Angraecum stolzii Schltr.

Orchidaceae, I. la Croix & P.J. Cribb. Flora Zambesiaca 11:2. 1998

Morphology General Habit

Pendent epiphytic herb; stem up to 40 cm long, leafy towards the apex, woody below this; roots many, c. 2 mm in diameter.

Morphology Leaves

Leaves distichous, dark green, 4.5–9 cm × 4–9 mm, linear to ligulate, sometimes falcate, acutely and very unequally 2-lobed at apex, one lobe often ± absent, the other to 15 mm long.

Morphology Reproductive morphology Inflorescences

Inflorescences 1-flowered, borne opposite the leaf axils, arising from the same place in successive years and often forming a short, woody spur. Peduncle 5–17 mm long, filiform; pedicel and ovary twisted, 6–7 mm long; bracts 1–2 mm long.

Morphology Reproductive morphology Flowers

Flowers orange-straw coloured, 17–20 mm in diameter.

Morphology Reproductive morphology Flowers Perianth

Sepals 6.5–9 × 1.5–3 mm, lanceolate, acute; petals similar but slightly smaller.

Morphology Reproductive morphology Flowers Labellum

Lip boat-shaped, 5–8 × 3–5 mm, including a 2 mm long acumen; spur 8–9 mm long, slender but slightly swollen at the tip.

Morphology Reproductive morphology Flowers Column

Column 1–1.7 mm long.

Orchidaceae, V. S. Summerhayes. Flora of Tropical East Africa. 1968

Morphology General Habit

An erect or pendent epiphyte 2.5–40 cm. long.

Morphology Roots

Roots 0.5–1.2 mm. in diameter.

Morphology Leaves

Leaves 2-ranked, all along the stem, linear, falcate, unequally acutely bilobed at the apex, 4.5–6.2 cm. long, 4–9 mm. wide, twisted at the base to lie in one plane, grass-green.

Morphology Reproductive morphology Inflorescences

Inflorescences 1–4 per node, 2–3 cm. long, 1-flowered; peduncle 9–17 mm. long; bracts ovate, acute or apiculate, 1.5–2 mm. long.

Morphology Reproductive morphology Flowers

Flowers cream or yellow-green turning orange with age; pedicel and ovary twisted, 4 mm. long.

Morphology Reproductive morphology Flowers Calyx

Sepals lanceolate, acuminate, 7.2–9 mm. long, 1.6–3 mm. wide.

Morphology Reproductive morphology Flowers Corolla

Petals lanceolate, acuminate, 7–9 mm. long, 1.2–1.6 mm. wide.

Morphology Reproductive morphology Flowers Labellum

Lip ovate, acuminate and recurved at the tip, 5–7.5 mm. long, 2.7–5 mm. wide.

Morphology Reproductive morphology Flowers Spur

Spur slighdy sigmoid, filiform, 5.5–9 mm. long.

Morphology Reproductive morphology Flowers Column

Column 1.5–1.7 mm. long.

Morphology Reproductive morphology Fruits

Fruits 1.6–1.8 mm. long.

Figures

Fig. 115.

Habitat

In montane and riverine forest; 1700–2500 m.

Distribution

T3 T6 T7