Romulea dichotoma Baker

Species

Angiosperms > Asparagales > Iridaceae > Romulea

Characteristics

Plants (50-)100-200(-400) mm high. Corm ovoid, 6-15 mm diam., oblique with crescent-shaped basal ridge, tunics woody, with clusters of converging fibrils on ridge. Stem aerial, exserted up to 300 mm, branching near apex, glabrous or ciliate on angles in upper part. Leaves 2 to 5, lower 1 basal, linear and ± I-shaped in section, ± broadly 4-grooved, 1-2 mm diam., marginal ribs reduced and rounded, without secondary veins, median ribs flange-like or narrowly winged, curving over partially obscuring lateral ribs, often pubescent or villous on margins, cauline leaves clustered near top of stem. Peduncles up to 3, terete, glabrous or ciliolate on angles, spreading in fruit; outer bracts green with narrow colourless membranous margins, 12-20 mm long, striate (5 to 7 veins/mm), inner bracts with wide, reddish or brown-flecked membranous margins. Flowers yellow, orange or pink to purple, with small yellow cup with V-shaped marks in base, outer tepals greenish or reddish or darkly veined or feathered on reverse; perianth tube funnel-shaped, 3-5 mm long; tepals oblanceolate, 15-32 x 6-10 mm. Filaments ± included in cup, 4-8 mm long, minutely pilose basally, yellow; anthers 4-7 mm long, apically connate when young, yellow. Style dividing near anther apices. Capsules oblong, ± 10 mm long.
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Stem usually dichotomously branched near the top, the branches more or less divaricate. Basal leaf single (or rarely two in young plants, the first leaf then shorter than the second), filiform or somewhat 4-angled, 1-2 mm wide, with the two lateral ribs narrower than the two median ones, grooves narrow or wide. Bracts green, inner with wide membranous margins which are colourless in the lower half and reddish brown in the upper. Flowers pink or rarely salmon-pink, with 1-3 pink-purple veins in the throat, cup greenish or golden-yellow with V-shaped marks, outer segments on the backs mostly with 3-5 reddish brown veins and fine feathered veining. Capsules on straight, patent peduncles.
Perennial herb, geophyte, 0.10-0.35 m high; stem erect, usually dichotomously branched above. Leaves 2 or 3, basal 1, narrowly 4-grooved, sometimes minutely hairy. Bracts green, narrowly triangular, margins membranous. Flowers 1-4, pink; cup yellowish; perianth tube 3-5 mm long, funnel-shaped, minutely pilose at base; tepals 16-32 mm long, elliptic or obovate, subobtuse to acute. Stamens erect; filaments 4-8 mm long, golden-yellow, ± pilose in lower half; anthers 4-7 mm long, yellow with dark longitudinal lines. Style 10-15 mm long; stigma ± 1 mm long. Flowering time Sept.-Dec. Capsule cylindrical.
Cormous geophyte to 35 cm, corm with an oblique basal ridge, fibrils convergent in clusters, stem branching divaricately above ground, often ciliate. Basal leaf usually solitary. Flowers pink to salmon with yellowish cup.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.1 - 0.28
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

Romulea dichotoma world distribution map, present in South Africa

Identifiers

LSID urn:lsid:ipni.org:names:440717-1
WFO ID wfo-0000786040
COL ID 6X8LL
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Romulea caplandica Trichonema dichotomum Romulea dichotoma Bulbocodium dichotomum Gladiolus dichotomus Gladiolus dichotoma Romulea rosea var. dichotoma