Thereianthus bracteolatus (Lam.) G.J.Lewis

Species

Angiosperms > Asparagales > Iridaceae > Thereianthus

Characteristics

Plants (80-)150-200(-300) mm high. Corm 10-15 mm diam., developing several large cormels at base; tunics of coarsely netted fibres, thickened and forming woody claws below, accumulating with age. Stem flexuose or flexed outward only above sheath of second leaf. Leaves 4(5), lowermost reaching base of spike or not, ± dry at flowering, linear, elliptic in section or terete, 70-170 x 0.5-1.5(-2.0) mm, leathery, with 3 ± equally veins or with main vein slightly more prominent, not thickened or raised when fresh but prominent when dry, uppermost leaf well separated from spike, entirely sheathing or with short blade 20-50 mm long. Spike erect, densely 7-15(-30)-flowered; bracts overlapping for ± 1/2 length, 8-10(-12) mm long and ± two internodes long, outer entirely brown and leathery, obtuse or truncate (rarely apiculate), conspicuously and closely veined, with narrow membranous margins, inner 1/2-3/4 as long as outer, ± membranous with narrow brown zones along veins. Flowers ± patent, purple to violet with dark blotches and streaks on longitudinal veins and especially midline; perianth actinomorphic; tube slightly curved, (7-)8-10(-15) mm long, funnel-shaped, usually exserted 2-6(-10) mm beyond bracts, rarely just included; tepals oblanceolate, subequal or inner slightly broader, spreading and slightly cupped, (10-)11-17 x 3-6 mm. Stamens ± declinate, sometimes weakly so and then ± central; filaments 8-10 mm long, exserted ± 6-8 mm from tube, usually flexed sharply upward apically; anthers all facing upward, usually white (rarely purple), 4-6 mm long; pollen white (brown when anthers purple). Style ± deflexed to lie beneath stamens, dividing opposite middle of anthers, branches 3-5 mm long, divided to near base. Capsules ovoid, ± 6 mm long. Seeds subglobose-or ellipsoid-angled, ± 2 mm long, chalaza truncate, brown, testa colliculate.
More
Cormous geophyte, 15-25 cm. Leaves terete without prominent veins. Flowers spreading, actinomorphic with declinate stamens, deep blue or purple with strongly purple-spotted veins, tube 7-15 mm long; bracts 8-12 mm long, strongly veined.
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 - 0.2
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light -
Soil humidity 1-3
Soil texture 5-6
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

Thereianthus bracteolatus world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:441500-1
WFO ID wfo-0000786933
COL ID 56CWD
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Micranthus triticeus Gladiolus punctatus Gladiolus triticeus Watsonia punctata Ixia punctata Beilia triticea Gladiolus bracteolatus Gladiolus subulatus Watsonia punctata var. triticea Beilia spicata var. triticea Thereianthus bracteolatus Watsonia triticea Watsonia subulata