Ixia brevituba G.J.Lewis

Species

Angiosperms > Asparagales > Iridaceae > Ixia

Characteristics

Plants 150-300 mm high, stem either unbranched and then with scale-like leaves at aerial nodes, or with up to 2 short branches, erect below, inclined above, sheathed below by submembranous, red-brown cataphylls. Corm 12-20 mm diam., tunics of medium-textured, wiry, reticulate fibres, extending upward in papery collar 30-70 mm long. Leaves 3 or 4, basal, uppermost completely sheathing lower 2/3 of stem, blades suberect or lowermost slightly falcate, 1.5-2.0 mm wide, reaching to near top of stem, firm-textured, margins and midrib hyaline, lightly thickened. Spike inclined, nodding in bud, crowded, 5-7-flowered, branches fewer-flowered; bracts dry-membranous, translucent or flushed purple above, outer 5-7 mm long, acute or obscurely 3-dentate, inner ± as long as outer or slightly shorter, 2-veined and 2-toothed, margins connate in lower 1.5 mm around ovary. Flowers rotate, light purple with small dark purple stain in centre, lightly scented; perianth tube ± funnel-shaped, ± 2.3 mm long, filiform below and clasping style, flaring in distal 1 mm; tepals spreading and slightly concave distally, obovate, ± narrowed below into a short claw, 12-13 x 7-8 mm. Stamens symmetrically arranged, erect, filaments inserted at apex of tube, diverging above, 2.5 mm long, blackish purple, anthers ± oblong, 4.5-5.0 mm long, blackish purple, dehiscing laterally by narrow slits along entire length. Style dividing at or slightly above base of filaments, ± 2 mm long, branches filiform, involute, stigmatic at apex, purple, falcate, 2.0-2.5 mm long.
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Plants 150-300 mm high. Corm 12-20 mm diam., tunics of medium-textured, wiry, reticulate fibres, extending up in papery collar 30-70 mm long. Stem either unbranched and then with scale-like leaves at aerial nodes, or with up to 2 short branches, erect below, inclined above, sheathed at base by ± membranous, red-brown cataphylls. Leaves 3 or 4, basal, uppermost completely sheathing lower 2/3 of stem, blades suberect or lowermost slightly falcate, 1.5-2.0 mm wide, reaching to near top of stem, firm-textured, margins and main vein hyaline, lightly thickened. Spike inclined, nodding in bud, crowded, 5-to 7-flowered, branches fewer-flowered; bracts dry-membranous, translucent or flushed purple above, outer 5-7 mm long, acute or obscurely 3-dentate, inner ± as long as outer or slightly shorter, 2-veined and 2-toothed, margins united in lower 1.5 mm. Flowers rotate, light purple with small dark purple stain in centre, lightly scented; perianth tube ± funnel-shaped, ± 2.3 mm long, filiform below and clasping style, flaring in distal 1 mm; tepals spreading and lightly spooned distally, obovate, ± narrowed below into a short claw, 12-13 x 7-8 mm. Filaments inserted at apex of tube, diverging above, 2.5 mm long, blackish purple; anthers ± oblong, 4.5-5.0 mm long, blackish purple, dehiscing laterally along entire length. Style dividing at or slightly above bases of filaments, ± 2 mm long, branches filiform, involute, purple, falcate, 2.0-2.5 mm long.
Cormous geophyte, 200-300 mm tall, simple or with 1 or 2 short, distally spreading branchlets, nodding in bud. Leaves linear to sword-shaped, margins thickened. Flowers 4-7 in a lax spike, fewer on branchlets, light purple with a dark purple centre, style branches short, 2-2.5 mm long, perianth tube filiform, 2-2.5 mm long, tepals spreading, 12-13 mm long, stamens fully exserted.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.15 - 0.3
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 3-4
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 brevituba world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:439321-1
WFO ID wfo-0000784116
COL ID 3QFKG
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Ixia amethystina Ixia brevituba