Wurmbea kraussii Baker

Species

Angiosperms > Liliales > Colchicaceae > Wurmbea

Characteristics

Corm oblong-ovoid to subglobose, 7-20 x 6-15 mm, tunics brown, forming a sheath around the firm underground neck, 10-80 mm long. Stem 30-150 mm long from the corm to the upper leaf, 3-5 mm in diam. Basal leaf solitary, usually erect, green, narrowly linear, 25-150 x 1.0-2.0 (-2.5) mm, margin involute to make leaf appear subterete; base narrow, sheathing. Cauline leaves 1 or 2, spathaceous; lower cauline leaf inserted three quarters up the stem; upper cauline leaves usually reaching the inflorescence, 10-30(-40) x (2.5-)3.0-7.0 mm, acuminate. Inflorescence spicate, 1-6(-10)-flowered, rachis 10-35 mm long with flowers spaced 3-8 mm apart. Perianth: 5-12 mm long; tepals 6, stellately spreading, with 3-7 veins running from the tip to the base; white to pink-mauve-purple, sometimes speckled with small rectangular flecks; tube campanulate, 0.7-1.5 (-2.0) mm long; lobes somewhat clawed basally 4-10 x 1.5-3.5 mm, oblong or elliptic-oblong to lanceolate-oblong, apically obtuse to subacute. Nectary distinctly raised, boat-shaped with an entire or shallowly bilobed obtuse free apex, 2-3 mm long, white or mauve-tipped or purplish-mauve. Filaments white to pink-mauve-purple, straight, 1.5-5.0 mm long. Anthers sometimes maroon in younger flowers, turning golden yellow in mature flowers, oblong, 0.7-1.8 x 0.5-1.0 mm. Pistil: ovary green basally, purplish-pink apically and with age, oblong, markedly 3-angled, 3-8 mm long; styles white or light purple to pink, conical, subulate, 2-4 mm long; stigmas suberect, small, capitate. Capsule elliptic-oblong, 3-angled, 7-13 mm long including styles, 3-5 mm broad, greenish-brown, with suberect or somewhat spreading subulate styles 2-4 mm long. Seeds numerous, subglobose, 0.9-1.2 mm long, light brown, with minutely reticulate-foveate surface. Flowering period: July to December, but mostly September to October.
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Corm oblong-ovoid to subglobose, 0.7-2 cm long, 0.6-1.5 cm wide, with dark brown or sometimes reddish brown tunics produced into a firm neck 8 cm long. Stem above ground 3-15 cm high (or somewhat longer in fruiting stage). Basal sheath vaginate; free apex short, ovate-oblong, membranous, obtuse or mucronate, distinctly veined. Basal leaf solitary, 2.5-1  long (or even longer in fruiting specimens), 1-2(-2.5) mm wide, linear-filiform, subterete, shallowly channelled adaxially, glabrous. Cauline leaves1 or 2, spathaceous, close to the inflorescence, 1-3(-4) cm long, (2.5-)3-7 mm wide near the base, acuminate. Spike 1-6(-10)-flowered, usually short, up to 3.5 cm long, with flowers spaced 3-8 mm apart. Perianth 6-12 mm long, pure white or pink-mauve-purple, with stellately spreading segments; perianth tube 0.7-1.5(-2) mm long; free segments 5-10 mm long, 1.5-3.5 mm wide, oblong or elliptic-oblong to lanceolate-oblong, basally somewhat unguiculate, usually distinctly 3-7-veined, sometimes speckled with small rectangular dots, apically obtuse to subacute. Nectary distinctly elevated, boat-shaped with an entire or shallowly bilobed obtuse free apex, 2-3 mm long, white or mauve-tipped or purplish mauve. Filaments 3-5 mm long, white or light-coloured. Anthers oblong, 0.7-1.8 mm long, 0.5-1 mm wide, reddish brown. Pistil oblong, markedly triquetrous, 5-8 mm long; free styles 4 mm long, green with purplish tinge and whitish style tips, brownish when dry except for the light style tips, tapering to small capitate stigmas. Capsule elliptic-oblong, 7-13 mm long incl. styles, 3-5 mm broad, greenish brown,with suberect or somewhat spreading subulate styles 2-4 mm long. Seeds numerous, subglobose, 0.9-1.2 mm long, light brown, with a minutely reticulate-foveate surface.
Geophyte, 0.07-0.15 m high. Corms oblong-ovoid, tunics dark to reddish brown, subterranean neck 10-80 mm long. Stem above ground, 30-150 mm high; basal sheath vaginate. Leaves 3, alternate, cauline leaves spathaceous, blade narrowly ovate, apex acuminate, base wide. Inflorescence a spike-like cyme, 1-6(10)-flowered. Perianth, segments 6-12 mm long, tube ± 2 mm long, membranous; lobes lanceolate-oblong, unguiculate, pink-mauve-purple, speckled. Nectary elevated, boat-shaped, 2-3 mm long, white or purplish mauve. Stamens: filaments whitish, 3-5 mm long; anthers oblong, reddish brown. Ovary oblong, 3-angled; styles free, 2-4 mm long; stigmas capitate. Flowering time Aug.-Dec. Fruit an elliptic, oblong capsule; styles persistent, subulate, spreading.
Geophyte, up to 0.15 m high. Leaves one narrow basal leaf, enclosed with stem in basal sheath; 1 or more broad-based cauline leaves, blade spathaceous, 10-30 mm long, 3-7 mm at base, apex acuminate. Flowers: in a spike, 1-6-flowered; perianth with tube 0.7-1.5 mm long, segments distinctly veined, nectary raised with obtuse or emarginate tips free, white or pinkish; Jul.-Dec.
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Growth form herb
Growth support free-standing
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Mature height (meter) 0.07 - 0.15
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Environment

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Soil humidity 4-9
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Hardiness (USDA) 8-11

Usage

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Cultivation

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Distribution

Wurmbea kraussii world distribution map, present in Lesotho, eSwatini, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:543580-1
WFO ID wfo-0000751850
COL ID 5C446
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Wurmbea kraussii