Epiphytic herbs. Stem usually unbranched covered with remains of overlapping leaf bases. Leaves distichous, usually
oblanceolate, fleshy or coriaceous, often with reticulate venation, unequally 2-lobed at apex. Inflorescence lateral, racemose, few- to many-flowered. Flowers white, sometimes tinged with green, brown or pink. Sepals and petals free. Lip entire, often similar to sepals and petals; base with a long spur. Column often narrow towards base, enlarged at level of
stigma; pollinia 2; stipes 1. Derivation of name: Aer (Gr); angis (Gr), meaning air-vessel, probably referring to the long hollow spurs. Worldwide: c. 60 in tropical and South Africa, one extending to Sri Lanka Mozambique: 7 taxa. |
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