小葉對葉蘭檢視原始碼討論檢視歷史
| 小葉對葉蘭 |
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中文名:小葉對葉蘭 拉丁學名:Listera smithii Schltr. 界:植物界 門:被子植物門 綱:單子葉植物綱 目:微子目 科:蘭科 屬:鳥巢蘭屬 拼 音:xiǎo yè duì yè lán |
小葉對葉蘭(xiǎo yè duì yè lán，學名 Neottia microphylla (S. C. Chen & Y. B. Luo) S. C. Chen，異名：Listera smithii Listera microphylla )，蘭科，對葉蘭屬植物。產四川西北部（松潘）。生於海拔3900米的林下。該種唇瓣形狀與三角葉對葉蘭（L. deltoidea）十分相似；但後者葉片為正三角形，花序具10餘朵花而不同。 [1]
小葉對葉蘭形態特徵
植株高9-12厘米，具短的根狀莖。莖纖細，近基部處具2枚鞘，約在上部3/4處具2枚對生葉，葉以上部分疏被短柔毛。
葉片卵形或卵圓形，較小，長1.3-1.7厘米，寬1.2-1.6厘米，先端鈍或近急尖，基部圓形或寬楔形。總狀花序長1.5-4厘米，具2-5朵花；花序軸略被短柔毛；花苞片卵狀披針形，長約4毫米；
花梗長約3毫米，疏生短柔毛；子房長約2毫米，疏生短柔毛；花較小；中萼片狹橢圓形，長約3毫米，寬1.2毫米，先端鈍，具1脈；側萼片斜卵狀披針形，長約3毫米，寬約1.5毫米；
花瓣線形，幾與萼片等長，寬僅0.4毫米；唇瓣狹長圓形，長8毫米，寬2.5-3毫米，邊緣具乳突狀細緣毛，先端2深裂；兩裂片向前伸直，近平行，彼此相距約2毫米，中間具一細尖齒；
裂片線狀披針形，內側邊緣長約2.7毫米；蕊柱長2.5毫米，稍向前傾；
花葯位於藥床之中，向前俯傾；蕊喙大，寬卵形。花期7月。
分類文獻
Listera smithii Schltr. in Act. Hort. Gothob. 1: 144. 1924; S. Y. Hu in Quart. J. Taiwan Mus. 27(3-4): 430. 1974;橫斷山區維管植物2: 2549. 1994.
Basionym: Listera microphylla S. C. Chen & Y. B. Luo, Novon 12: 438. 2002.
Plants autotrophic, 5-11 cm tall. Rhizome with a very few elongate, filiform roots. Stem 0.6-2 cm, slender. Leaves 2, opposite, borne below middle of plant, sessile, orbicular-ovate, 0.6-0.8 × 0.7-0.9 cm, minutely glandular hairy on both surfaces, base broadly truncate, apex obtuse-acute. Peduncle 2.6-6 cm, glabrous, sometimes with 1 sterile bract; rachis 1.6-3 cm, sparsely pubescent, laxly 3- or 4-flowered; floral bracts subovate or ovate-lanceolate, 3-4 × ca. 2 mm, apex acute. Flowers resupinate, greenish white; pedicel arcuate, 1.5-2 mm, slender, glabrous; ovary ca. as long as pedicel, glabrous; sepals and petals not spreading. Dorsal sepal oblong-ovate, ca. 3.5 × 1.5 mm, 1-veined, apex obtuse; lateral sepals lanceolate-ovate, slightly oblique, similar in size to dorsal sepal, outer surface carinate. Petals oblong-ovate, slightly shorter and narrower than dorsal sepal; lip spreading forward, obovate-cuneate, 5-5.5 × ca. 3.5 mm, apex deeply 2-lobed; lobes broadly oblong, ca. 1.4 × 1.6 mm, 3-veined, apices obtuse; sinus with small tooth between lobes; disk with an indistinct ridge extending from base of lip and continuous with tooth in sinus. Column suberect, 1.5-2 mm; anther ca. 1 mm. Capsule erect, ellipsoid, ca. 3 × 2 mm. Fl. Oct. 2n = 40 + 0-2B*.
● Grassy slopes; ca. 2500 m. NW Yunnan.[2]
小葉對葉蘭生長環境
生長於海拔3900米的林下。 [3]