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Angraecum stella-africae
ENCYCLOPÆDIA
ANGRÆCORUM
Angraecum stella-africae

Genus Angraecum

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Angraecum stella-africae - Photo courtesy © Bart Wursten
Angraecum stella-africae

Kingdom

Plantae

Division

Magnoliophyta

Class

Liliopsida

Order

Asparagales

Family

Orchidaceae

Subfamily

Vandoïdeae Endlicher

Tribe

Vandaeae Lindley

Subtribe

Angraecinae Summerhayes

Alliance

Angraecum

Genus

Angraecum

Genus Abreviation

Angcm

Common Name

 

Section

 

Species

Angraecum stella-africae

Authority

P.J. Cribb

Source

- P.J. Cribb in la Croix et al., Malawi Orch. 1: 34 (1983).
- la Croix et al., Orch. Malawi: 240 (1991). Type: Malawi, near Mzuzu, la Croix 255 (K, holotype).

Synonyms

- Angraecum sp. of Ball, South. African Epiphyt. Orch.: 62 (1978).
- Angraecum sp. aff. rutenbergianum of Stewart et al., Wild Orch. South. Africa: 257 (1982).

Etymology

 

Distribution

Malawi N: South Viphya, near Mzuzu, 1350 m, fl. 28.i.1982, la Croix 255 (K).

S: Mulanje Distr., Ruo Gorge, in riverine forest, 1500 m, fl. 21.i.1984 (sight record only).

Range

South Africa (Mpumulanga)

Altitude

1250-1500 m

Habitat

Woodland, rarely riverine forest

Life Form

Epiphytic

Flowers

see Description

Flowering time

 

Fragrance

 

Description

Dwarf, epiphytic herb; stem 1-2 cm long; roots 2-3 mm in diameter, pale grey, slightly verrucose.Leaves up to 6 but usually 3-4, distichous, dark green, 3-5.5 cm × 6-8 mm, linear, coriaceous, obscurely 2-lobed at the apex.Inflorescences 1-2, arising below the leaves, 1-flowered.Peduncle 3-4 mm long; bract 4 mm long, ovate.Pedicel and ovary 20 mm long, the ovary winged, triangular in cross-section.Flowers large for size of plant, glistening white, the tip of the spur green.Sepals 20-25 × 5 mm, lanceolate, acute, spreading; petals similar but smaller, 18-20 × 3 mm.Lip 22-26 × 13-15 mm, ovate, elliptic, concave, subacute; spur 12-15 cm long, very slender, sigmoid or coiled in bud, becoming straight and pendent.Column stout, 2-3 mm long.Capsule c. 2.5 cm long, winged, remaining on the plant for over a year before dehiscing.

Notes

This species seems to be self-pollinating because although the flowers quite often fail to open the capsules apparently develop normally.

Links

FZ volume:11 part:2 (1998) Orchidaceae
Vumba Nature