petals white, obovate, nearly as long as or slightly longer than sepals, glabrous, apex erose.

1、

staminode fan like to obovate, slightly longer than upper lip, sometimes absent.

退化雄蕊像风扇一样的到倒卵形，稍微长于上面唇，有时无。

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2、

proximal bracts leaflike, distal ones navicular-oblong or obovate.

叶状的下部苞片，上部的舟形的长圆形或倒卵形。

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3、

petals free, anterior one narrower, all blue or purple, oblong, obovate, or elliptic.

花瓣离生，下花瓣更狭窄，全部的蓝色的或紫色，长圆形，倒卵形，或椭圆形。

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4、

samara oblong-elliptic to oblong-obovate; branchlets without a corky layer.

翅果长圆形椭圆倒卵形到长圆形；小枝没有一木栓质层。

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5、

leaf blade spatulate to obovate, base abruptly contracted to obtuse, apex rounded.

突然的叶片匙形的到倒卵形，基部收缩的到钝，先端圆形。

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6、

leaf blade ovate, oblong, or rarely obovate, dark green or brownish when dry; bracts lanceolate.

干燥时的叶片卵形，长圆形，或很少倒卵形，深绿色的或带褐色的；苞片披针形。

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7、

leaf blade obovate-oblong to broadly oblanceolate, apex acute to shortly acuminate; hypogynous glands basally connate.

叶片卵状长圆形到宽倒披针形，先端锐尖到短渐尖；下位的腺基部合生。

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8、

petals 3--5, yellow, narrowly obovate, clawed at base, with a nectary pit covered by a scale above claw.

花瓣3-5，黄，狭倒卵形，瓣爪在基部，具一蜜槽被高于瓣爪的鳞片盖住的。

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9、

middle tooth of upper lip obovate-oblate, lateral teeth triangular, teeth of lower lip lanceolate.

中间上唇的齿三角形的倒卵形扁球形，侧齿，披针形的下唇的齿。

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10、

branchlets red; leaflets narrowly oblong, narrowly ovate, or narrowly obovate-elliptic, abaxially and on inflorescences sparsely pubescent.

小枝红；小叶狭长圆形，狭卵形，或狭倒卵形椭圆形，背面和在花序疏生短柔毛上。

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11、

orchid having large elliptic to obovate fleshy leaves and fragrant pink-and-white flowers dotted with red.

一种兰花，叶子椭圆形至倒卵形，花有香味、白色与粉色相间、有红色斑点。

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12、

petals broadly oblong-obovate, lateral ones glabrous, stigma not papillose.

花瓣宽长圆形倒卵形，侧生的无毛，柱头不。

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13、

lobes obliquely obovate, spreading, shorter than tube, overlapping to left.

斜倒卵形，平展的裂片，短于筒部，重叠给左边。

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14、

branches erect or ascending; leaf blade oblong, or oblong-obovate; petiole very short or nearly absent.

分枝直立或上升；叶片长圆形，或长圆形倒卵形；叶柄非常短或近无。

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15、

branches pubescent; leaf blade obovate or oblong-obovate; outer sepals equaling inner ones.

分枝短柔毛；叶片倒卵形的或长圆形倒卵形；外部萼片等长内部的。

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16、

central leaflet obovate-elliptic; style conspicuous.

中心的小叶倒卵状椭圆形；花柱明显。

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17、

plants without creeping, long rhizomes; leaves oblanceolate to obovate.

没有匍匐，长根状茎的植株；叶倒披针形的到倒卵形。

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18、

leaves cordate-obovate to broadly ovate, apex acuminate, margin nearly entire; tepals purple at margin.

叶心形倒卵形的到宽卵形，先端渐尖，边缘近全缘；花被片紫色的在边缘。

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19、

proximal cauline leaflet blade orbicular-rhombic, broadly rhombic-ovate, or obovate.

下部茎生小叶叶片圆形菱形，卵形宽棱形，或倒卵形。

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20、

filaments glabrous; corolla yellow, pink, or red to deep crimson, sometimes bicolored; leaves obovate, broadly elliptic to narrowly oblong.

花丝无毛花冠黄，粉红色，或红色到深红色，有时二色；倒卵形的叶，宽椭圆形到狭长圆形。

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