11. Habenaria leptoceras Hook.,

Bot. Mag. 54: t. 2726. 1827. Fig. 2h

Terricolous herb. Leaves 9, sessile, distributed along the caulome; blade green, immaculate, membranaceous, flat, convolute, lanceolate to elliptic, obscurely parallel-veined, apex acute to rounded. Inflorescence in raceme, terminal, multiflowered, glabrous. Flowers resupinate, calcarate; sepals and petals pale green, immaculate; petals bifid; lip pale green, trilobed.

Distribution: Restricted to Brazil and endemic to the Atlantic Forest domain (Flora do Brasil c2020).

Specimen examined: 22º57’28’’ S, 43º10’44’’ W, 10 May 2017 (fl), R. Silva 2 (RFA).