ACACIA 



ACACIA 



181 



HH. Funicle folded at end of 

 seed, not encircling it. 

 I. Width of pod liin... .37. implexa 

 II. Width of pod %-l in. 38. koa 

 EE. Fl.-heads solitary or in pairs 

 or clusters. 

 F. Width of phyll. Y^in. or less, 

 linear. 



G. Phyll. viscid 39. viscidula 



GG. Phyll. not viscid 40. elongata 



FT. Width of phyll. over ]/iin., 

 not linear. 

 G. The fl.-heads sessile, or 



nearly so 41. Oswald! 



GG. The fl.-heads not sessile. 

 H. Funicle short, half as 



long as seed 42. harpophylla 



HH. Funicle long, scarlet, 

 encircling seed in dou- 

 ble fold 43. Cyclops 



BB. Fls. in spikes. 



C. Shape of phyll. narrow (ro to less 

 than \iin.), pungent pointed. 



D. A'erves S or J,: phyll. scattered 44. oxycedrus 



DD. Nerves 1. 



E. Phyll. whorled 45. verticillata 



EE. Phyll. clustered: fls. mostly S- 



merous 46. Riceana 



CC. Sh<ipe of phyll. broader {except A. 

 aneura and A . longiflnra var. flori- 

 bunda), less rigid, not pungent 

 pointed. 



D. Pod winged 47. aneura 



DD. Pod not winged. 



E. Calyx and phyll. pubescent (A. 

 Maidenii only slightly so). 

 F. Sepals velvet-like, bright 



orange-yellow 48. glaucescens 



FF. Sepals not velvet-like yet 

 more or less pubescent. 

 Q. Funicle encircling seed.. . .49. Maidenii 

 — - GG. Funicle folded and enlarged 



into cup-shaped aril . . . 50. holosericea 

 EE. Calyx and phyll. not pubescent. 



F. Phyll. linear 51. linearis 



FF. Phyll. elliptical, lanceolate. 



G. Width of phyll. over ]^in.. 52. longifolia 

 GG. Width of phyll. less than 



I4in- 52. longifolia 



AA. Lvs. all bipinnate. [var. floribunda 



B. Fls. in globular heads. 



C. Stipules none or brown and scarious. 

 D. Pinnee few, 2-10 pairs. 



E. Rachis hirsute 53. pubescens 



EE. Rachis not hirsute. 



F. Lfts. 1 14-1 14 in. long 54. elata 



FF. Lfts. less than 1 ]4 iri. long. 



G. Length of pinnse 1 in 55. Baileyana 



GG. Length of pinnse over 1 in. 



H. Funicle filifor-m 56. discolor 



HH. Fttnicle cup-shapedaril.57 . pruinosa 

 DD. Pinns: many, 8-26 pairs. 



E. Plant a tree: lfts. 30~40 pairs, 

 more or less tonientose-pu- 



bescent 58. decurrens 



F. Lfts. dark green, shining 

 above, imbricate: fls. bloom 



in June, pale yellow 58. decurrens 



FF. Lfts. more or less gray, [mollis 



farther apart: fls. bloom in 

 Jan. and Feb., deep yellow.^?,, decurrens 

 FFF. Lfts. light green, distant: [dealbata 



sepals as long as petals . . . .58. normalis 

 EE. Plant a shrub: lfts. 20-60 



pairs, glabrous 59. filicina 



CC. Stipules spinescent. 



D. Pinnse 1 pair 60. pulchella 



DD. Pinnse more than 1 pair. 



