412 



LEGUMINOS^E. CCXXXIII. ACACIA. 



158 A. SE'NEGAL (Willd. spec. 4. p. 1077. exclusive of figure 

 cited,) prickles stipular, straight, short ; leaves with 5-8 pairs of 

 pinnae, each pinna bearing 15-18 pairs of oblong-linear obtuse 

 leaflets, which are glabrous, as well as the petioles and branches, 

 with a sessile gland between each of the pairs of pinnae on the 

 petiole; spikes axillary, solitary, slender. Jj .S. Native of Arabia, 

 and the interior of Africa. Mimosa Senegal, Lin. spec. 1506. 

 Flowers small, glabrous, distant. Branches white. Prickles 

 sometimes wanting. Axillary branches abortive, and becoming 

 spines. The spines at the base of the leaves are said to be three 

 by Linnaeus. Gum-senegal is the produce of this tree ; it is 

 usually sold in the shops as gum-arabic ; its medicinal uses are 

 the same, and it is procured in the same way from the trees. It 

 was not until the beginning of the 17th century that the Dutch 

 made gum-senegal known in Europe. After the French got 

 possession of that river they directed their attention to it as an 

 important object of commerce, and ascertained by experiments 

 made in the latter half of the 1 7th century that gum-senegal was 

 superior to the best gum-arabic. M. Adanson examined all the 

 gum trees of West Africa with great care. They amount to 40 in 

 number, but the three great forests which supply the Senegal 

 market consist chiefly of two kinds, one which produces a white 

 gum called vereck, and another called nebueb, which yields a 

 red gum. 



Senegal Acacia. Clt. 1823. Tree 20 feet. 



159 A. A'LBIDA (Delil. fl. aegypt. 143. t. 52. f. 3.) prickles 

 stipular, straight ; leaves with 3-4 pairs of pinnse, each pinna 

 bearing 9-10 pairs of oblong-linear, obtuse, rather mucronate, 

 glaucous leaflets, which are glabrous, as well as the branches, 

 with a sessile gland between each of the pairs of pinnae ; spikes 

 cylindrical, exceeding the leaves. Tj . G. Native of Upper 

 Egypt, near Syene. Legume unknown. 



JVhite-\eave<\. Acacia. Tree 20 feet. 



160 A. MONACA'NTHA (Willd. enum. 1056.) prickles stipular, 

 infra-axillary, solitary, recurved ; leaves with usually 8 pairs of 

 pinna?, each pinna bearing 17-20 pairs of oblong leaflets ; spikes 

 cylindrical, panicled, axillary. Tj . S. Native of Brazil. 



One-spiked Acacia. Clt. 1818. Tree. 



161 A.DA'LEA (Desv. journ. bot. 1814. vol. 1. p. 69.) spines 

 straight, elongated, solitary, pubescent, stipular ; leaves bipin- 

 nate, pubescent ; spikes 3-together, axillary, on short peduncles. 

 *2 . S. Native of the East Indies. Flowers rose-coloured. 



Dalea-like Acacia. Tree. 



162 A. SPINI (Balb. in Spin. cat. supp. 1823. p. 8. Col. hort. 

 ripul. append, t. 5.) prickles stipular, infra-axillary, solitary, 

 hooked; leaves with 3-4 pairs of pinnae, each pinna bearing 3-5 

 pairs of elliptic leaflets, the lower ones the smallest ; spikes cylin- 

 drical, solitary or twin, axillary. fj . S. Native country un- 

 known. Flowers greenish yellow. Legumes coarctate between 

 the seeds, prickly on the sutures. 



Spini's Acacia. Shrub 5 to 8 feet. 



163 A. CORNIGERA (Willd. spec. 4. p. 1080.) prickles or spines 

 stipular, connate at the base, compressed, large ; leaves with 6 

 pairs of pinnae, each pinna bearing about 20 pairs of glabrous 

 leaflets ; gland petiolar ; spikes axillary, cylindrical. Jj . S. 

 Mimosa cornigera, Lin. spec. ed. 1. p. 520. Flowers pale yel- 

 low. The two large connate spines resemble the horns of an ox. 



Far. a, Americana (D. C. prod. 460.) spines brown. Tj . S. 

 Native of Mexico, Cuba, and in the woods of Carthagena. 

 Pluk. phyt. t. 122. f. 1. Comm. hort. 1. t. 107. Jacq. amer. 

 266. The legume is filled with pulp according to Jacquin, and 

 it is therefore probably a species of I'nga or Prosopis. 



Far. ft, 1'ndica (D. C. 1. c.) spines yellow. J? . S. Native of 

 the East Indies. Seba, thes. l.t. 70. f. 13. 



Horn-bearing Acacia or Cuckold-tree. Clt. 1692. Tree 10 

 to 14 feet. 



