ACACIA 



ACACIA 



cc. Phyll. broader, less rigid, not pungent-pointed, 

 l%-6 in. long. 



36. longifdlia, Willd. SYDNEY GOLDEN WATTLE. Fig. 

 9. Tall, handsome shrub: phyll. 4-6 in. long, oblong- 

 lanceolate, acuminate; longitudinal veins several, promi- 

 nent: spikes 1 in. long, loose, axillary, mostly in diver- 

 gent pairs; fls. golden yellow. Mar. B.R. 362. B.M. 

 2166. B.H. 1896, p. 504. -Useful as a street tree in Calif. 



9. Phyllodia and racemes of Acacia 

 longifolia. 



Var. Sophdree, F.v. M. (A. Sophdree, R. fir.). Phyll. 

 2-3 in. long, 5-8 lines wide, broadly 'oblong, obtuse. 



37. linefcris, Sims. (A. longlssima, Wendl.). Shrub: 

 phyll. 4-6 in. long, linear, with 1 prominent longitudinal 

 nerve : spikes 1-2 in. long, loose and interrupted, slender: 

 fls. pale yellow or dirty white. B.M. 2156. B.E. 680. 

 Valued as a street tree in Calif. 



38. aneura, F. v. M. MULGA. Shrubby; often hoary, 

 with minute pubescence : phyll. l%-3 in. long, 1-1% 

 lines wide, narrowly linear, without prominent nerves but 

 minutely striate, rigid : spikes short and dense on short 

 peduncles: pods broad, flat, short. F. v. M. Icon. 10: 8. 



39. glauc6scens, Willd. (A.cinerdscens, Sieb.). Glau- 

 cous tree 50 ft. or more high: phyll. 4-6 in. long, 5-12 

 lines broad at the middle, linear-lanceolate, narrowed at 

 both enas, falcate, striate, and with 3-5 more prominent 

 nerves, all free from the lower margin: spikes in pairs, 

 1-2 in. long : pods narrow-linear, biconvex, irregularly 

 twisted. Mar. B.M. 3174. 



40. holosericea, Cunn. (A. leucophylla, Lindl.). Shrub 

 or small tree 10-20 ft., white, silky : phyll. 4-6 in. long, 

 1-3 in. broad, oblong-lanceolate, with 3 or 4 prominent 

 nerves confluent with the lower margin at the base: 

 spikes mostly in pairs, sessile, about 2 in. long. Mar. 



AA. Lvs. all bipinnate. 



B. Fls. in globular heads. 



0. Heads in terminal-axillary panicles or racemes: 



stipules small or 0. 

 D. Trees: pinnae in 8-15 pairs, fl. -heads panicled. 



41. deciirrens, Willd. GREEN WATTLE. Branchlets with 

 very prominent angles decurrent from the petioles ; 



glabrous, or the young shoots slightly tomentose-pubes- 

 cent : leaflets 1-2 lines long, narrow, rather distant : 

 fls. whitish yellow: pods mostly less than 4 lines wide, 

 flat, more or less contracted between the seeds. Mar.- 

 May. 

 Var. normalis, Benth. Leaflets 3-4 lines long. 



42. mollissima, Willd. (A. decurrens var. mdllis, 

 Lindl. ) . BLACK WATTLE. Branchlets with decurrent an- 

 gles only slightly prominent: foliage and branchlets pu- 

 bescent, the young shoots of a yellowish or golden tinge; 

 leaflets 2-3 lines long, narrow, crowded: fls. fragrant: 

 pods mostly less than 4 lines wide, flat, more or less con- 

 tracted between the seeds. Dec.-Mar. B.R. 371. The 

 names of this and of the next species are often inter- 

 changed in gardens and even in herbaria. 



43. dealbata, Link. SILVER WATTLE. Branchlets with 

 decurrent angles only slightly prominent : foliage and 

 branchlets very glaucous or hoary, with a fine pubes- 

 cence, the young shoots whitish; leaflets 2-3 lines long, 

 narrow, crowded : pods mostly more than 4 lines wide, 

 flat, hardly constricted between the seeds. Mar. A.F. 

