PAPILIONACEAE (PEA FAMILY) 



15 PAPILIONACEAE. Pea Family. 



1 a Trees, shrubs or woody vines a 



b Herbs, not woody 1 1 



2 a Usually climbing woody vines; flowers blue to white, 



showy, in long racemes 5. Wistaria, p 173 



b Erect shrubs or trees 3 



3 a Shrubs cultivated in pots 4 



b Shrubs or trees not cultivated in pots 5 



4 a Leaflets n or more; flowers white or rose-colored 



3. Swainsona. p 173 



b Leaflets 3; flowers yellow 4. Cytisus. p 173 



5 a Leaflets 3 6. Laburnum, p 173 



b Leaflets 5-25 6 



6 a Leaflets 8-12, even in number 7. Caragana. P 173 



b Leaflets 5-25, odd in number 7 



7 a Trees or shrubs usually with spines for stipules, the 



branches often zigzag 8. Robinia. p 173 



b Trees or shrubs not with spines for stipules 8 



8 a Trees with flowers in panicles 9 



b Shrubs or trees with flowers in spikes or racemes 10 



9 a Flowers about % in. long, yellowish-white; pods oblong, 



not flattened i. Sophora. p 173 



b Flowers i in. or more long; pods linear, flattened 



2. Cladrastis. p 173 



10 a Flowers violet to purple, in dense spikes 



9. Amorpha. p 173 

 b Flowers yellow, in racemes 10. Colutea. p 173 



11 a Herb with simple leaves u. Crotalaria. p 173 



b Herbs or vines with compound leaves 12 



12 a Herbs with palmately-compound leaves; leaflets 7-11 



12. Lupinus. p 174. 



b Leaves pinnately-compound or with 3 leaflets 13 



13 a Leaves with 2 or 4-25 leaflets 14 



b Leaves with 3 leaflets 21 



14 a Leaves with an even number of leaflets 15 



b Leaves with an odd number of leaflets 18 



15 a Garden vines cultivated for food 16 



b Wild or garden vines not cultivated for food 17 



16 a Plant with tendrils 13. Pisum. p 174 



b Plant not with tendrils 14. Arachis. p 174. 



17 a Stipules usually less than Vz in. long or sharply toothed 



all around 15. Vicia. p 174. 



b Some of the stipules V-2 in. or more long, sharply toothed 



only at the base 16. Lathyrus. p 174. 



18 a Vines with 3-7 leaflets; flowers brownish-purple to violet 19 

 b Erect herbs with 9-25 leaflets 20 



171 



