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

1、

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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2、

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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3、

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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4、

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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5、

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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6、

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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7、

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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8、

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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9、

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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10、

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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11、

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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12、

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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13、

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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14、

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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15、

leaf blade margin entire or with obscure, lateral lobes; perianth segments narrowly obovate to linear; seed pitted.

叶片边缘全缘或具遮蔽，侧面裂片；花被片狭倒卵形到线形；种子具洼点。

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16、

shrubs. leaf blade oblong, obovate, or oblong-elliptic, apex rounded, obtuse, or rarely acute, never acuminate.

灌木；叶片长圆形，倒卵形，或长圆状椭圆形，先端圆形，钝的，或很少锐尖，从未渐尖的。

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17、

annual, lacking non-flowering shoots at anthesis; spikelets obovate-cuneate; glumes firm, inflated.

一年生草本，缺乏的非花嫩枝在花期；小穗倒卵形楔形；颖片公司，膨大。

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18、

bracts narrowly elliptic or obovate-lanceolate, (20-)25-26 mm, constricted into a stipe at base; female inflorescence loosely racemose.

狭椭圆形或倒卵形披针形的苞片，（20-）25-26毫米，缢缩成为一在基部；松弛的雌花序总状。

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19、

pedicels densely tomentose; calyx lobes unequal; leaf blade oblong to obovate, abaxial surface glabrescent.

花梗密被绒毛；萼裂片不等长；叶片长圆形到倒卵形，背面后脱落。

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20、

terminal leaflet of radical leaves broadly rhombic-ovate or obovate-lanceolate, apex usually acuminate, rarely acute.

卵形胚根叶宽棱形的顶生小叶披针形或倒卵形，先端通常渐尖，很少锐尖。

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