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Published In: Species Plantarum 2: 714. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: About 550 species, distributed throughout the tropics and subtropics, but most numerous in Tropical Africa; represented by 11 species in Pakistan.


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Herbs or shrubs. Leaf simple or palmately trifoliolate or rarely up to 7-foliolate, generally stipulate. Inflorescence a raceme, terminal or leaf opposed. Bracts and bracteoles small or absent. Calyx teeth linear, lanceolate, subequal, free or the upper 2 fused, forming a lip. Vexillum orbicular, rarely ovate. Wing shorter than the standard. Keel incurved, beaked. Stamens monadelphous, anthers dimorphic. Ovary generally sessile, 2-many ovuled, style incurved, bearded above, stigma small, rarely bilobed. Fruit sessile or stipitate, globose or linear-oblong, turgid or inflated, 2-many seeded, continuous within.

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1 Fruit glabrous (6)
+ Fruit pubescent (at least when young) (2)
2 (1) Fruit 2-seeded, c. 4 mm or less long (3)
+ Fruit more than 2-seeded (4)
3 (2) Stem more than 30 cm tall; petiole more than 1 cm long Crotalaria medicaginea var. luxurians
+ Stem less than 30 cm tall; petiole less than 1 cm long Crotalaria medicaginea Lam. var. medicaginea
4 (2) Fruit 6 or less seeded (5)
+ Fruit 10-15-seeded Crotalaria juncea
5 (4) Fruit 4-6 mm wide, leaf trifoliolate when present Crotalaria persica
+ Fruit 4 mm or less wide, leaf simple Crotalaria burhia
6 (1) Corolla more than half the length of the calyx (calyx less than 2 cm long) (7)
+ Corolla about half the size of calyx (calyx c. 1.8-2.5 cm long) Crotalaria calycina
7 (6) Flower 1 cm or less long (9)
+ Flower more than 1 cm long (8)
8 (7) Bract linear, subulate, 6 mm or less long Crotalaria retusa
+ Bract ovate, c. 10 mm or more long Crotalaria spectabilis
9 (7) Flower sessile (10)
+ Flower pedicellate (11)
10 (9) Leaf 3.5 cm or less long, fruit c. 1.0 cm long (calyx less hairy) Crotalaria sessiliflora subsp. hazarensis
+ Leaf more than 4.5 cm long, fruit c. 1.5 cm long (calyx more hairy)
11 (9) Inflorescence more than 5-flowered (12)
+ Inflorescence less than 5-flowered Crotalaria albida
12 (11) Fruit more than 1.7 cm long (c. 1.8-3.2 cm long) Crotalaria mysorensis
+ Fruit less than 1.7 cm long (c. 1.2-1.6 cm long) Crotalaria prostrata
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