ACERACEAE 823 
Ae. glabra Willd. Tree: leaflets 5, or rarely 7; blades elliptic to elliptic- 
oblanceolate oe 6-8 mm. long: : corolla ad yellow; Mir petals n mm. 
lon psule em. in dia — (OH FETID-B E.)— 
Woods, pod ere rarely Coa Eu Plain, "Ala. o Okla., Kans., "Mich. and 
W Pa.—Spr. —The wood is used for artificial limbs a various utensils 
Faminy 11. ACERACEAE —MarrkE Faminy 
Shrubs or trees. Leaves opposite: blades simple or compound. Flow- 
ers perfect or polygamous, in cymes, racemes, or panicles, or often in con- 
gested clusters. Calyx of 4 or 5, or rarely more, deciduous sepals. Corolla 
of 4 or 5, or rarely more, petals, or wanting. Androecium of as many 
stamens as there are sepals or twice as many. Gynoecium of 2 more or 
less united carpels. Fruit 2 nutlets with wings (samaras).—Six genera 
and more than 100 species, in the north temperate zone 
Leaf-blades simple: flowers polygamous, monoecious, 2 UD TECON or androdioe- 
cious ; disk present : p ellipsoid or oval, not ti ippe 
Flowers in terminal racemes or panicles: stigmas shorter 
than the style. 1. ACER. 
Flowers Pn lateral or E clusters: stigmas as long 
as style or lon 
FO ihe filiform-pedicelled, in drooping clusters ap- 
pearing with the leaves: sepals united into a lobed 
eup-like calyx, the staminate and pistillate similar. 2. SACCHARODENDRON. 
Flowers sessile or short-pedicelled, in dense lateral in- 
volucrate clusters, appearing before the leaves. 
Sepals united, the staminate and pistillate calyx 
very disti nct: petals wanting. 9. ARGENTACER. 
DUE MARCO EE of the staminate and pistil- 
e flow petals present. 4. RUFACER: 
e Dana E flowers dioecious: disk 
wanting: anthers linear, minutely tipped. 5. NEGUNDO. 
1. ACER L. Shrubs or trees. Leaf-blades broad, coarsely toothed or 
3—5-lobed. Flowers borne in terminal racemes or panicles, appearing after the 
leaves, polygamous. Calyx of usually 5 distinct or slightly united sepals. 
etals 5, narrower or broader than the sepals. Stamens exserted or included: 
stigmas shorter than the en 30 species, North American and Eura- 
eee d LES. ACER 
the sepals. . Á. BE soi 
Flowers m drooping racemes: d obovate, about as long 
as the sepals or slightly longer 2. A. pennsylvanicum. 
. am. Shrub, or small tree 10 m. tall, the bark thin, relatively 
smooth: leaf-blades od jud than broad, mainly 3 ‘lobed, sometimes \ wit th 
i 
a 
Scot stamens exserted : m it E. en, about 
3.5 
IN-MAPLE. - —Damp 
woods, Blue Ridge and pd ocn dad 
inees, Ga. to Man. and Newf.—Spr m 
sum.—The Ende is soft, and li p 
A. pennsylvanicum L. Shrub tree, 
a over 11 m. tall, the bark relatively 
smooth, loupitudinally striped: leaf-blades 
