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Information Glabrous epiphytic rarely lithophytic herb, forming clumps.Pseudobulbs 1.5–18 cm tall, 0.3–1.2 cm wide at base, conical or cylindrical, covered with membranous sheaths when young, 1-leafed.Leaf 3–21(36) × 1.2–5.5 cm, ovate, obovate or elliptic, acute or apiculate, often undulate on the margin, auriculate at base, articulated 2–6 mm above the apex of the pseudobulb.Inflorescence (floral axis) usually longer than the leaf, erect or arching, 5–30 cm long, usually branched, densely many-flowered.Flowers white or yellow-green (outside the Flora Zambesiaca area they may be pink or purple).Pedicel and ovary 6 mm long; bracts 2.5–5 mm long, ovate-triangular, acuminate.Dorsal sepal 4–8 × 2–4.5 mm, ovate, acute; lateral sepals 5–8 × 3–6 mm, obliquely triangular, apiculate, slightly keeled on the outside, forming with the column foot a conical mentum up to 7 mm high. Petals 3.5–7.5 × 1–2.5 mm, linear to oblanceolate.Lip 4–7.8 × 3–6 mm, recurved, 3-lobed in the apical half, with a yellowish, fleshy central callus; mid-lobe c. 3 × 2 mm, subquadrate, apiculate; side lobes porrect, rounded.Column 0.5–3.5 mm long.

Information Small epiphytic or lithophytic herb, forming clumps.Pseudobulbs 2.5–9 × 0.7–1.2 cm, ellipsoid or ellipsoid-oblong, somewhat compressed, 2–3-leaved.Leaves 3–8 × 0.6–1.4 cm, oblong or oblong-lanceolate, ± obtuse, conduplicate at the base, glaucous green, often purple-edged, fully developed by flowering time.Inflorescence (floral axis) 5–8 cm long, 4–8-flowered, the peduncle and rhachis pubescent.Pedicel and ovary 7–10 mm long, slender, pubescent; bracts 4–6 × 4–5 mm, rhomboid-ovate, acuminate, ± papery, pubescent, whitish.Flowers pubescent on the outside, sepals and petals greenish-yellow, lemon-yellow to buff, drying yellow, lip white with purple veins on the side lobes and a brown spot at the base of the column foot.Dorsal sepal 7–8 × 3.2–4.3 mm, ovate; lateral sepals 8–10 × 4–5 mm, triangular-ovate, acute, keeled on the outside, forming a mentum 3.5–4 mm long.Petals 5.5–6.5 × 1 mm, oblanceolate, incurved.Lip very fleshy, geniculate and hard to flatten, 5.5–6.5 × 4–4.5 mm, 3-lobed at about halfway, with a callus at the junction of the lobes, the callus fleshy and densely covered with papillose hairs, the hairs reaching the base of the lip; mid-lobe 3–5 × 2.5–3.5 mm, ovate, acute, rugulose; side lobes erect, rounded.Column 1.5 mm long.

Information Epiphytic, occasionally lithophytic or terrestrial perennial herbs.Stems usually forming pseudobulbs, clustered or less commonly spaced out on a creeping rhizome, sometimes branched or superposed (emerging from nodes above the base of the previous pseudobulb), 1- to several-noded, with 1 to several leaves.Leaves linear, lanceolate, oblanceolate or elliptic, varying in texture.Inflorescence (comprising peduncle, rhachis and flowers) 1- to many-flowered, simple or branching.Floral bracts erect to reflexed, setiform, lanceolate, ovate or obovate, acute or acuminate to mucronate.Flowers usually non-resupinate, very small or medium-sized, rarely large, usually fragrant, often pubescent, green, yellow, white, pink, mauve or orange, rarely red.Dorsal sepal lanceolate to ovate; lateral sepals ± oblique, joined to the column-foot to form a mentum.Petals linear to obovate.Lip usually 3-lobed but sometimes entire, with or without a basal callus, glabrous, pubescent or farinose, often recurved, sometimes fleshy and difficult to flatten without breaking.Column porrect, usually short and stout with a ± elongate foot; pollinia 2, ovoid; stipe 1, square or sub-triangular to oblong or linear; viscidium small to large, round or ellipsoid; rostellum usually obscure, bifid in front, rarely slightly elongated or beak-like.

Information Small epiphytic herb to c. 12 cm high, forming clumps.Pseudobulbs 1–2 × 0.5–1 cm, ovoid to ovoid-conical, 2–3-leaved.Leaves 5–10.5 × 0.7–2 cm, oblong to oblanceolate, dark green, sometimes purple-edged.Inflorescence (floral axis) erect, longer than the leaves, 2–6-flowered.Peduncle 3–5 cm long; pedicel and ovary 5 mm long; bracts 5–7 × 4–5 mm, ovate, mucronate; all pubescent.Flowers sometimes strongly scented, variable in size and colour; the measurements given are for plants from the Flora Zambesiaca area.Sepals and petals green or yellow-green, lip white with purple veins on the side lobes.Dorsal sepal 11–12 × 5 mm, ovate, acute; lateral sepals 11–12 × 7–8 mm, obliquely triangular, acute; mentum c. 9 mm high.Petals c. 9 × 2 mm, oblanceolate.Lip strongly recurved, fleshy and hard to flatten, 9–10 × 7 mm, 3-lobed at about the middle, with a conical callus at the junction of the lobes; mid-lobe 4–5 × 3–5 mm, ovate, glabrous; side lobes erect, rounded; disk densely clavate pubescent.Column short and stout, c. 3 mm long.