E. Pod round 61. Farnesiana 



62. Cavenia 



EE. Pod moniliform 6.'^. arabica 



EEE. Pod not moniliform 64. eburnea 



BB. Fls. in spikes. 



c. Pinnse 10-J,0 pairs 65. Catechu 



CC. Pinnse 3-4 pairs. 



D. Pod not exceeding 1 in. long 66. Drummondii 



DD. Pod 1 y2~4 in. long 67. Greggii 



1. juniperina, Willd. (-4. echlnula, DC. .4. pungens, 

 Spreng.). A stiff shrub, 8 to 12 ft., with branchlets 

 either pubescent or smooth: phyll. scattered, numerous 

 and tapering into a sharp point, Jg to rarely 3-2in. long, 

 1-nerved: fl.-heads solitary on peduncles longer than 

 the phyll., 5-merous; petals ciliate; petals acute, with 

 prominent midrib: pod more or less falcate, flat, 1-2 

 in. long, about J-ijin. broad, usually contracted between 

 the seeds; seeds longitudinal, the funicle but little 

 folded and filiform to the end. May, June. — May be 

 distinguished from ,4. tenuifolia by its funicle filiform 

 the entire length, its petals with prominent midrib, and 

 its 5-merous fls. 



2. tenuifolia, F. v. M. Fig. 69. An everblooming 

 shrub with a sticky exudation on sts. and over the young 

 fl.-buds: branchlets slender and drooping: phyll. linear- 

 subulate, M-1 in. long, ^^in. wide, 1-nerved, ending in 

 a pungent point; gland at base: fls. lemon-yellow, with 

 peduncles J^in. long, solitary in axils of the phyll., 30 

 or more in a head: pods 



straight, shghtly con- 

 stricted between seeds, 

 2-3 in. long, nearly 34™. 

 wide, pointed at both ends 

 and bearing two rough 

 longitudinal marks over 

 each seed, characteristic 

 of this species; funicle 

 silvery white, half as long 

 as seed and enlarged into 

 a cup-shaped aril over one 

 end; ripe June-Nov. Fls. 

 every month. F. v. M. 

 Icon. 1:8. — This attrac- 

 tive shrub is easily grown 

 from seed, germinating in 

 about three weeks and 

 growing steadily. It is 

 delightful for situations 

 that demand a low-branch- 

 ing habit. Its everbloom- 

 ing fls., honey-like odor 

 and dust-resistant quali- 

 ties also recommend it. 



3. difffisa, Lindl. (.4. 

 genislxfolia, Link). A 

 shrub of 5 or 6 ft. with 

 loosely scattered foliage: 

 phyll. linear or subulate, 

 ]4r^)4, in- long (mostly 

 H\n.), T2-J^in. wide, 

 1-nerved, ending in sharp 

 point: fls. in pairs or reduced to a single head, either 4- 

 or 5-merous; peduncles J^in. long; sepals not half length 

 of petals: pod stipitate, flat, acute, 3-4 in. long, J-gin. 

 broad, valves convex over seeds; funicle much folded 

 and thickened from the middle. Apr., May. B.M.2417. 

 B.R. 634. Var. cuspidata, Benth. (A. cuspidala, Cunn.). 

 Phyll. more slender, from %-2 in. long, about as broad 

 as thick. 



4. calamifolia, Sweet. Broom Wattle. Fig. 70. A 

 tall shrub or small tree with slender erect branches: 

 phyll. narrow-linear to subulate, with oblique point at 

 apex and narrowed to base, \]i-2}i in. long, rein, 

 wide, 1-nerved; gland near base (obscure in dried .speci- 

 mens) : racemes short, of 3 or 4 heads, or reduced to a 

 single one; fls. 20 to a head, 5-merous; sepals half as 

 long as petals; peduncles J^in. long: pods a rich brown, 

 slightly contracted between the seeds, l)i-3 in. long, 

 i^in. wide; funicle red, almost encircling the seed in a 

 double fold, ending in a silvery club-shaped aril; ripe 

 Aug. Fls. Feb.-Apr. B.R. 8.39. — An attractive orna- 

 mental at all times but especially so when in full bloom. 

 An excellent tan-bark species, analysis showing aa 

 much as 20.63 per cent of tannin. 



69. Acacia tenuifolia. ( X }^2) 



