点击:
中文名( Chinese Name ):长葶鸢尾 学名( Scientific Name ): Iris delavayi Micheli 英文名( English Common Name ): long-scape iris 别名( Chinese Common Name ): 异名( Synonym ): Limniris delavayi (Micheli) Rodion. 科属( Family Ge
中文名(Chinese Name):长葶鸢尾
学名(Scientific Name):Iris delavayi Micheli
英文名(English Common Name):long-scape iris
别名(Chinese Common Name):
异名(Synonym):Limniris delavayi (Micheli) Rodion.
科属(Family & Genus):鸢尾科(Iridaceae)鸢尾属
形态特征(Description):多年生草本,植株基部带红紫色,围有膜质的鞘状叶及毛发状的老叶残留纤维。根状茎粗壮,直径约1厘米,斜伸,外包有棕褐色老叶残留的纤维;须根粗,黄白色,有皱缩的横纹。叶灰绿色,剑形或条形,长50-80厘米,宽0.8-1.5厘米,顶端长渐尖,基部鞘状,无明显的中脉。花茎中空,光滑,高60-120厘米,直径5-7毫米,顶端有1-2个短侧枝,中下部有3-4枚披针形的茎生叶;苞片2-3枚,膜质,绿色,略带红褐色,宽披针形,长7-11厘米,宽1.8-2厘米,顶端长渐尖,内包含有2朵花;花深紫色或蓝紫色,具暗紫色及白色斑纹,直径约9厘米;花梗长3-6厘米;花被管长1.5-1.8厘米,外花被裂片倒卵形,长约7厘米,宽约3厘米,顶端微凹,花盛开时向下反折,花被裂片上有白色及深紫色的斑纹,爪部楔形,中央下陷呈沟状,无附属物,内花被裂片倒披针形,长约5.5厘米,花盛开时向外倾斜;花药乳黄色,花丝淡紫色,花柱分枝淡紫色,长约5 厘米,宽约1.6 厘米,顶端裂片长圆形,子房柱状三棱形,长1.8-2厘米,直径约7毫米。蒴果柱状长椭圆形,长5-6.5厘米,直径1.5-2.5厘米,无喙;种子红褐色,扁平,圆盘形,直径约6毫米。花期5-7月,果期8-10月。
分布(Distribution):产四川、云南、西藏。生于海拔2700-3100米的水沟旁湿地或林缘草地。
用途(Use):
引自中国植物志英文版FOC Vol. 24 Page 301      
Iris delavayi Micheli, Rev. Hort. Paris. 67: 398. 1895.
长葶鸢尾 chang ting yuan wei
 Iris delavayi | Iridaceae  | Iris
Credit: Harvard University Herbaria
Rhizomes creeping, thick, ca. 1 cm in diam. Leaves grayish green, reddish at base, sword-shaped or linear, 50--80 × 0.6--1.5 cm, midvein absent, base surrounded by persistent fibers. Flowering stems shortly 1- or 2-branched near apex, 0.6--1.5 m × 5--7 mm, hollow, 3- or 4-leaved; spathes 2 or 3, green, tinted light reddish purple, broadly lanceolate, 7--11 × 1.8--2 cm, 2-flowered, apex acuminate. Flowers dark violet, ca. 9 cm in diam.; pedicel 3--6 cm. Perianth tube 1.6--1.8 cm; outer segments obovate, with central, dark purple- and white-mottled pattern, ca. 7 × 3 cm, apex retuse; inner segments obliquely spreading, oblanceolate, ca. 5.5 cm. Filaments pale purple; anthers milky yellow. Ovary 1.8--2 cm × ca. 7 mm. Style branches pale purple, ca. 5 × 1.6 cm. Capsule cylindric to ellipsoid, 5--6.5 × 1.5--2.5 cm, 3-angled, apex not beaked. Seeds reddish brown, semiorbicular, flat, ca. 6 mm in diam. Fl. May--Jul, fr. Aug--Oct. 2 n = 40*.
* Forest margins, meadows, damp places along ditches; 2400--4500 m. Guizhou, Sichuan, Xizang, Yunnan.




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