Information Small epiphytic, occasionally lithophytic, herb.Pseudobulbs 10–20 × 7–8 mm, ovate to conical, green or reddish, 2–3-leaved.Leaves 4–12 × 1–1.5 cm, lanceolate, oblong-lanceolate or oblanceolate, often purple-tinged or with a purple line around the edge.Inflorescence (floral axis) to 15 cm long, fairly densely up to c. 20-flowered.Peduncle, pedicel, ovary and bracts all minutely pubescent.Pedicel and ovary c. 7 mm long; bracts 7–14 mm long, ovate, acuminate.Sepals and petals yellowish or yellow-brown, tinged with purple, becoming deep orange-brown as the flowers age; lip white with purple spotting on the side lobes and centre of mid-lobe.Sepals sparsely pubescent; dorsal sepal 9–12 × 2–4 mm, lanceolate, acuminate; lateral sepals 9–13.5 × 5.5–7 mm, obliquely lanceolate, somewhat falcate, long acuminate, keeled on the outside; mentum conical, 4.5–5 mm high.Petals 6.5–7.5 × 0.5–2 mm, narrowly oblanceolate.Lip strongly recurved, hard to flatten, 9–11 × 5 mm, 3-lobed with a long claw; mid-lobe 5.5–6 × 2–4 mm, oblong-lanceolate, acuminate, fleshy, bullate; side lobes erect, with a fleshy somewhat papillose callus lying between them.Column 1 mm long.

Information Epiphytic, occasionally lithophytic, herb.Pseudobulbs clustered, 2.5–4.5 × 1–1.2 cm, oblong, somewhat bilaterally flattened, ribbed, usually with 2 nodes, yellowish, 2–4-leaved.Leaves distichous, 8–17 × 1–2.4 cm, ligulate, conduplicate, absent or just about to develop at flowering time.Inflorescence (floral axis) 12–30 cm tall, pubescent, laxly to c. 15-flowered.Pedicel and ovary 8–10 mm long, slightly arched so that the flowers face down; bracts up to 6 × 4 mm, broadly ovate, acuminate.Flowers orange, petals with a red central line, lip with a magenta tip and red veins on the side lobes.Sepals fleshy, pubescent on outer surface; dorsal sepal 8–9 × 4–6 mm, ovate, acute; lateral sepals 10–12 × 6–8 mm, obliquely triangular, keeled on the outside; mentum 6–10 mm long, rounded.Petals 6 × 2–3 mm, oblanceolate.Lip 8–10 × 7–8 mm, fleshy, hard to flatten, 3-lobed at about halfway with a yellow, clavate pubescent callus at the junction of the lobes; mid-lobe 4 × 3 mm, ovate, papillose; side lobes erect, rounded.Column and column foot pubescent, free part c. 1 mm long; anther cap violet.

Information Small, epiphytic or lithophytic herb, forming dense mats, flowering when leafless.Pseudobulbs 10–15 × 10–13 mm, squat, onion-shaped, shiny green or purplish, wrinkled when old, 2–3-leaved.Roots long, stout, to 4 mm in diameter.Leaves up to 15 × 0.5 cm, linear, grass-like.Inflorescence (floral axis) 3–15(35) cm tall; rhachis short, 1–2 cm long, with a few short branches, densely many-flowered.Flowers pale to deep pink, occasionally white, the lip with a large oblong bright yellow callus in the centre.Pedicel and ovary 4–5 mm long, slender, purple.Dorsal sepal c. 2.5 × 1.3 mm, ovate, obtuse; lateral sepals c. 4 × 1.6 mm, ovate, forming with the column foot a narrow, cylindrical mentum c. 2 mm long.Petals c. 3 × 1.2 mm, spathulate.Lip entire, 3.8–5 × 1.5–3.5 mm, obovate, frilly-edged, with a large, oblong, rugulose callus in the centre.Column 1–1.5 mm long.

Information Much-branched perennial herb 14–36 cm. tall, with a woody, nodose rootstock terminating in a large tuber; stem and branches slender, terete or bluntly quadrangular, more or less densely furnished with long, whitish hairs which may be patent, ascending, or a mixture of both. Leaves sessile or very shortly petiolate, 0.6–3 × 0.4–1.3 cm., lanceolate to lanceolate-ovate, shortly narrowed to subcordate at the base, acute to subacute at the apex, moderately to densely furnished on both surfaces with shorter and subappressed to longer and patent hairs. Inflorescence sessile or almost so on the uppermost pair of leaves, greenish to whitish, shortly oblong-ovoid, (sometimes subglobose on the lowest branches), 1–4.5 × 1–1.4 cm., axis white-pilose. Bracts lanceolate, 4–6.5 mm. long, more or less densely furnished with ascending whitish hairs at least centrally, whitish-membranous except for the green midrib, which is excurrent into an arista at least half the length of the lamina. Bracteoles 5–7.5 mm. long, ovate-lanceolate, indumentum similar, the terminal arista commonly longer. Flowers finally somewhat indurate at the base, not fused to the bracteoles. Tepals all lanceolate, broadly hyaline-margined, the green central portion with three distinct white nerves; outer 2 tepals 4–6 mm. long, the midrib excurrent in a short often glabrous mucro, more or less densely appressed-pilose along the green central portion; inner 3 slightly shorter, more pilose about the apex, the mucro absent or obscured by hairs. Perianth apparently falling without the bracteoles. Stamens 2–2.5 mm. long, filaments glabrous; pseudostaminodes small, oblong to narrowly spathulate, c. 1 mm. long, minutely denticulate with no dorsal scale, quite glabrous. Ovary obpyriform, c. 1 mm. long, with a faint apical keel; style slender, c. 2 mm. long. Ripe utricle oblong-ovoid, c. 3 mm. long, narrowly truncate at the apex; seed c. 2.75 mm. long, oblong-ovoid, yellowish brown, shining, obscurely reticulate or almost smooth.