Order 40.— THE MAPLES. ig^ 



b Common petiole winged between the leaflets. . . .No 7 

 b Common petiole not winged.. Nos 8-10 



Va^eHanSvmac. Smoke Tree. Leaves obovatc, entire, thick. Flowers 

 . ortive, pedicels diffusely branched, hairy Italy -^JO^^eis 



p::lt°::t- ^!--r\^"^^"^^:-"^^^^.^-- Flowersmmute. Mts. S. 



or? ,^„_ *,. ^ ' --1 "^"i^ «.i uase. r lowers minute. Mts. S 



%Z J'^'fi^-'' ,^,H aromatic shrub, 2-6f. Leaflets sessile, ovate 



4R vf^rta''/Z . ^;7-S'^'-^-'--"y--ecl,sour. Ma,. Not poiso . ' 



4R.venenata. /ot,o«^. 2>05r-^6W^. Very smooth; leaflets 7-13, oval, pointed verv 

 entu-e. Drupes greenish yellow, smooth. A small tree, 10-15f. i.^^'^^TstZ 

 Tiie most venomous of the species. (Fig. 429'.) '■^^an^ps. 



Jnne. 



......in wi mc epecies. ^J^ig. 429'.) 



5 R. toKicoden'dron. Poison Oak. Poison Ivy. Erect or declining 2-3f Leaflets 3 

 fiR 'r"^'''?;'^''"''"*-^^'^^^'^^^^'"y- drupes smooth. June ^'^^''^ ^^ 



6 R. radicals. r/z^;.ir«^ Ivy. stems climbing trees, etc., by innumerable radi-itin. 

 TRcZmt ^;;««^;-f,—th, entire. Eeputed poi'so/ous. ^if ' ^^'"^ 

 8rX^ % "'"'^""^"'- S^™b'l-6f. Leaflets 9-21. July. 



liZI^ Cr..w^. Leaflets 9-17, coarsely toothed. Poisonous. Carolina 

 9R.typh'ma. Stag-horn S. Branches and petioles woolly. Leaflets 1^31 lance ob 

 10 R JiaL T'rrf'c I^™P- red, acid; wood yello.' ^.„.. Su i 10 J ' 



hthFlorin. ^--/V^"'^^^'^"^^^'^^^' -^^tened beneath. Shrub6-15f. 

 ni„li Flowers in terminal, dense panicles, greenish red. Fruit clothed witl, rrim 

 son fur which is excessively sour to the tastl Bark used in tanning: 



Order XL. ACERACE^. The Maples. 



Trees or shruls with opposite, usually simple palmate-veined leaves • the 

 flowers often imperfect, with the 5 sepals imbricated in the bud and'the 

 petaU 5, hypogynous, sometimes ; the stamens mostly 8, and the 

 fruit a double samara, with two opposite wmgs, 2-seeded. 



Analysis of the Genera. 

 Leaves simple, palmate- veined. Very common. Mavle Aovn i 



Leaves compound, odd-pinnate. Leaflets 3-5, toothed. £ox-i;ider. N^otZo. 



1. ACER. Maple. 



Calyx of5 united sepals, 5-lobed. Petals 5 or 0. Styles 2. Stamens 

 6-8. Leaves simple, palmate-lobed. Flowers mostly polygamous. 



§ Pedicels short, in side clusters, flowering be/ore the leaves. Trees 1 2 

 § Pcd.ce s long, slender, drooping, flowering with the Ivs. Large trees "..'3 4 

 § Pedicels in racemes, flowering after the leaves 5-7 



' ^''ZZl^O "^'"'!,^' ^T" '^^^'^ Jobed,';q;,are at base, silver-white 

 beneath. Ovaries downy. Fruit very large, Petals 0. Tree 50f. 



