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Published In: Species Plantarum 2: 729. 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: A genus with about 130 species, widely distributed in the northern hemisphere, S. America and Africa.

 

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Annual or perennial herb, climbing or straggling, stem frequently winged. Leaf mostly paripinnately compound, rachis ending in a tendril, rarely in a bristle or leaflet, leaflets 2-many or rarely absent, entire; stipules usually large, semisagittate or entire. Inflorescence an axillary raceme or solitary. Calyx regular to irregular. Vexillum mostly broad with a short claw. Wing free or coherent to the keel. Stamens diadelphous 9+1 or monadelphous, vexillary stamen free or connate with the tube, anthers uniform. Ovary subsessile or stipitate, style dorsally compressed, linear to spathulate, pubescent on the upper side, rarely glabrous, stigma terminal or capitate. Fruit compressed, 2-many seeded.
 

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1 Leaflets present (2)
+ Leaflets absent (stipules foliaceous) Lathyrus aphaca
2 (1) Rachis terminated by a mere bristle (3)
+ Rachis terminated by a tendril (4)
3 (2) Leaflets 4-10, inflorescence 4-8)-12) flowered
+ Leaflets 2, inflorescence 1-flowered Lathyrus erectus
4 (2) Leaflets 2 (5)
+ Leaflets 6-10 Lathyrus humilis
5 (4) Inflorescence 1-3-flowered (6)
+ Inflorescence 5-12 (rarely less)-flowered Lathyrus pratensis
6 (5) Fruit without a ridge or wing (7)
+ Fruit winged on one side Lathyrus sativus
7 (6) Fruit pilose (8)
+ Fruit glabrous (9)
8 (7) Flower c. 10-14 mm long Lathyrus hirsutus
+ Flower c. 2-3.5 cm long Lathyrus odoratus
9 (7) Mature fruit 5-10.5 mm broad. C. 2.5-4.0 cm long; flower 10-16 mm long Lathyrus cicera
+ Mature fruit 4-5 mm broad, c. 3-6.0 cm long; flower 8-12 mm long Lathyrus sphaericus
 
 
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