Romulea flava (Lam.) M.p.de Vos

Species

Angiosperms > Asparagales > Iridaceae > Romulea

Characteristics

Plants 50-300 mm high. Corm globose, obliquely flattened toward base with crescent-shaped basal ridge, 6-15 mm diam., tunics splitting into fine parallel fibrils along ridge. Stem subterranean or aerial, exserted up to 200 mm, elongating in fruit. Leaves 3 or 4, lowermost 1 basal, terete or compressed-cylindrical, narrowly or widely 4-grooved, 1-3 mm diam., glabrous or ciliolate along rib margins, cauline leaves clustered at stem apex, sheaths often wide. Peduncles up to 8, up to 70 mm long, semiterete, glabrous or ciliolate along angles, sharply arcuate in fruit or ultimately suberect; outer bracts green with narrow membranous margins, 8-20(-28) mm long, striate or lightly ribbed (4 to 6 veins/mm), inner bracts entirely membranous or sometimes submembranous in centre, central portion sometimes conspicuously brown-spotted, with broad membranous margins streaked or speckled with brown. Flowers pale or sulphur-yellow, white, pale blue or rarely pink, with yellow or greenish cup, outer tepals frequently green or greenish brown on reverse, white forms sometimes scented; perianth tube funnel-shaped, 3-7 mm long; tepals elliptic or oblanceolate, 10-30 x 2-12 mm. Filaments 4-7 mm long, pilose basally, yellow; anthers 3-7 mm long. Style dividing shortly below or beyond anther tips, branches 2 mm long, divided halfway. Capsules ellipsoid or shortly cylindric, ± 10 mm long.
More
Plants 100-550 mm long. Corm with a crescent-shaped basal ridge. Stem short, hidden, or up to 300 mm long. Basal leaf single in long-stemmed forms, filiform or compressed cylindrical, 100-550 x 0.8-3(-4) mm, suberect or curved, sometimes minutely ciliate on the rib margins, grooves wide or narrow. Inner bract membranous or with the centre sometimes submembranous. Flowers (18-)20-40 mm long, yellow or white, sometimes blue, blue-violet or rarely pink, cup yellow or greenish yellow, outer segments green or greenish brown on the backs. Perianth tube 3-7 mm long; segments 10-30 x 3-12 mm. Filaments 4-7 mm; anthers 4-7 mm, golden yellow. Style 8-15 mm; stigmas more or less at the anther tips. Capsules shortly cylindrical, on recurved peduncles which straighten later.
Cormous geophyte, mostly 50-150 mm tall, stem underground or reaching 150 mm above ground; corm with a crescent-shaped basal ridge. Leaves 3 or 4, often wider and clasping below. Flowers white or yellow (occasionally blue or pink with yellow cup), outer tepals uniformly green outside, sometimes scented; outer bract green with narrow hyaline margins, inner bract ± membranous, often brown-streaked.
Cormous geophyte, 5-30 cm, corm with an oblique basal ridge, basal ridge fibrous, stem short or branching just above ground. Basal leaves 1 or 2, clasping below. Flowers white or yellow, rarely blue or pinkish, with yellow cup, inner bracts papery.
See Romulea flava var. minor.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
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Mature height (meter) 0.05 - 0.3
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Environment

Light -
Soil humidity 4-6
Soil texture 1-6
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Usage

Uses -
Edible -
Therapeutic use -
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Animal toxicity -

Cultivation

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Images

Romulea flava unspecified picture

Distribution

Romulea flava world distribution map, present in Australia and South Africa

Identifiers

LSID urn:lsid:ipni.org:names:440731-1
WFO ID wfo-0000786059
COL ID 798LQ
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Romulea recurva Trichonema recurvum Trichonema latifolium Ixia flava Ixia recurva Ixia reflexa Ixia pudica Bulbocodium flavum Geissorhiza pudica Ixia pudica Romulea bulbocodioides var. latifolia Romulea rosea var. pudica Romulea bulbocodioides var. elongata Romulea rosea var. reflexa Romulea flava

Lower taxons

Romulea flava var. viridiflora Romulea flava var. minor Romulea flava var. hirsuta Romulea flava var. flava