ACACIA 



HH. Funicle folded at end of 

 seed, not encircling it. 

 i. Width of pod yin 37. impleia 

 ii. Width of pod *i-l in. 38. koa 

 EE. Fl.-heads solitary or in pairs 



or clusters. 



F. Width of phyll. %in. or less, 

 linear. 



a. Phyll. viscid 39. viscidula 



QG. Phyll. not viscid 40. elongata 



FF. Width of phyll. over l Ain., 



not linear. 

 o. The fl.-heads sessile, or 



nearly so 41. Oswald! 



OG. 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 (r& to less 

 than fan.), pungent pointed. 



D. Nerves 3 or 4: phyll. scattered 44. oxycedrus 



DD. N ernes 1. 



E. Phyll. whorled 45. verticillata 



EE. Phyll. clustered: fls. mostly 3- 



merous 46. Riceana 



CC. Shape of phyll. broader (except A. 

 aneura and A. longiflora 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, 

 a. 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 l /iin..52. longifolia 

 GO. Width of phyll. less than 



yin 52. longifolia 



AA. Lvs. all bipinnate. [var. floribunda 



B. F Is. in globular heads. 



c. Stipules none or brown and scarious. 

 D. Pinnae few, 2-10 pairs. 



E. Rachis hirsute 53. pubescens 



EE. Rachis not hirsute. 



F. Lfts. 1 %-l Yi in. long 54. elata 



FF. Lfts. less than 1 1 / in. long. 



o. Length of pinnse 1 in 55. Baileyana 



OG. Length of pinnse over 1 in. 



H. Funicle filiform 56. discolor 



HH. Funicle cup-shaped aril. 57 '. pruinosa 

 DD. Pinnae many, 8-25 pairs. 



E. Plant a tree: Ifts. 30-40 pairs, 

 more or less tomentosc-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.58. decurrens 

 FFF. Lfts. light green, distant: [dealbata 



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

 EE. Plant a shrub: Ifts. 20-50 



pairs, glabrous 59. filicina 



CC. Stipules spinescent. 



D. Pinnse 1 pair 60. pulchella 



DD. Pinnae more than 1 pair. 



E. Pod round 61. Farnesiana 



62. Cavenia 



EE. Pod moniliform 63. arabica 



EES. Pod not moniliform 64. eburnea 



BB. Fla. in spikes. 



a. Pinnse 10-40 pairs 65. Catechu 



cc. Pinnae 2-4 pairs. 



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



DD. Pod 1 Yi-4 in. long 67. Greggii 



ACACIA 



181 



1. juniperlna, \\illd. (A. echlnula, DC. A. pungens, 

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

 either pubescent or smooth : phyll. scattered, numerous 

 and tapering into a sharp point, 1 A to rarely Vim. 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^in. broad, usually contracted between 

 the seeds; seeds longitudinal, the funicle but little 

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

 distinguished from A. tenuifolia by its funicle filiform 

 the entire length, its petals with prominent midrib, and 

 its 5-merous fls. 



2. tenuifdlia, 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, %-l in. long, J^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, slightly con- 

 stricted between seeds, 

 2-3 in. long, nearly }^in. 

 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. diffusa, Li mil. (A. 

 genistxfulia, Link). A 

 shrub of 5 or 6 ft. with 

 loosely scattered foliage: 



linear or subulate, 

 in- long (mostly 



., tV-J'sin. wide, 69. Acacia tenuifolia. (XK) 

 1-nerved, ending in sharp 



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

 or 5-merous; peduncles l /i\n. long; sepals not half length 

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

 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.cuspiddla, Cunn.). 

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

 as thick. 



4. calamifdlia, 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, 1J^-2J4 in. long, Ain. 

 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 %in. long: pods a rich brown, 

 slightly contracted between the seeds, 1M~3 in. long, 

 Am. 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. 839. An attractive orna- 

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

 An excellent tan-bark species, analysis showing as 

 much as 20.63 per cent of tannin. 



phyll. 



-l 



