LEGUMINOS/E. CCXXXI. PROSOI-IS. CCXXXII. LAGONYCHIUM. CCXXXIII. ACACIA. 



401 



the note in Coll. liort. rip. p. 2. no. 3. is referrible to this 

 species. 



St. Domingo Algaroba. Clt. 1818. Tree. 



14 P. jt'LiFLdiiA (D. C. prod. 2. p. 447.) spines stipular, 

 straight, small ; leaves with 1-2 pairs of pinnae, each pinna bearing 

 from 1 8-20 pairs of linear leaflets, which are acutish at both ends, 

 and are glabrous as well as petioles, with a sessile gland seated 

 on the petiole between the pairs of pinnae ; spikes cylindrical, 

 sessile; legume much compressed. T? . S. Native of the south 

 of Jamaica, in dry places. Mimosa juliflora, Swartz, prod, 

 p. 85. Mimosa piliflora, Swartz, fl. ind. occ. 2. p. 986, 

 Spikes of flowers almost like the aments of Salix fragilis. 

 Flowers yellowish. Legume filled with a fleshy substance be- 

 tween the seeds, which is eatable. Leaflets G-8 lines long. 

 Acacia falcata, Desf. cat. hort. par. ed. 2. p. 207. is probably 

 not distinct from this tree. 



July-flower Algaroba. Clt. 1 800. Tree 30 feet. 

 \ Species not sufficiently known. 



15 P. TORQUA'TA (D. C. prod. 2. p. 448.) spines twin, stipular; 

 leaves with 1-2 pairs of pinnae, each pinna bearing many pairs 

 of linear leaflets, with a gland between the pairs of pinnae on the 

 petiole ; spikes of flowers cylindrical, on short peduncles ; legume 

 torquate and constricted between the seeds, and filled with mealy 

 pulp inside. Tj . S. Native of South America. Acacia tor- 

 quata, Lag. nov. gen. et spec. 16. no. 206. Stamens 10, free. 



CW/arerf-podded Algaroba. Tree. 



16 P. AFFI'NIS (Spreng. syst. 2. p. 326.) spines straight ; 

 leaves with only one pair of pinnae, each pinna bearing many 

 pairs of remotish, quite glabrous leaflets ; petioles without glands ; 

 branches tubercled ; spikes filiform, twin. fj . S. Native of 

 Monte Video. 



Allied Algaroba. Tree. 



Cult. See I'nga for culture and propagation, p. 396. 



CCXXXII. LAGONY'CHIUM (from Xaywc, logos, a hare, 

 and ovvxtov, onychion, a little nail ; in reference to the spines on 

 the shrub). Bieb. suppl. 288. D. C. prod. 2. p. 448. 



LIN. SYST. Decdndria, Monogynia. Flowers hermaphrodite, 

 many of which are abortive. Calyx 5-toothed. Petals 5, free. 

 Stamens 10, hypogynous, free. Anthers without glands. Style 

 twisted at the apex. Legume stipitate, indehiscent, ovate-cy- 

 lindrical, somewhat didymous, rather incurved, never toru- 

 lose, filled with pulp inside. A small shrub, with scattered, 

 prickles, bipinnate leaves, bearing 3-5 pairs of pinnae, and each 

 pinna bearing 10 pairs of leaflets, which are pubescent beneath. 

 This is a doubtful genus, which is perhaps not distinct from 

 Acacia. 



1 L. STEPHANIA'NUM (Bieb. 1. c.). Jj . H. Native of the 

 arid plains between the Caucasus and the Caspian sea, and of 

 Persia, between Mossul and Bagdad. Acacia Stephaniana, 

 Bieb. fl. taur. 2. p. 449. Mimosa micrantha, Vahl. in herb. 

 Michx. Buxb. cent. 3. t. 48. bad. Breyn. cent. 1. t. 56. f. 4. 



Stephan's Lagonychium. Fl. Jul. Aug. Clt. 1816. Sh. 1 to 2 ft. 



Cult. This shrub should be planted in a warm situation in 

 the open border, and sheltered by a mat in severe weather in 

 winter. It may be increased by seeds or layers, and very young 

 cuttings will root if taken off at a joint, and planted in sand, 

 with a hand-glass placed over them. 



CCXXXIII. ACA'CIA (from ac, a point, in Celtic, or from 

 acaw, akazo, to sharpen ; many of the species are furnished 

 with spines). Neck. elem. no. 1297. Willd. spec. 4. p. 1049. 

 Kunth, mim. p. 74. D. C. prod. 2. p. 448. 



LIN. SYST. Polygamia, Mona?cia. Flowers polygamous (f. 

