Disa bracteata Sw.

African weed-orchid (en)

Species

Angiosperms > Asparagales > Orchidaceae > Disa

Characteristics

Plants to 300 (-500) mm tall; leaves linear-lanceolate, erect, 40-120 mm long. Inflorescences cylindrical, 20-120 mm long, numerous-flowered; bracts shortly overtopping the flowers, rarely much taller than the flowers, acuminate. Flowers green with the sepals usually tinted maroon. Median sepal shallowly galeate, broadly oblong, obtuse to acute, 3-4 mm long, falcate in side view; spur shallowly triangular, pendent, rounded to truncate, 3-4.5 mm long; lateral sepals patent, oblong, acute, 2.5-3.5 mm long. Petals erect, parªtially included in the galea, broadly obtriangulate in outline, acute, 2-2.5 mm long. Lip pendent, narªrowly oblong to lorate, often oblanceolate, 2-2.5 mm long. Anther pendent, c. 1 mm long; rostelªlum with a large central notch.
More
Terrestrial herb, geophyte, 0.3-0.5 m high. Leaves many, cauline, largest near base, linear-lanceolate. Inflorescence cylindrical, dense 20-120 mm long; bracts overtopping the flowers. Flowers many, green, sepals tinted maroon. Sepals: median sepal shallowly galeate, broadly oblong, obtuse to acute, 3-4 mm long; spur shallowly triangular, pendent, 3.0-4.5 mm long; lateral sepals patent, oblong, acute, 2.5-3.5 mm long. Petals erect, partially included in galea, obtriangulate, acute, 2.0-2.5 mm long. Lip pendent, narrowly oblong to oblanceolate, 2.0-2.5 mm long. Anther pendent, rostellum with large notch. Flowering time Sept.-Nov.
Leaves 6–10 in a loose rosette, narrowly lanceolate, 30–150 × 15 mm, tapered, light green, channelled, reducing in size up stem. Flower stem 200–400 mm tall, thick, fleshy; flowers and bracts forming a cylindrical spike to 200 mm long. Floral bracts closely overlapping, 20–30 mm long. Flowers c. 5 × 5 mm, yellowish with red suffusions, sepals and petals tipped with red, labellum yellow. Dorsal sepal hooded, with a pendent spur. Lateral sepals divergent or recurved. Petals obliquely erect, margins enclosed by dorsal sepal. Labellum protruding like a tongue, oblong, c. 3.5 × 1.5 mm, decurved.
Slender or robust, tuberous geophyte to 30 cm. Leaves linear-lanceolate. Flowers many in a dense raceme, green with sepals tinted maroon, spur pendent, 3-4.5 mm long, lateral sepals 2.5-3.5 mm long.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
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Mature height (meter) 0.25 - 0.45
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Environment

Favours open grassy situations and degraded sites, particularly partially cleared habitat, weed-infested country, disturbed areas, pasture, road embankments, track margins and road verges.
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Hardiness (USDA) 8-11

Usage

Uses -
Edible -
Therapeutic use -
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Cultivation

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Images

Disa bracteata unspecified picture

Distribution

Disa bracteata world distribution map, present in Australia and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:630067-1
WFO ID wfo-0000944305
COL ID 36RXK
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Monadenia australiensis Monadenia bracteata Monadenia micrantha Disa bracteata Disa micrantha Monadenia praetermissa Disa praetermissa