254 LEGTJMlNOSyE. (PULSE FAMILY. ) 



or inflated, teeth 5, equal or somewhat unequal. Standard various. 

 Keel obtuse, rarely acute, never acuminate-cuspidate ; claws of wings 

 and keel free or nearly so, more or less adnate to the staminal tube. 

 Style generally beardless, sometimes bearded, stigma naked, rarely 

 bearded. Pod sessile or stipitate, varying much in form, bivalved, gen- 

 erally inflexed at the dorsal suture so as to be completely or incom- 

 pletely 2-celled, often however quite 1-celIed, the ventral suture rarely 

 inflexed, in which case it may touch the inflexed dorsal suture — An- 

 nual or perennial herbs or shrubs, the leaves odd-pinnate, or, if abrupt- 

 ly pinnate, the petiole elongated, unarmed or spinescent. 



SERIES A. MONOCARPICA. ANNUALS OR RIENNIALS. 



* Hairs fixed hy their middle or aboDe their dase. 



I A. Arabicus, 2 epiglottis. 



* * Hairs simple, fixed at hase. 



t Stipules free. 



\ Flowers in heads. 



§ Valves of pod Jceelless. 



3 A. tribuloides, 4 pseudostella, 5 cruciatus, 6 radiatus, 7 triradia- 

 tus, 8 Schimperi. 



§ § Valves of pod Jceeled. 



9 A. oxyglottis. 



I I Flowers racemed, or racemed-cap)itate. 



§ Pods linear, more or less strongly curved, 



IT Stigma 'bearded. 



10 A. eremophilus. 



H IF Stigma not bearded. 

 II Pods glabrous. 



II A. corrugatus, 12 tenuirugis. 



I II Pods pubescent. 



13 A. Damascenus, 14 trimestris, 15 Gyzensis, 16 commixtus- 17 

 hispidulus, 18 callichrous, 19 annularis. 



§ § Pods oblong, thiclc, slightly curved. 



20 A. Bseticus, 21 aulacolobus, 22 condupiicatus. 



t t Stipules, or at least the loicer, connate. 



\ Pod linear-terete, falcate or hoolced. Leaflets glabrous above. 



23 A. hamosus, 24 brachyceras, 25 Dorcoceras, 26 canaliculatus. 



X \ Pod linear -lanceolate or oblong, straight or slightly curved. 



27 A. tuberculosus, 28 bombycinus, 29 Berytheus, 30 peregrinus, 

 31 leucophgeus. 



SERIES B. PERENNIAIiS. 



Sect. I. Hairs simple, fixed at base. 



* Fruiting calyx not inflated. 

 t Herbs loith unarmed 'petioles, subsessile usually capitate flowers, deciduous 



