140 POPULAR FLORA. 



III. MAPLE Subfamily. Flowers generally polygamous or dinecious, regular. Petals often 

 none, but the calyx sometimes petal-like. Stamens 4 to 12. Styles 2, united below. Fruit a pair of 

 keys united at the bottom (Fig. 208). Leaves opposite. 

 Flowers dicecious, small and greenish : petals none : stamens 4 or 5. Leaves pinnate, 



with 3 to 5 veiny leaflets: twigs green, {Negundo) Negundo. 



Flowers polygamous or perfect. Leaves simple, palmately lobed, {Acer) Maple, 



Buckeye. ^Esculits, § Pavia. 



All wild species at the West and South: also cultivated for ornament: flowering in late spring or 

 summer. 



1. Fetid or Ohio Buckeye. Petals small, erect, pale A-ellow, shorter than the curved stamens; 



young fruit prickly like Horseohestnut; a tree. River-banks, W. ^.glabra. 



2. Sweet Buckeye. Petals yellow or reddish, erect, enclosing the stamens ; fruit smooth. JE.Jiava. 



3. Red Buckeye. Petals red, also the tubular calyx: otherwise like the last. Shrub. ^. Pavia. 



4. Small-kloweked B. Leaflets stalked; petals white, rather spreading; stamens very long; fruit 



smooth; seed eatable, not bitter, as are the others ; flowers in a long raceme-like panicle. Shrub. 

 S. & cult. A. pnrvifldra. 



Maple. Acer, 

 i^ Flowers in terminal racemes, with petals, greenish, in late spring: stamens 6 to 8. 



1. Striped JIaple. Bark green, with darker stripes; leaves large, with 3 short and taper-pointed 



lobes; racemes hanging. Small tree in cool woods; common, N. A. Pemisylvdmcum. 



2. Mountain W. Bark gray; leaves 3-lobed; racemes erect; flowers small. Shrub, N. A, spwaium. 

 8. Sycajioke M. An imported shade-tree, with large strongly 5-lobed leaves, and large hanging 



racemes, flowering soon after the leaves appear. A. Pseudo-Pldianus. 



* * Flowers in loose clusters, yellowish-green, appearing with the leaves, in spring. 



4. Norway 'M. An imported shade-tree, with leaves resembling Sugar JIaple, but brighter green on 



both sides, rounder, and with some long pointed teeth; flowers in an erect terminal corymb, with 

 petals; wings of the fruit very large, diverging. A. platanoides. 



5. Sugar or Eocic M. Leaves M'ith 3 or mostly 5 long-pointed lobes, their edges entire except a 



few coarse wavy teeth ; flowers hanging on very slender hairy stalks, without petals; fruit with 

 rather small wings, ripe in autumn. Tall tree; in rich woods, and commonly planted for shade. 



A. sacchdrinum. 

 * # * Flowers in early spring, considerably earlier than the leaves, on short pedicels, in small 

 umbel-like clusters from lateral leafless buds: stamens generally 5: fruit ripe and falling in early 

 summer. 



6. White or Silvef. M. Leaves very deeply 6-lobed, cut and toothed, white beneath; flowers 



greenish-yellow, short-stalked, without petals ; fruit woolly when young, with very large and 

 smooth diverging wings. Tree common on river-banks, and planted for shade. A. dasycdi-pum. 



7. Red or Soft M. Leaves whitish beneath, with 3 or 5 short lobes, toothed; flowera on very 



short stalks which lengthen in fruit, with linear-oblong petals, red or sometimes yellowish ; 

 wings of the fruit small, reddish. Wet places: a common tree. A. rubrum 



