8 ACACIA 



cc. Pliyll. broader, less rigid, not piingenf-poinled, 

 1)4-6 in. long. 



36. longUAIia, 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. R.H. 1896. p. 504. -Useful as a street tree in Calif. 



Var. Sophdrse, F. v. M. [A. Sophdrcc, R. Br.). Phyll. 

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



37. lineiris, Sims. {A. tonfflssi'ma, 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. 21,i6. B.R. 680.- 

 Valued as a street tree in Calif. 



lines wide, narrowly linear, without prominent nerves but 

 minutely striate, rigid: spikes short and dense on short 

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



39. glaucfiscens, Willd. (.4. ojBfro'sccns, 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 ends, 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. holoserfcea, Cunn. (A. leucophylla, Undl.). 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. Jyvs. all bipinnate. 



B. Fls. in globular lieads. 



c. JTeads in terminal-axillary panicles or racemes: 



stipules small or 0. 

 D. Trees: pinnw in S-15 pairs, fl. -heads panicled. 



41. decurrens, Willd. Green Wattle. Branchlets with 

 very prominent angles decurrent from the petioles ; 



ACACIA 



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. normalia, Benth. Leaflets 3^ 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. dealbita, Link. Silver Wattle. Branchlets with 

 decurrent angles only slightly prominent : foliage and 

 branchlets very glaucous or hoarj', with a fine pubes- 

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

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

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

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



DD. Shrubs or small trees: pinnm mostly in 2S pairs: 

 fi. heads racemed. 



44. pub^scens, K. Br. Hairy Wattle. Shrub 6-10 ft.: 

 branches and petioles hirsute: pinnie 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. 

 1263. F.R. 1:733. 



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

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

 leaflets about 13 pairs, lK-2}^ lines long, crowded, 

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

 G.C. III. 15:37. 



Beads 



cles: 



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

 glabrous or hirsute, usually armed with subulate axillary 

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

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



Var. grindlB, Hort. {A.grdndis.Hentr.). Shrub 6ft., 

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

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



Var. hispidlBsima, Hort. {A. hispid Issima, DC). 

 Branches very hirsute, with long, spreading hairs : 

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



47. VaTneaiina,Wnid.{A.leptophftUa,DC.). Popinac. 

 Opopanax. Cassie. Huisache. Much branching shrub, 

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

 spines; pinnee 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. Cavinia, Bertero. Espino. Cavax. 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: pinnse 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. filiclna, 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. Grfiggii, Gray. Small tree 10-20 ft., pubescent, 

 often with scattered, short, stout, hooked prickles : 

 pinnae 2-i 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 yi-1 in. long. Apr. 

 Tex., S. Calif, and Mex. 



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

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

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

 a valuable tannin. 



