Acacia.'] LEGUMINOSAE. 423 



Pod flattened, straight or curved : 



Leaves glabrous, under 1 in. long; peduncles filiform, 

 bracteate at or below the middle : 



Spines straight, some short thick, the rest white, often 

 hollow, up to 2 in. long, '2 in. diam. at base; pinnae 

 3 pairs ; leaflets elliptic or obovate, obtuse, about 5 pairs, 

 '15 in. by '075 in. ; flower-heads '2-'3 in. in diam. ; pods 

 very thin, flat, curved in a hook, -2 in. broad, 5-7-seeded 



4. eburnea. 



Spines of 2 kinds, short recurved and long slender, white, 



l'o-2 in. long; pinnae 4-6 pairs; leaflets linear-oblong, 



obtuse, '1--125 in. by '025 in. ; flower-heads '3 in. in diam. ; 



"pods linear, variously bent (W. & A.) "...5. Roxburghii. 



Leaves hairy; peduncles fairly stout, bracteate about the 



middle : spines all straight : 



Longer spines slender, white, up to 126 in. long ; branchlets 

 and leaves scurf y-villous ; leaves under 1 in. long with 

 6-10 pairs of pinnae ; leaflets minute, ovate-oblong, "075 in. 

 by '025 in. ; flower-heads '3 in. in diam. ; pods 2-3 in. 

 by "2 in. broad, papery, obtusely pointed, straight or 



curved 6. Campbellii. 



Longer spines stout, up to 25 in. long, *2 in. broad at 

 base ; branchlets and leaves grey- or tawny -tomentose ; 

 leaves up to 3'5 in. long with 6-12 pairs of pinnae; leaflets 

 oblong, -1--15 in. by '05 in. ; flower-heads '5 in. in diam. ; 

 pods 4-6 in. by '5 in., thick, curved, sharply pointed 



7. tomentosa. 



Pod not known ; spines very stout, dark brown, up to 2*5 in. 

 long, '3 in. in diam. at base ; peduncles rather stout, the bracts 

 below the middle ; flower-heads '5 in. in diam. ; leaves glabrous 

 with 2-3 pairs of pinnae; leaflets oblong, obtuse, '25-'4 in. long 



by 'l-*2 in. broad, prominently nerved 8. Wightii. 



Flower-heads in panicles, '2-'3 in. in diam. ; peduncles bracteate 

 at the middle ; spines usually short, straight, up to 1 in. long ; 

 leaves 1-2 in. long, with 5-15 pairs of pinnae; leaflets linear, 

 subacute, about '2 in. long ; pods flat, strap-shaped, 4-8 in. long, 



'3 in. broad 9. leucophloea. 



Flowers in elongate spikes ; peduncles usually 1 -bracteate, bracts 

 and bracteoles early caducous : 



Spines straight, short or long, longest up to 2 in. and '35 in. in 

 diam. at base, often hollow.; flower-spikes 1-1*5 in. long, bracteate 

 a little above the base; leaves glabrous, 1-1 '5 in. long with 2-5 



