Crotalaria shirensis (Baker F.) Milne-redh.

Species

Angiosperms > Fabales > Fabaceae > Crotalaria

Characteristics

Small erect annual, exceptionally up to 4 dm. tall, sometimes much branched.. Stem very slender, with small scattered appressed or spreading hairs.. Leaves subsessile, simple; blades mostly narrowly oblong to narrowly elliptic (sometimes linear outside the Flora area), up to 35–60 mm. long and 2–5 mm. wide, but the basal ones often broader, elliptic to ovate, glabrous above, sparsely puberulous beneath; petiole up to 1 mm. long.. Stipules filiform, up to 1–3 mm. long.. Racemes slenderly pedunculate, lax, up to 3–6(–9) cm. long, mostly 1–3-flowered; bracts filiform, up to 1 mm. long; bracteoles inserted at the top of the pedicel, similar to the bract.. Calyx 2·5–4 mm. long, thinly puberulous; lobes acuminately triangular, a little longer than the tube.. Standard elliptic, pale yellow, with a darker red-fringed mark at the base inside, reddish veined and glabrous outside; wings shorter than the keel; keel bent at right-angles in the lower third, with a long narrow distinctly recurved untwisted beak, 5–6 mm. long.. Pod sessile, narrowly cylindrical, up to 10–13 mm. long, 2–3 mm. across, shortly and rather sparsely pubescent, ± 15–20-seeded.. Seeds cordiform, ± 1 mm. long, smooth, reddish-brown.. Fig. 130/1–11.
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Standard elliptic, pale yellow, with a darker red-fringed mark at the base inside, reddish veined and glabrous outside; wings brighter yellow, shorter than the keel; keel 4–6 mm long, bent at right angles in the lower third, with long narrow forwardly projecting beak.
Leaves subsessile, simple; blades c. 2–6(8) × 0.2–0.5 cm, mostly linear-oblong to narrowly elliptic, but the basal ones often broader, elliptic to ovate, sparsely puberulous beneath; stipules up to 1–3 mm long, setaceous.
Racemes slenderly pedunculate, lax, mostly 1–3-flowered; bracts up to 1 mm long, setaceous; bracteoles at the top of the pedicel, similar.
Small erect annual, 5–25(40) cm tall, sometimes much branched; stem very slender, with small scattered appressed or spreading hairs.
Calyx 2.5–4 mm long, puberulous; lobes acuminately triangular, a little longer than the tube.
Pod 8–13 × 2–3 mm, sessile, narrowly cylindrical, rather sparsely pubescent, c. 15–20-seeded.
Seeds c. 1 mm long, cordiform, smooth to slightly rugulose, reddish-brown.
Life form annual
Growth form herb
Growth support -
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.4
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color -
Blooming months -
Fruit color -
Fruiting months -
Nitrogen fixer rhizobia
Photosynthetic pathway c3

Environment

Light -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 9-12

Usage

Uses -
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 shirensis world distribution map, present in Angola, Burundi, Cameroon, Kenya, Mozambique, Malawi, Tanzania, United Republic of, Zambia, and Zimbabwe

Identifiers

LSID urn:lsid:ipni.org:names:488866-1
WFO ID wfo-0000210571
COL ID ZP4R
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Crotalaria shirensis Crotalaria bongensis var. shirensis