Crotalaria barkae Schweinf.

Species

Angiosperms > Fabales > Fabaceae > Crotalaria

Characteristics

Annual or short-lived perennial, with a leading shoot up to 5(–10) dm. tall, much branched, with the lower branches long and prostrate or decumbent.. Stem pilose with subappressed or spreading hairs.. Leaves 3-foliolate; leaflets lanceolate, elliptic-lanceolate or elliptic, up to 15–70 mm. long, 5–20 mm. wide, with those of the leading shoot usually narrower, glabrous to sparsely pilose above, sparsely pilose beneath; petiole up to 15–55 mm. long.. Stipules filiform to linear-lanceolate, 2–11 mm. long.. Racemes lax, up to 2·5–14 cm. long, 2–6-flowered; bracts subulate to lanceolate or oblong-oblanceolate, 2–10 mm. long; bracteoles curved-ascending from the upper part of the pedicel, obliquely lanceolate, 2·5–9 mm. long.. Calyx accrescent, (9–)10–20 mm. long; upper lobes attenuately triangular-lanceolate to oblong-cordate, ± 3–4 times as long as the tube.. Standard obovate or suborbicular, longer than the calyx, white to greenish-white or bright yellow, sometimes marked reddish-purple, pubescent medially and apically outside; wings shorter to nearly as long as the keel; keel bent at right-angles in the lower half, with a long slightly incurved untwisted beak, (9–) 10–17 mm. long, conspicuously lanate along the upper margin proximal to the beak.. Pod shortly stipitate, clavate-ellipsoid, (15–) 18–35 mm. long, 8–16 mm. across, glabrous to thinly pilose (sometimes only on the upper side), up to 30–80-seeded.. Seeds oblique-cordiform, 2–2·5 mm. long, usually obscurely rugulose, with the raised areas concentric towards the margin, brown.
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Annual or short-lived perennial, with a leading shoot up to 0.5(-1) m tall, with long decumbent lower branches, hirsute with mostly spreading hairs, less often with shorter subappressed hairs. Leaves 3-foliolate; leaflets lanceolate, elliptic-lanceolate or elliptic, mostly 1.5-7 x 0.5-2 cm, with those of the leading shoot usually the more narrow, glabrous to sparsely pilose above, sparsely pilose beneath; petioles shorter to longer than leaflets. Stipules filiform to linear-lanceolate, 2-11 mm long. Racemes lax, up to 2.5-14 cm long, 2-6-flowered; bracts subulate to lanceolate or oblong-oblanceolate, 2-10 mm long; bracteoles curved-ascending from the upper part of the pedicel, obliquely lanceolate, 2.5-9 mm long. Calyx accrescent, (9-)10-20 mm long; upper lobes attenuately triangular-lanceolate to oblong-cordate, ±3-4 times as long as the tube. Standard obovate or subcircular, longer than the calyx, white to greenish white or bright yellow, sometimes marked reddish purple, pubescent medially and apically outside; wings shorter to nearly as long as the keel; keel bent at right-angles in the lower half, with a well-developed slightly incurved beak, (0.9-)1-1.7 cm long, conspicuously lanate along the upper margin proximal to the beak. Legume shortly stipitate, clavate-ellipsoid, (1.5-)1.8-3.5 cm long, glabrous to thinly pilose (sometimes only on the upper side). Seeds oblique-cordiform, 2-2.5 mm long, usually obscurely rugulose, with the raised areas concentric towards the margin, brown.
Standard obovate to subcircular, medially and apically pubescent outside; wings a little shorter than keel; keel (9)10–17 mm long, angled in lower half, with a long slightly incurved beak, lanate on upper margin proximal to the beak.
Leaves 3-foliolate; leaflets 1.5–7 × 0.5–2 cm, lanceolate to elliptic, sparsely pilose at least beneath; petioles shorter to longer than leaflets; stipules 2–11 mm long, filiform to linear-lanceolate.
Racemes long-pedunculate, laxly 2–6-flowered; bracts 2–10 mm long, subulate to lanceolate; bracteoles curved-ascending from upper part of the pedicel, 2.5–9 mm long, obliquely lanceolate.
Annual or short-lived perennial with erect leading shoot to 0.5(1) m tall and long decumbent lower branches, hirsute with mostly spreading hairs in the Flora Zambesiaca area.
Calyx accrescent, (9)10–20 mm long; upper lobes attenuately triangular-lanceolate to oblong-cordate, mostly 3–4 times as long as the tube.
Pod (1.5)1.8–3.5 cm long, clavate-ellipsoid, shortly stipitate, glabrous to thinly pilose (often only on upper side).
Seeds 2–2.5 mm long, oblique-cordiform, usually obscurely rugulose, brown.
A herb with prostrate branches, 1–2 ft. long
Flowers yellow
Thinly hairy
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.5
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

In dry rocky places.
Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses animal food environmental use poison
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 21 - 30
Germination temperacture (C°) 18 - 23
Germination luminosity -
Germination treatment soaking
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Distribution

Crotalaria barkae world distribution map, present in Angola, Burkina Faso, Botswana, Cameroon, Ethiopia, Ghana, Kenya, Mozambique, Malawi, Namibia, Niger, Nigeria, Sudan, Somalia, Chad, Togo, Tanzania, United Republic of, South Africa, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:487850-1
WFO ID wfo-0000207104
COL ID ZN9B
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR) Link

Synonyms

Crotalaria geminiflora Crotalaria taubertii Crotalaria homalocarpa Crotalaria barkae Crotalaria trachycarpa Crotalaria barkae subsp. barkae

Lower taxons

Crotalaria barkae subsp. teitensis Crotalaria barkae subsp. zimmermannii Crotalaria barkae subsp. cordisepala