77 
MAPLES. 
(Erable, Fr.) 
Natural Order , Acerine^e. (Decand.) Linncean Classifica- 
tion ; POLYGAMIA Or OcTANDRIA, MoNOGYNIA. 
ACER.* (Tournefort.) 
Flowers polygamous. — The calyx 5-lobed, or 5 parted. Petals 5 or none. 
Stamens rarely 5, often 7 to 9 ; ovarium 2-lobed, stigmas 2. Samar ex 
or pericarps in pairs, winged, united at base ; each, by abortion, 1 or 
rarely 2-seeded, the wings of the pericarp lanceolate and diverging, 
thicker and blunt on the outer margin. Embryo curved, with wrinkled 
leafy cotyledones, and an inferior radicle : albumen none. 
Trees and shrubs of temperate climates, chiefly of Europe and North 
America, the leaves opposite as well as the branches, palmate! y lobed. 
Flowers clustered, or pendulously racemose, arising from buds of the pre- 
ceding season, mostly lateral. 
LARGE LEAVED MAPLE. 
ACER macrophyllum ; foliis digitato- 5 -lobis , sinubus rotundatis , lobis 
subtrilobatis repando-dentatis , subtis pubescentibus , racemis erectis, fila- 
mentis 9, hirsutis , ovariis hirsutissimis. Pursh. Flor. Amer. Sept, 
vol. 1, p. 267. Decand. Prod. vol. 1, p. 594. 
Acer macrophyllum ; leaves large, very deeply 5-lobed ; lobes oblong 
or slightly cuneiform, entire, or sinuately 3-lobed, the margins some- 
what repand ; racemes nodding ; flowers rather large ; petals obovate ; 
fruit hispid, with elongated slightly diverging glabrous wings. Torre y 
and Gray, Flora N. Amer. vol. 1, p. 246. 
Acer Macrophyllum . Hooker’s Flora Boreali Americana, vol. 1, p. 112, 
t. 38. 
*From the Latin, acer , sharp ; the wood having been used for pikes or 
lances. 