 53. c. f. 54. &.). Calyx 4-5-toothed (f. 54. a.). Petals 4-5, 

 sometimes free (f. 53. a.), and sometimes joined together into 



VOL. II. 



a 4-5-cleft corolla. Stamens variable in number from 10 to 200 

 in each flower. Legume continuous, dry, 2-valved. Shrubs or 

 trees, very variable in habit and leaves. Spines stipular, scat- 

 tered, or wanting. Flowers yellow, white, rarely red, disposed 

 in globular heads or spikes, decandrous, or polyandrous, eleu- 

 therandrous or monadelphous. This is a very polymorphous 

 genus, which may hereafter be divided into several genera, when 

 the characters of the species are better known. The barks of 

 many of the species abound to such a degree in tanning principle 

 as to have become an object of commercial importance. 



SECT. I. PHYLLODINEJE (from (pv\\o>', phyllcn, a leaf; leaves 

 simple). Leaves of two forms, those in seedling plants are bi- 

 pinnate, but in the adult plants the leaflets are abortive, and 

 there only remains the dilated petiole, which is called a 

 phyllodium. Acaciae aphyllae, Wendl. diss. 1 820. Flowers in all 

 yellow. The species are mostly natives of New Holland. 



1. Capitatte (from capitatus, headed; disposition of 

 flowers). Flowers collected into globular heads ; heads solitary 

 on the peduncles, 



* Stipulas spinose. 



1 A. ALA TA (R. Br. in hort. kew. ed. 2. vol. 5. p. 461.) 

 stipulas spinose, permanent ; stem bifariously winged ; phyllodia 

 decurrent, 1-nerved, ending in a spine at the apex, and with the 

 upper margin furnished with a glandular tooth ; heads of flowers 

 solitary or twin. Tj . G. Native of New Holland, on the western 

 coast. Ker. hot. reg. 396. Wendl. diss. no. 1. t. 1. Coll. hort. 

 rip. 1. t. 17. Reich, mag. gart. t. 88. Flowers yellow. 



Jl'inged-stemmed Acacia. Fl. April, July. Clt. 1803. Sh. 

 6 to 1 feet. 



2 A. DOLABRIFORMIS (Wendl. 1. c. no. 38.) stipulas deciduous 

 or wanting ; branches rather angular ; phyllodia linear, some- 

 what falcate, rather decurrent at the base, obliquely and emar- 

 ginately truncate at the apex, with the lower lobe ending in a 

 pungent mucrone. fj . G, Native of New Holland. Flowers 

 yellow. 



ZWnirj/orwz-leaved Acacia. Fl. April, July. Clt. 1818. 

 Shrub 4 to 6 feet. 



3 A. DECI'PIENS (R. Br. 1. c. p. 465.) stipulas spinescent, de- 

 ciduous ; phyllodia triangular and somewhat trapezoid, with the 

 nerve approximating the lower side, and drawn out into a spine 

 at the apex, the superior margin furnished with one acute 

 gland-bearing tooth ; heads many-flowered, usually solitary, fy . 

 G. Native of New Holland, on the south-west coast. Adiantutn 

 truncatum, Burin, fl. ind. t. 66. f. 4. Mimosa decipiens, Keen, 

 ann. hot. 1. p. 366. t. 8. Sims, bot. mag. 1745. A. dolabri- 

 formis, Coll. hort. ripul. p. 1. but not of Wendl. Peduncles 

 longer than the phyllodia. Branches glabrous. Flowers yellow. 



Var. ft, trapezoidea (D. C. prod. 2. p. 449.) stipulas deci- 

 duous ; phyllodia irregularly trapezoid, with the nerve approx- 

 imating the lower margin, and drawn out into a spine at the 

 apex, but the upper margin is furnished with 2 obtuse, gland-bear- 

 ing teeth ; young heads of flowers axillary, sessile, and usually 

 solitary. Tj . S. Native of New Holland, on the eastern coast. 

 Branches angular, glabrous. Perhaps a proper species. 



Deceiving Acacia. Fl. Mar. Ju. Clt. 1813. Sh. 3 to 6 ft. 



4 A. DELTOI'DEA (Cunningh. mss.) stipulas acicular, spines- 

 cent, twin ; phyllodia dolabriform, smooth, ending in a spine- 

 like mucrone, many-nerved, convex on the upper side, and 

 nearly straight on the lower ; branches slightly angular, pubes- 

 cent ; heads of flowers solitary, on peduncles, which are longer 

 than the phyllodia. fj . S. Native of New Holland, within 

 the tropic. 



Deltoid- leaved Acacia. Clt. 1824. Shrub 3 to 6 feet. 



5 A. BIFLORA (R. Br. hort. kew. 5. p. 463.) stipulas spines- 

 3 F 



