Tritonia gladiolaris (Lam.) Goldblatt & J.C.Manning

Species

Angiosperms > Asparagales > Iridaceae > Tritonia

Characteristics

Plants (150-)200-500(-800) mm high. Corm subglobose to depressed-globose, 10-20 mm diam.; tunics of fine-textured fibres, sometimes extended into a fibrous or papery collar. Stem erect or flexed outward above upper leaf and inclined, simple or with 1(2) suberect branches from upper 1/2. Leaves 5 to 8, suberect, firm-textured, narrowly lanceolate or rarely falcate, (40-)150-300(-500) x (5-)7-10(-18) mm, acute or acuminate, with raised main vein and strong submarginal vein ± 1 mm from margin, usually not reaching base of spike, cauline leaves ± overlapping in lower 1/2 of stem, uppermost dry and clasping, bract-like. Spike suberect or inclined, nearly 2-ranked, moderately dense or lax, 4-to 12(-15)-flowered; bracts dry, papery, brown or pale-translucent below, densely speckled and flecked with dark brown in upper 1/2, outer 7-10(-12) mm long, ± 3-to 5-toothed with middle tooth reduced or irregularly toothed, inner slightly shorter, bifid. Flowers slightly zygomorphic, cream-coloured to pale yellow, straw or flushed with pale apricot near tips or on reverse, usually with dark veins, unscented; perianth tube obliquely funnel-shaped, 10-15 mm long with basal 2-4 mm narrow, curved outward, widening up to 8-10 mm diam.; tepals subequal in length, oblong to obovate, (15-)18-20(-23) mm long, obtuse, spreading, dorsal slightly wider, 8-10(-14) mm wide, others 5-8(-10) mm wide, lower median tepal sometimes with low thickened basal ridge. Filaments unilateral, arcuate, 7-12 mm long, included; anthers 5-9 mm long, curved, apiculate, pink or yellow. Style dividing near apex of anthers or beyond, branches 3-5 mm long. Capsules subglobose or obovoid, ± 8 mm long.
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Herb 30–60 cm high. Corm to 2 cm diam.; tunic of netted fibres forming a distinct neck. Leaves 4–8, linear-lanceolate, 7–30 cm long, 7–18 mm wide, rather soft-textured with 3–5 pale prominent veins. Spike slightly flexuose, 7–15-flowered. Bracts oblong, 8–12 mm long, scarious, dark brown. Flowers zygomorphic, funnel-shaped, cream, finely dark-veined. Perianth tube 1–1.5 cm long, expanded evenly from base; lobes oblong to oblanceolate, 1.5–2.5 cm long, straight with spreading apices; dorsal lobe wider than others. Stamens unilateral; filaments curved, c. 10 mm long; anthers 7–9 mm long, yellow. Ovary globose, c. 3 mm diam.; style exceeding stamens; branches filiform to cuneate, c. 4 mm long. [See also Green (1994: 520), as Tritonia lineata.]
Perennial herb, geophyte, 0.15-0.60 m high; corm globose, tunics of finely netted fibres; stem simple or 1-branched. Leaves ensiform to lanceolate, erect to spreading, with prominent vein near each margin, 5-10 mm wide. Bracts membranous, brown above. Inflorescence a secund, lax spike; cream-coloured or yellow, with dark veins, slightly zygomorphic; perianth tube 10-15 mm long, funnel-shaped; tepals 15-20 mm long, subequal, obovate-lanceolate, dorsal erect, lower with thickened median ridge. Stamens curved; filaments 7-12 mm long; anthers unilateral, pale or dark striped; pollen cream-coloured. Style curved. Flowering time Aug.-Nov.
Cormous geophyte to 60 cm. Leaves sword-shaped with prominent submarginal veins. Flowers weakly bilabiate, pale yellow, occasionally orange with dark veins, lower tepals or only lower median tepal with thickened longitudinal ridges.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 0.1 - 0.5
Mature height (meter) 0.18 - 0.55
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity -
Soil texture 5-6
Soil acidity 2-8
Soil nutriment -
Hardiness (USDA) 11-12

Usage

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

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Tritonia gladiolaris unspecified picture

Distribution

Tritonia gladiolaris world distribution map, present in Australia, Lesotho, Norfolk Island, New Zealand, and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:77079440-1
WFO ID wfo-0000810524
COL ID 5952K
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Montbretia lineata Tritonia catenularis Tritonia flavida Gladiolus lineatus Gladiolus venosus Ixia gladiolaris Ixia lineata Ixia reticulata Tritonia krausii Tritonia tristis Watsonia lineata Ixia venosa Sparaxis lineata Tritonixia lineata Tritonia lineata Waitzia lineata Tritonia lineata var. parvifolia Tritonia gladiolaris