. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 494 ACERACEAE. Vol. II. Family 79. ACERACEAE St. Hil. Expos. Fam. 2 : 15., 1805. Maple Family. Trees or shrubs, with watery often saccharine sap, opposite simple and palmately lobed (rarely entire) or pinnate leaves, and axillary or terminal cymose or racemose regular polygamous or dioecious flowers. Calyx generally 5-parted, the segments imbricated. Petals of
. An illustrated flora of the northern United States, Canada and the British possessions, from Newfoundland to the parallel of the southern boundary of Virginia, and from the Atlantic Ocean westward to the 102d meridian. Botany; Botany. 494 ACERACEAE. Vol. II. Family 79. ACERACEAE St. Hil. Expos. Fam. 2 : 15., 1805. Maple Family. Trees or shrubs, with watery often saccharine sap, opposite simple and palmately lobed (rarely entire) or pinnate leaves, and axillary or terminal cymose or racemose regular polygamous or dioecious flowers. Calyx generally 5-parted, the segments imbricated. Petals of the same number, or none. Disk thick, annular, lobed, sometimes obsolete. Stamens 4-12, often 8 Ovary 2-Iobed, 2-celled; styles 2, inserted between the lobes, samaras, joined at the base and i-seeded (rarely 2-seeded). ascending; cotyledons thin, folded. The family consists of the following genus and Dipteronia Oliver, of central Asia, which differs from Acer in the samara being winged all around. There are more than loo species of Maples. filaments filiform. Fruit of 2 winged Seeds compressed. I. ACER [Tourn.] L. Sp. PL 1055. 1753. Besides the following, some 8 others occur species : Acer Pseudo-fldtanus L. Leaves simple, palmately lobed. Flowers in dense sessile lateral clusters, unfolding before the leaves. Petals none ; ovary tomentose ; samaras divergent. Petals present; ovary glabrous ; samaras incurved. Leaves pale and glabrous or but slightly pubescent beneath. Leaves bright green above, mostly 5-lobed. Wings of the samara broadened above the middle. Wings of the samara linear, scarcely broadened above. Leaves dark green above, mostly 3-lobed. Leaves densely whitish-pubescent beneath ; southern. Flowers corymbose, lateral, unfolding with the leaves. Flowers long-pedicelled, drooping; large trees. Leaves pale and nearly glabrous beneath. Leaves green and pubescent, at least on the veins, beneath. Flowers short-pedicelled, erect; shrub or small tree ; western. Flowers rac
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
