Cleisostoma uraiense (Hayata) Garay & H. R. Sweet Orchids S. Ryukyu Islands. 156. 1974.

绿花隔距兰 lü hua ge ju lan

Sarcanthus uraiensis Hayata, Icon. Pl. Formosan. 8: 130. 1919; Cleisostoma viridescens (Fukuyama) Garay; S. viridescens Fukuyama.

Stems erect or pendulous, 20-40 cm, 4-6 mm in diam., many leaved. Leaves distichous, linear or narrowly oblong, 10-20 × 1.2-2 cm, obtuse and unequally bilobed. Inflorescence lateral, opposite to leaves, longer or shorter than leaves, unbranched or with short branches, many flowered; floral bracts deltoid, small, ca. 1 mm. Flowers yellowish green, slightly fleshy; pedicel and ovary 3-5 mm. Dorsal sepal subelliptic or obovate-oblong, concave, ca. 4 × 2.5 mm, obtuse; lateral sepals similar to dorsal sepal, concave. Petals obliquely oblong, 2.5-3.5 × ca. 1.2 mm, obtuse; lip thickly fleshy, base spurred, 3-lobed; lateral lobes erect, falcate-triangular, small; mid-lobe suborbicular, ca. 1 mm; spur ca. 2 mm, front wall callus large, glabrous, slightly septate. Column ca. 2 mm; anther cap slightly narrowed toward apex; stipe slender; viscidium suborbicular. Fl. Apr-Sep.

茎直立或下垂，20-40厘米，直径4-6毫米。，许多树叶。叶二列，线形或狭长圆形，10-20×1.2-2厘米，钝和不相等双叶。花序侧生，对生叶，长于或短于叶，不分枝或具短枝，多花；花苞片三角形，小，约1毫米。花淡黄绿色，稍肉质；花梗和子房3-5毫米。背面萼片近椭圆形或倒卵形长圆形，凹，约4×2.5毫米，钝；侧生萼片类似于背生萼片，凹。花瓣斜长圆形，2.5-3.5×约1.2毫米，钝；厚肉质的唇，基部距，3浅裂；侧裂片直立，镰刀状三角形，小；中间裂片近圆形，约1毫米；距约2毫米，前壁愈伤组织大，无毛，稍具隔膜。柱长约2 mm；花药帽向先端稍狭窄；柄纤细；粘液近圆形。花期4-9月。

Epiphytic on tree trunks in forests; ca. 200 m. S Taiwan [Japan (Ryukyu Islands), Philippines].

森林中树干上的附生植物；约200米。台湾南部[日本（琉球群岛），菲律宾]。