Ixia robusta (G.J.Lewis) Goldblatt & J.C.Manning

Species

Angiosperms > Asparagales > Iridaceae > Ixia

Characteristics

Plants mostly 0.5-1.0 mm high. Corm subglobose, mostly 14-18 mm diam., tunics of firm, wiry fibres accumulating in dense mass, with small cormlets at base. Leaves usually 4 (5 or 6), lower 3 or 4 lanceolate to subfalcate, mostly 8-14 mm wide, ± 1/4-1/3 as long as stem, margins thickened, usually plane, uppermost 1 or 2 leaves sheathing stem below spike. Stem erect, sheathed below ground by collar of fibres, with up to 10 short, slender, ascending branchlets subtended by truncate-apiculate bracts and prophylls 0.5-1.0(-2.0) mm long. Main spike suberect, mostly 4-to 6-flowered, lateral spikes ascending, mostly 2-to 6-flowered; bracts translucent becoming tinged brown at tips, outer with 3 dark veins, (6-)8-10 mm long, 3-toothed or bluntly 3-lobed, subequal or inner slightly longer, with 2 dark veins and forked apically. Flowers ± nodding, pale pink with white cup, faintly acrid-metallic-scented or apparently unscented; perianth tube 7.5-10.2 mm long, widely funnel-shaped, flaring in upper 4-5 mm; tepals subequal, narrowly ovate to subspathulate, (15-)17-20 x 7-9 mm, proximal ± 3 mm forming part of floral cup, spreading distally. Filaments ± 4 mm long, inserted ± 3.5 mm above base of tube; anthers 3.5-4.0 mm long, half exserted from tube but included in floral cup, yellow. Style dividing opposite middle 1/3 of anthers, branches 1.5-2.0 mm long, extending between anthers.
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Like I. rapunculoides but mostly 0.5-1.1 m tall, leaves 4 or 5, lower 3 or 4 leathery, lanceolate. Flowers pink, acrid scented, perianth tube 8-9 mm long. Late Aug.-Sept.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.25 - 0.55
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity -
Soil texture 4-5
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Ixia robusta world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:77091730-1
WFO ID wfo-0000835833
COL ID 6NC79
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ixia robusta Ixia rapunculoides var. robusta