LEGUMINOS^: 87 



25. LATHYRUS, L. 



Resembling Vicia, but with broader petals, the leaves 

 usually with fewer leaflets, generally with tendrils. Not 

 alpine. 



A. Leaves reduced to a tendril, stipules leaf-like: 

 L. Apkaca, L. ; flower solitary, pale yellow; cornfields; 

 Switzerland (rare), Styria, Dauphiny, Pyrenees. 



B. Leaf-stalk broad, leaf-like, without leaflets ; no ten- 

 drils : L. Nissolia, L. ; flower solitary, crimson ; among 

 grass ; Switzerland (rare), Styria, Pyrenees. 



C. Leaves pinnate, with tendrils ; style twisted, chan- 

 nelled below : L. kirsutus y L. ; flowers violet-blue, stalk 

 of raceme much longer than the leaves, legume rough, 

 seeds pitted; cultivated land; Switzerland, Pyrenees, 

 L. Cicera, L. ; flowers small, pink, pod channelled on the 

 back, seeds smooth, stipules as long as the leaves ; culti- 

 vated land ; Southern Switzerland, Pyrenees, rare. 



D. Leaves pinnate, with tendrils; style twisted, tubu- 

 lar: L.sylvestris y L.; flowers large, greenish streaked with 

 pink, leaflets 2, linear-lanceolate, stem climbing, broadly 

 winged ; woods, frequent. L. heterophyllus, L. ; resem- 

 bling the last, but flowers pink, leaf-stalk broadly winged, 

 stipules larger ; mountain woods ; Switzerland, Tirol, 

 Dauphiny, Pyrenees. L. latifolus, L., Everlasting Pea ; 

 flowers large, bright red, stem climbing, stem and leaf- 

 stalk broadly winged ; Pyrenees. L. czrr/iosus, Ser. ; 

 flowers purple, leaflets in 2-3 pairs, leaf-stalk not winged, 

 stem climbing, winged, seeds tubercled ; Pyrenees, rare. 

 L. tuberosus, L. ; flowers purple, fragrant, leaflets 2, leaf- 

 stalk not winged, stem angular, not winged, seeds smooth, 

 root with tubers ; fields, frequent. 



