648 



ACERINEJE. I. ACER. 



3 DOBINEA. Flowers monoecious. Calyx campanulate, 4- 

 toothed. Stamens 8, connate into a column around the sterile 

 style. Leaves simple. 



I. A V CER (acer, in Latin, signifies hard or sharp, which 

 comes from ac, a point, in Celtic. The name is applied to this 

 genus because the wood is extremely hard, and was formerly 

 much sought after for the purpose of making pikes and lances, 

 &c.). Mcench. meth. 334. and Nutt. gen. amer. 1. p. 253. 

 A'cer, spec. Lin. gen. no. 1115. D. C. prod. 1. p. 593. 



LIN. SYST. Polygdmia, Monoecia. Flowers polygamous. 

 Calyx 5-lohed, sometimes 5-parted. Stamens rarely 5, but 

 usually 7-9. Leaves simple, usually lobed. Flowers of all 

 greenish or greenish-yellow. 



1 . Flowers racemose. 

 * Leaves simple. 



1 A. OBLONGUM (Wall, in litt. D. C. prod. 1. p. 593.) leaves 

 oblong-lanceolate, acuminated, quite entire, coriaceous, smooth, 

 rounded at the base ; racemes compound ; wings of fruit pa- 

 rallel, smooth, separated. ^ . H. Native of Nipaul at Narain- 

 hetty. Leaves rather glaucous on the under surface. Young 

 fruit hairy on the disk, with smooth short wings. A. lauri- 

 folium, D. Don, prod. fl. nep. p. 249. A. Buzimpala, Hamilt. 

 mss. Flowers pale-yellow. This tree is called in Nipaul 

 Moogila and Buzimpala. 



Oblong-leaved Maple. Fl. Feb. Clt. 1824. Tree 20 feet. 



2 A. LEVIGA'TUM (Wall. pi. rar. asiat. 2. p. 3. t. 104.) leaves 

 oblong, acuminated, serrulated, shining, smooth ; corymbs ter- 

 minal ; petals cuneated ; wings of fruit diverging, cultriform. 

 Tj . H. Native of Nipaul on high mountains. Flowers white. 



Smoothed-]eaved Maple. Tree 40 feet. 



3 A. TATA'RICUM (Lin. spec. 1495.) leaves cordate, undivided, 

 serrated, with obsolete lobes ; racemes compound, crowded, 

 erect ; wings of fruit parallel, young ones puberulous. I? . H. 

 Native of Tartary Pall. fl. ross. t. 3. Tratt. arch. 1. no. 1. 

 with a figure. Wats. dend. brit. 160. Corolla white. 



Tartarian Maple. Fl. May, June. Clt. 1759. Tr. 20 ft. 



* * Leaves 3-loled or trifid, very rarely 5-lobed. 



4 A. STRIA' TUM (Lam. diet. 2. p. 381.) leaves cordate, 3- 

 lobed, acuminated, finely and acutely serrated ; racemes simple, 

 pendulous ; petals oval ; fruit smooth, with the wings rather 

 diverging. ?j . H. Native of North America from Canada to 

 Carolina. Mich. fil. arb. 2. t. 17. A. Pennsylvanicum, Lin. 

 spec. 1496. Tratt. arch. 1. no. 11. with a figure. A. Cana- 

 dense, Duh. arb. 1. 1. 12. Mill. t. 7. Trunk elegantly striped 

 with white lines. Flowers greenish-yellow. There is a variety 

 of this tree with undivided leaves, but it is extremely rare. 



/Striped-barked Maple. Fl. May. Ju. Clt. 1755. Tr. 20 ft. 



5 A. SPICA'TUM (Lam. diet. 2. p. 381.) leaves cordate, 3 or 

 slightly 5-lobed, acuminated, pubescent beneath, unequally and 

 coarsely serrated ; racemes compound, erect ; petals linear ; 

 fruit smooth, with the wings rather diverging. >j . H. Native of 

 Canada and the Allegheny mountains. A. montanum, Ait. hort. 

 kew. 3. p. 435. Tratt. arch. 1. no. 13. with a figure. A. Penn- 

 sylvanicum, Duroi. harbk. t. 2. A. parviflorum, Ehrh. Flowers 

 very small, greenish-yellow. 



Spiked-fiov/ered Maple. Fl. April, May. Clt. 1750. Tree 

 25 feet. 



6 A. HY'BRIDUM (Bosc. diet. agr. 5. p. 251.) leaves rather 

 cordate, somewhat coriaceous, smooth, profoundly trifid, with 

 the lobes unequally and coarsely toothed ; racemes pendulous ; 

 fruit smooth with diverging wings. Jj . H. Native of? Flowers 

 greenish-yellow. 