164 A. TENUIFLO'RA (Willd. spec. 4. p. 1088.) prickles scat- 

 tered, incurved; leaves with 5 pairs of pinnae, each pinna bear- 

 ing many pairs of ciliated leaflets ; petioles pubescent, rather 

 prickly ; spikes filiform, length of the leaves. fj . S. Native 

 of Caraccas. Legumes membranous, sub-lanceolate, 3-5-seeded. 



l'"inc-jlowcred Acacia. Tree. 



165 A. MODE'STA (Wall. pi. rar. asiat. 2. p. 27. t. 130.) arbo- 

 reous ; branches flexuous ; spines axillary, subulate ; leaves with 

 2-3 pairs of pinnae, each pinna bearing 4 pairs of oblong, obtuse, 

 glabrous, glaucous leaflets ; petioles pilose, bearing 1 gland in 

 the middle ; spikes axillary and terminal, usually solitary, cylin- 

 drical, nodding, on short peduncles ; flowers hermaphrodite ; 

 filaments distinct, twice the length of the corolla ; legume stipi- 

 tate, linear-oblong, flat, glabrous, rather membranous, C-seeded, 

 acute at both ends. Jj . S. Native of Hindostan. Flowers 

 white, fragrant. Spines twin, stipular. 



Modest Acacia. Fl. April. Shrub 8 to 12 feet. 



166 A. LATRO'NUM (Willd. spec. 4. p. 1077.) spines stipular, 

 twin, connate ; leaves with 4 pairs of pinnae, each pinna bearing 

 many pairs of small leaflets ; spikes usually twin, elongated, 

 axillary ; legume semi-lunate. Jj . S. Native of the East In- 

 dies. Mimosa latronum, Lin. fil. suppl. 438. Spines milk-co- 

 loured, straight. Flowers white. This species of Acacia form 

 impenetrable thickets from their interwoven branches and terrible 

 spines in the mountainous parts of India, and are the secure re- 

 treat of the smaller animals and rogues. Lin. suppl. 



Rogue's Acacia. Clt. 1820. Shrub 4 to 6 feet. 



167 A. A'ZAK (Willd. 1. c.) spines stipular, 3-together? 

 straight ; leaves with 3 pairs of pinnae, each pinna bearing 5 pairs 

 of leaflets, with a gland on the petiole between the lower pair of 

 pinnae. fj.G. Native of Arabia Felix. Mimosa A'zak, Forsk. 

 descr. 176. Vahl. symb. 2. p. 104. Flowers and fruit unknown. 

 Azak is the Arabian name of the tree. 



Azak Acacia. Shrub. 



168 A. 1 CADU'CA (Humb. et Bonpl. in Willd. spec. 4. p. 1089.) 

 prickles scattered, rather hooked ; leaves with 4-6 pairs of 

 pinnae, each pinna bearing 5-10 pairs of oblique, oval, obtuse 

 leaflets, which are pubescent beneath, without any gland on the 

 petioles ; spikes ovate, pedunculate, axillary, solitary or twin ; 

 stamens 8-10 ; legumes ciliated, with prickles. ^ S. Native 

 of Peru, near Gualtaquillo on the banks of the river Cachiyacu. 

 Kunth, nov. gen. amer. 6. p. 266. Legume hardly known. 



Caducous Acacia. Tree. 



169 A. PROSOPOIDES (Moc. et Sesse, fl. mex. icon. ined. D. 

 C. prod. 2. p. 460.) prickles few, scattered, hooked at the apex ; 

 leaves with 2-3 pairs of pinnae, and each pinna bearing 2-3 pairs 

 of oval, oblong, obtuse, glabrous leaflets ; spikes usually twin. 



J? . S. Native of New Spain. Corolla 5-cleft, reddish. Sta- 

 mens 10. Legume unknown. 

 Prosopis-like Acacia. Tree. 



170 A. ADIANTOIDES (Spreng. syst. 3. p. 146.) prickles short, 

 few, straight; petioles tomentose ; leaves with 4 pairs of pinna?, 

 each pinna bearing usually 8 pairs of alternate, dimidiately-ob- 

 long, obtuse, shining leaflets ; spikes axillary, sessile. fj . S. 

 Native of Brazil, Sello. 



Adiantum-like Acacia. Tree. 



171 A. HOSTI'LIS (Mart. reis. bras, ex Schlecht. Linnaea. 5. 

 p. 43.) shrubby, branches elongated, spreading- ; prickles scat- 

 tered, straight ; leaves bipinnate, clothed with clammy pubes- 

 cence, with 4-6 pairs of pinnae, each pinna bearing 20 pairs of 

 linear leaflets ; stipular prickles and those between the stipulas 

 straight ; spikes solitary ; legumes membranous, linear-oblong, 

 2-3-seeded, pubescent. fj . S. Native of Brazil. 



Hostile Acacia. Shrub. 



SECT. IV. GLOBIFLO'RJE (from globus, a globe, and fios, a 



