54 DICOTYLEDONOUS. 



3. A. Sacharintjm. A large tree, with compact, white wood, and from 

 the peculiar arragement of its woody tissues often exhibits an appearance 

 distinguished by artists and meciianics by Birds-eye Mnple. Leaves 3-5- 

 lobed acuminate, dentate, sub-cordate at the base. Flowers in nearly sessile 

 corymbs, with filiform long villous pedicels, pendulous. Petals wanting. 

 Fruit glabrous. Siigar Maple. 



Greenish yellow. T^ May. Cool, damp places. Middle Geo. 50-80 ft. 



4. A. Dasycarpum. A large tree. Leaves palmate, deeply 5-lobed, acu- 

 minate, serrate, and incised, pubescent underneath, almost white. Flowers 

 small in fascicies with very short pedicels. Petals wanting. Fruit yellow- 

 ish, wings large, pubescent when young. Soft Maple. 



Pale yellowish purple. Feb. In river swamps, common. 50-70 feet. 



5. A. RuBRUM. A small tree. Leaves cordate, 3-5-lobed, serrate, glau- 

 cous beneath, lobes acute, doubly serrate, terminal one longest. Flowers in 

 small axillary fascicles. Petals linear or oblong, polygamous. Stamens 5-8. 

 Fruit glabrous, with slightly divergent wings, reddish. 



Scarlet Maple. Fed Maple. Swamp Maple. 

 Bright red or purplish. T^.- Feb. In swamps, common. 20-50 feet. 



6. A. Negundo. a middle sized tree.. Leaves pinnate, 3-5-leaflets, leaf- 

 lets petiolate-oval or ovate, unequally toothed towards the apex. Flowers 

 dioecious, in pendulous racemes. Pedhels of the staminate flowers filiform. 

 Petals none. Fruit oblong with pale yellow, obovate wings. 



Ashed leaved Maple. Box Elder. 

 Yellowish green T^- May. Common on the banks of streams. 30-50 ft. 



Order XXXVI. HIPPOCASTANACE^. 



Calyx composed of 5 united sepals, either campanulate or 

 tubular, 5-lobed or 5 toothed, with imbricate aestivation. Pe- 

 /aZs 4-5, unequal and irregular, hyjjogynous, unguiculate. Sla-- 

 mens 7-8 distinct, unequal. Anthers versatile. Ovary com- 

 posed of 3 united carpels, 3-cornered, 3-celled. Styles umie^^ 

 filiform. Ouw/e^ 2 in each cell. Prw/i coriaceous, sub-globose, 

 1-2-3-celled with 1-seed in each cell, dehiscence loculicidal. 

 Seeds large with a smooth shining testa and pale iiihim. Em- 

 bryo curved, inverted without albumen. Cotyledons very thick, 

 fleshy, cohering, not rising in germination. 



Genus I. ^SCULUS. ' 



Sepals united, forming a 4-5 toothed, tubular calyx. Petals 

 4-6 unequal hypogynous, often united with the calyx. Capsule 

 2-celled. Seeds large, solitary. 



1. -^. Pavia. a shrub or small tree, with irregular, thick, obtuse bran- 

 ches. Leaves by fives. Leaflets oblong-lanceolate, unequally toothed, gla- 

 brous, or minutely pubescent along the veins. Flowers in terminal racemes. 

 Calyx tubular, purplish. Petals 4, unequal, connivent, the claws of the lat- 

 eral ones about as long as the calyx, upper ones the longest. Stamens 6-8. 

 Capsules nearly round, 3-celled, coriaceous. Buck-eye. 



Red. T^. April — May. Common. 3-5 feet. 



2. M. Flava. a small shrub, a tree, branches flexuous, glabrous. Leaves 

 by fives pubescent along the mid-rib on the under surface. Leaflets lanceo- 

 late, ribbed, acuminate serrate. Petiole long, with a pubescent line along 

 the upper side. Flowers in a terminal condensed panicle. Calyx pubescent,. 



