Arrow-Lip Closed-Mouth Orchid
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Arrow-Lip Closed-Mouth Orchid
P Native Photo: Jambey Tsering
Common name: Arrow-Lip Closed-Mouth Orchid
Botanical name: Cleisostoma linearilobatum    Family: Orchidaceae (Orchid family)
Synonyms: Cleisostoma sagittiforme, Cleisostoma sikkimense, Ormerodia sagittata

Arrow-Lip Closed-Mouth Orchid is a small sized, tree-dwelling orchid with a stem enveloped by leaf bearing sheaths and carrying distichous, unequally bilobed apically, linear leaves. The plant blooms in the spring through summer on a lateral, 14-20 cm long, paniculate, hairless, laxly many flowered inflorescence with 3 distant, tubular bracts and ovate pointed floral bracts. Flowers are purplish red, small; flower-stalk and ovary about 5 mm. Dorsal sepal is oblong, boat-shaped, about 3 x 1.5 mm, blunt; lateral sepals slightly obliquely ovate, about 3 x 1.5 mm, blunt. Petals are sickle shaped-oblong, about 2.5 x 1.5 mm, blunt; lip lateral lobes erect, triangular, pointed; mid-lobe arrow shaped-triangular, tip blunt, with 2 backward triangular basal lobules on either side, with a longitudinal ridge; spur horn-shaped, about 5 mm, tip blunt. Arrow-Lip Closed-Mouth Orchid is found in Bhutan, NE India, S Yunnan, Thailand, at altitudes of 900-1600 m. Flowering: May-September.

Identification credit: Jambey Tsering Photographed in Sessa, West Kameng, Arunachal Pradesh.

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