Crotalaria ononoides Benth.

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Photo: Nicholas Wightman
Kipemba area, Kalumbila Distr., North-Western Province

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Synonyms:
Common names:
Description:	Much branched spreading annual, procumbent or ascending, sometimes up to 0.5–1 m tall; branches pilose with subappressed or spreading hairs. Leaves shortly petiolate, 3-foliolate; leaflets mostly 2.5–5(6) × 0.8–1.8(2.4) cm, lanceolate to elliptic or obovate, the upper ones often longer and proportionally narrower, glabrous to sparsely pilose above, subappressed pilose beneath; stipules simple or 2–3(5)-fid, up to 5–13 mm long, with both the simple stipules and segments linear-subulate. Flowers numerous in sessile heads; bracts basally fused to the pedicel, spreading from just below the calyx, 3-fid with linear segments up to 10–13 mm long; bracteoles basally fused to the calyx tube, the free part directed forwards, 8–12 mm long, linear. Calyx 7–10(12) mm long, deeply divided, slightly 2-lipped, pilose; lobes subulate, caudate, 4–5 times as long as the tube. Standard elliptic-obovate to subcircular, yellow, finely veined or reddish flushed with age, glabrous except along the midvein outside; wings ± as long as the keel; keel 7–9 mm long, subangular, narrowly beaked. Pod sessile, 8–12 mm long, ellipsoid, glabrous except for a few hairs at the apex, 8–14-seeded. Seeds 1.5–2 mm long, oblique-cordiform, smooth, pale orange-brown.
Notes:
Derivation of specific name:	ononoides : Ononis-like, referring to the genus Ononis
Flowering time:	Feb - May
Worldwide distribution:	Widespread from West to East and south Central Africa
Growth form(s):	Annual.
Insects associated with this species:
Spot characters:	Display spot characters for this species
Literature:	Martins, E.S. et al. (2003). Papilionoideae Flora Zambesiaca 3(7) Pages 130 - 131. (Includes a picture).

Other sources of information about Crotalaria ononoides:

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Flora of Zambia: Crotalaria ononoides

External websites:

African Plants: A Photo Guide (Senckenberg): Crotalaria ononoides
BHL (Biodiversity Heritage Library): Crotalaria ononoides
EOL (Encyclopedia of Life): Crotalaria ononoides
GBIF (Global Biodiversity Information Facility): Crotalaria ononoides
Google: Web - Images - Scholar
iNaturalist: Crotalaria ononoides
IPNI (International Plant Names Index): Crotalaria ononoides
JSTOR Plant Science: Crotalaria ononoides
Mansfeld World Database of Agricultural and Horticultural Crops: Crotalaria ononoides
Plants of the World Online: Crotalaria ononoides
Tropicos: Crotalaria ononoides
Wikipedia: Crotalaria ononoides