Hybrid Maple. Fl. May, June. Clt. ? Tree 20 feet. 

 * * * Leaves 5-lobed. 



7 A. PSEU'DO-PLA'TANUS (Lin. spec. 1469.) leaves cordate, 

 smooth, with 5 acuminated, unequally-toothed lobes ; racemes 

 pendulous, rather compound, with the rachis as well as the fila- 

 ments of stamens hairy ; fruit smooth, with the wings rather 

 diverging. 1? . H. Native of Europe, particularly in Switzer- 

 land, Germany, Austria, and Italy in wooded mountainous situa- 

 tions. Duh. arb. 1. t. 36. Tratt. arch. 1. no. 2. with a figure. 

 Schm. arb. 1. p. 3. 4. Flowers yellowish-green. A large tree, 

 usually clear of branches to a considerable height. It was for- 

 merly much planted for walks and avenues, but has given way to 

 better and more sightly trees. However this tree with some 

 other species are peculiarly proper for making plantations near 

 the sea, or to shelter other trees in that situation, for they resist 

 the spray better than most trees. It grows sometimes to 13 or 

 14 feet in girth. Before earthenware came into use at the 

 table, the wood of the Sycamore, which is soft and white, was in 

 much request for trenchers. It is still used by turners for bowls, 

 dishes, &c., by saddlers for saddle-trees, and is recommended as 

 excellent for cart and plough-timber, being light and tough. It 

 is, however, inferior to the ash for these purposes. It is a quick 

 growing tree. In spring and autumn this tree will pour forth, 

 from the wounded stem, in the same manner as the birch, abund- 

 ance of saccharine juice, from which sugar and good wine may 

 be made, as Ray affirms from the information of Dr. Martin 

 Lister. The tree in England is vulgarly called Sycamore-tree 

 and by some Mock-plane. In Scotland it is known by the ap- 

 pellation of Plane-tree. 



Var. ft, variegata ; leaves variegated. 



Var. y, subobtusum (D. C. prod. 1. p. 594.) lobes of leaves 

 blunter ; fruit and wings larger. A. opulifolium. Thuil. fl. 

 par. 538. A. vitlfolium, Opiz. 



Var. e, lacinidtum (Loud. hort. brit. p. 412.) lobes of leaves 

 jagged. Schm. arb. 1. 5. 



Mock-plane-tree, Sycamore, or Great Maple. Fl. May, 

 June. Clt. 1683. Tree 30 to 60 feet. 



8 A. VILLOSUM (Wall. pi. rar. asiat. 2. p. 4.) leaves cordate, 

 5-lobed, villous beneath as well as the petioles ; lobes ovate, 

 acute ; racemes lateral ; buds and young leaves silky-villous ; 

 petals bearded at the apex ; fruit villous, with straightish cultri- 

 form, crenulated wings. Jj . H. Native of the high Alps near 

 to perpetual snow in Sirmore and Kamaoon. Flowers fragrant. 



Villous Maple. Tree 50 feet. 



9 A. CAUDA'TUM (Wall. pi. rar. asiat. 2. p. 4.) leaves cordate, 

 5-lobed, pubescent beneath, and villous in the axils of the veins 

 and nerves, but when aged smooth ; lobes ovate, acuminated, 

 doubly serrated ; serratures awned ; racemes smooth ; wings 

 of fruit diverging, fj . H. Native of Nipaul towards Gosaings- 

 than. A.pectinatum, Wall. mss. 



7az7e</-lobed-leaved Maple. Tree 50 feet. 



10 A. MACROPHY'LLUM (Pursh. fl. amer. sept. 1. p. 267.) leaves 

 digitately 5-lobed, with roundish recesses ; lobes somewhat 3- 

 lobed, repandly-toothed, pubescent beneath ; racemes compound, 

 erect ; stamens 9, with hairy filaments ; ovaries very hairy. ^ . 

 H. Native of North America on the great rapids of the Colum- 

 bia river, and of northern California. Flowers greenish-yellow. 



Long or Large-leaved Maple. Fl. May, June ? Clt. 1812. 

 Tree 60 feet. 



11 A. STERCULIA'CEUM (Wall. pi. rar. asiat. 2. p. 3. t. 105.) 

 leaves cordate, puberulous beneath, 5-lobed ; lobes ovate, acu- 

 minated, serrated, outer ones very short, and quite entire ; ra- 

 cemes lateral ; petals smooth. 1? . H. Native of Nipaul on 

 Mount Shiapore. Flowers white. Tree 3 feet in diameter. 



Sterculia-likeMa-ple. Tree 50 feet. 