 13: 880. R.H. 1896, p. 502. 



DD. Shrubs or small trees: pinna? mostly in 2-8 pairs: 

 fl. heads racemed. 



44. pubgscens, R. Br. HAIRY WATTLE. Shrub 6-10 ft.: 

 branches and petioles hirsute: pinnae mostly 3-8 pairs; 

 leaflets 6-20 pairs, 1-2 lines long, crowded, linear, gla- 

 brous: racemes slender, longer than the Ivs. Mar. B.M. 

 3263. F.R. 1:733. 



45. Baileyana, F.v.M. Small, handsome tree: branches 

 and foliage glabrous and glaucous: pinnae 2-3 pairs; 

 leaflets about 13 pairs, l%-2% lines long, crowded, 

 linear: racemes 3-4 in. long. Jan. F. v. M. Icon. 12: 5. 

 G.C. III. 15:37. 



cc. Heads on simple, solitary, or clustered peduncles: 

 stipules often spinescent. 



46. pulch611a, R. Br. Elegant shrub: branches slender, 

 glabrous or hirsute, usually armed with subulate axillary 

 spines : pinnae 1 pair ; leaflets 4-7 pairs, 1-2 lines long, 

 obtuse: fl. heads solitary; fls. yellow. Apr. 



Var. grandis, Hort. (A . grdndis, Henfr. ) . Shrub 6 ft., 

 glabrous: leaflets 8-10 pairs, longer: fls. yellow. Feb. 

 May. J.H. 111.35:369 (1897). 



Var. hispidissima, Hort. (A. hispidissima, DC.). 

 Branches very hirsute, with long, spreading hairs : 

 leaflets narrow: fls. white. B.M. 4588. 



47. J&rnesikn&,Wmd..(A.leptophylla,'DC.). POPINAC. 

 OPOPANAX. CASSIE. HUISACHE. Much branching shrub, 

 6-10 ft. : stipules straight, slender, sometimes minute 

 spines; pinnae 5-8 pairs; leaflets mostly 10-25 pairs, 1-2 

 lines long, narrow, linear, glabrous : peduncles 2 or 3 in 

 the older axils : fl. heads large, globular, deep yellow, 

 very fragrant: pods almost terete, indehiscent, at length 

 turgid and pulpy. Feb.-Mar. Tex., Mex., Asia, Afr. 

 and Austral. Grown in S. France for perfumery. 



48. Cavenia, Bertero. ESPINO. CAVAN. Height 20 ft. : 

 spines stout : leaflets scabrous, scabious-pubescent. Oth- 

 erwise near to A. Farnesiana, of which it is sometimes 

 considered a mere variety. Chile. A good hedge plant. 



49. Arabica, Willd. GUM ARABIC TREE. Fig. 10. Small 

 tree, with spiny stipules: pinnae 3-6 pairs, each with 40 

 or less very narrow leaflets : fls. white, in globular, pe- 

 dunculate heads, which are usually in 3's. Arab, and Eu. 



50. filicina, Willd. Unarmed shrub : pinnae 2-15 pairs ; 

 leaflets 20-50 or more pairs (rarely 10-15), very small: 

 fl. heads globular: pods linear, straight, flat, not pulpy. 

 Tex. and Mex. 



BB. Fls. in cylindrical spikes. 



51. Gr6ggii, Gray. Small tree 10-20 ft., pubescent, 

 often with scattered, short, stout, hooked prickles : 

 pinnae 2-4 pairs, %-\ in. long ; leaflets 3-5 pairs, 2 or 3 

 lines long, oblong or oblong-obovate, thick, and with 2 or 

 3 straight nerves : peduncles %-l in. long. Apr. 

 Tex., S. Calif, and Mex. 



52. Catechu, Willd. Tree: pinnae 8-10 pairs, each bear- 

 ing 100 or less linear, pubescent leaflets : fls. yellow ; 

 spikes solitary or in 2'sor 3's. E. Ind. Yields Catechu, 

 a valuable tannin. 



