西南鸢尾Iris bulleyana

中文名(Chinese Name):西南鸢尾
学名(Scientific Name):Iris bulleyana Dykes
英文名(English Common Name):
别名(Chinese Common Name):空茎鸢尾
异名(Synonym):ILimniris bulleyana (Dykes) Rodion.
科属(Family & Genus):鸢尾科(Iridaceae)鸢尾属
形态特征(Description):多年生草本。根状茎较粗壮,斜伸,节密集,包有红褐色的老叶残留的叶鞘及膜质的鞘状叶;须根绳索状,灰白色或棕褐色,有皱缩的横纹,生于根状茎的一侧。叶基生,条形,长15-45厘米,宽0.5-1厘米,顶端渐尖,基部鞘状,略带红色,无明显的中脉。花茎中空,光滑,高20-35厘米,直径4-6毫米,生有2-3片茎生叶,基部围有少量红紫色的鞘状叶;苞片2-3枚,膜质,绿色,边缘略带红褐色,长5.5-12厘米,宽0.8-1.2厘米,内包含有1-2朵花;花天蓝色,直径6.5-7.5厘米;花梗长2-6厘米;花被管三棱状柱形,短而粗,长1-1.2厘米,外花被裂片倒卵形,长4.5-5厘米,宽约2.5厘米,爪部楔形,中央下陷呈沟状,无附属物,具蓝紫色的斑点及条纹,内花被裂片直立,披针形或宽披针形,长约4厘米,宽约1.5厘米,淡蓝紫色,花盛开时略向外倾;雄蕊长约2.5厘米,花药乳白色,较花丝略短;花柱分枝片状,中肋隆起,深蓝紫色,长约3.5厘米,顶端裂片近方形,全缘,子房绿色,钝三角形,长约2厘米。蒴果三棱状柱形,长4-5.5 厘米,直径1.5-1.8厘米,6条肋明显,顶端钝,无喙,常有残存的花被,表面具明显的网纹;种子棕褐色,扁平,半圆形。花期6-7月,果期8-10月。
分布(Distribution):产四川、云南、西藏。生于海拔2300-3500米的山坡草地或溪流旁的湿地上。
用途(Use):
引自中国植物志英文版FOC Vol. 24 Page 300
Iris bulleyana Dykes, Gard. Chron. ser. , 47: 418. 1910.
西南鸢尾 xi nan yuan wei
Iris bulleyana | Iridaceae  | Iris
Credit: Harvard University Herbaria
Rhizomes creeping, thick. Leaves grayish green on both surfaces, linear, 15--45 cm × 3--10 mm, midvein absent, base reddish. Flowering stems 10--40(--70) cm × 4--6 mm, hollow, 2- or 3-leaved; spathes 2 or 3, green, slightly reddish brown at margin, 5.5--12 × 0.8--1.2 cm, (1 or)2-flowered. Flowers pale lilac or bluish violet to dark violet, rarely white, 6.5--7.5 cm in diam.; pedicel 2--6 cm. Perianth tube 1--1.2 cm; outer segments obovate, with darker lines and markings on central, whitish or yellowish patch, 4.5--5 × ca. 2.5 cm; inner segments ± erect, light violet, lanceolate, ca. 4 × 1.5 cm. Stamens ca. 2.5 cm; anthers milky white. Ovary ca. 2 cm. Style branches ca. 3.5 cm. Capsule cylindric, 4--5.5 × 1.5--1.8 cm, 3-angled, distinctly 6-veined, apex not beaked, obtuse. Seeds brown, semiorbicular, flat. Fl. Jun--Jul, fr. Aug--Oct. 2 n = 40.
Damp hillsides, meadows, streamsides; 2300--4300 m. Sichuan, Xizang, Yunnan [Myanmar].
White-flowered forms, which are restricted to Yunnan, have been recognized as Iris bulleyana f. alba Y. T. Zhao (Acta Phytotax. Sin. 18: 54. 1980).
西南鸢尾Iris bulleyana

西南鸢尾Iris bulleyana
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