宝岛鸢尾兰  转到Flora of China

Oberonia insularis  分类来源:中国植物志

宝岛鸢尾兰 Oberonia insularis

异名:套叶鸢尾兰 Oberonia sinica、宝岛鸢尾兰 Oberonia pumila 

Epiphytes. Rhizome creeping, 1–1.5 mm in diam., slender, covered by scalelike sheaths at nodes. Stem short, 1–2 cm. Leaves 3–6, distichous-equitant, laterally compressed, fleshy, ensiform or ovate-lanceolate, 6–19 × 1.5–5 mm, base articulate. Racemes terminal, about 3–5 cm long, many flowered. Bracts ovate lanceolate, 1–2 mm, margin slightly erose. Pedicel as long as the bracts. Flowers light green to pale yellowish brown, ca. 2 mm in diam., not resupinate. Sepals reflexed, ovate-elliptic, ca. 0.8–1 × 0.4 mm, acute; lateral sepals usually narrower than dorsal sepal. Petals reflexed, narrowly oblong in outline, ca. 0.7–1 × 0.15 mm; lip ovate-oblong in outline, 1.7 × 0.6 mm, margin slightly toothed, bilobed at apex; apical lobes divergent, narrowly lanceolate, 0.3–0.4 mm. Column short, ca. 0.2 mm; pollinia 4, in 2 pairs, without caudicles, waxy. Flowering May–June; fruiting July.

生于林间悬岩上,海拔1600米。产甘肃(模式标本产地)、广西、贵州、湖南、陕西、台湾和云南。

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根状茎纤细,匐伏于悬岩上,长达7厘米或更长,直径1-1.5毫米,具节,常分枝,每相距2-5毫米着生叶簇。茎很短,具3-6枚叶。

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叶两侧压扁,肉质,二列套叠,剑形或狭长圆状披针形,长(3-)6-11毫米,宽1.5-2毫米,基部具1个关节。

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花葶稍弯曲,长约3厘米;总状花序长约2.5厘米,具数十朵花;花苞片卵形,长约1毫米,边缘稍呈啮蚀状;花梗和子房长约0.8毫米;花2-3朵簇或单生,浅黄褐色,直径约2毫米;萼片卵状椭圆形或椭圆形,长约0.8毫米;花瓣狭长圆形,稍弧曲,长约0.7毫米;唇瓣轮廓为卵状长圆形,边缘有不整齐的锯齿,先端叉状2深裂;2枚小裂片略平行地向前伸,狭披针形,长0-3-0.4毫米。蕊柱长约0.2毫米。

 

花期5-6月;果期7月。

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