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304 XL. LEGUMiNOS^, [Jcucia. 



Phyllodia oblong-laaceolate, under i in, long. Branches , 



spinescent, woolly 28. A. enoclada. 



Phyllodia linear or lanceolate, broader than thick. 



Pod 2^ to 3 lines broad, not contracted between the seeds 



when perfect (E. and S. species) 29. ^. sicuhfortins. 



Pod 1^ lines broad, regularly contracted between every seed 



(X.W. species) ^0. J.jaale^i^' 



Phyllodia linear-subulate, acicular or 4-gonous. 



Phyllodia mostly recurved. Branches tomeutofte. Pedun- 

 cles slender. Heads small. Pod-valves very convex, striate 31- AJaricma, 

 -Phyllodia straight, clustered at the old nodes. Peduncles rfu 



slender. Funicle encircling the seed Zi. AJelragonopnsi^ 



Phyllodia straight, often numerous, but not clustered. Pe- ^ . . 



duncles very short ,...:.. U. A. sphacelata. 



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Phyllodia rigid, but scarcely pun{];ent, several-nerved. Flower- 

 heads almost sessile (Eastern species) 184, A, Oswaldi, 



Sepals united (Eastern or tropical species). 

 Seeds longitudinal (estratropical species). 



PeJuncIes short. Pod 4 to 5 lines broad. Branches usually 



woolly 14. ^. lanigera. 



Pedunrles slender. Pod 1 to 2 lines broad . . , . . 16. ^. trinervata. 

 Seeds obliquely transverse. Branches glabrous, somewhat 



viscid (tropical species) 15. A, phlehocarpa, 



Phyllodia nearly terete, striate with several nerves or nerveless. 

 Petals smooth. 

 Stipules lanceolate, small and very deciduous. 



Phyllodia divaricate, straight or slightly incurved. Peduncles 



very short. Petals narrow^ with raised midribs . . . . 17. A * collet lOides, 



Phyllodia straight, short, with not more than 2 nerves. Pe- 

 duncles very short. Petals smooth M. A , sphacelaia* 



Phyllodia divaricate, straight or recurved. Peduncles as long 



as or longer than the heads. Petals with raised midribs . 18. A, striatula, 



Phyllodia crowded, incurved, mo'stly under 1 in. Petals with- 

 out raised midribs . . * 21. A. sulcata. 



Stipules setaceous or spinescent. 



Stipules slender. Phyllodia divaricate, recurved or flexuose. 

 Pod fhit, with raised margins ,..,,.,... 19. J. campjhpliyUa^ 



Stipules rigidly spinescent. Phyllodia erect, almost obtuse, 

 with short pungent points. Petals concave and thickened 

 at the top ' . . . . . . . . 20. 4. ieredfoha, 



Phyllodia linear or lanceolate, recurved, with 2 thick marginal or 

 nearly marginal nerves. Stipules setaceous or spinescent. 

 Petals striate, 



Phyllodia mostly i in. long, rather broad 32. ^. costata. ^ 



Phyllodia \ to 1 in. long, narrow i . . 23. J. barbinems, 



Phyllodia 1 to 2 in. long, very narrow, with hooked pints . 24. A, atajriphjlh. 

 Petals smooth. Phyllodia ^ to 1 in., rather broad . . . , 25. ^. Baxien. 

 Phyllodia subulate, terete, fmely striate. Heads sessile, ovoid. 



Flowers 5-merous . t . , 228. A^aclphjlh. 



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0. JJninerireB,— P/igHodia l-nerved: J^Jeads globular,. 



Petals prominently striate. Pod thick, with broad smooth margins. 

 Flowers 5-merous. 



Phyllodia crowded, under i in. long, obliquely oblong-lanceolate, 



often falcate . 2^. A. anmnfens, 



PhyUodia scattered, f to U in. longjinear-tetragonous ... 27. A. quadmtdcata. 

 Petals membranous, smooth or with a jiromiueut midrib. 

 Flowers mostly h-merous. 



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