. 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 102nd meridian. Botany. ACERACEAE. 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 entirej 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 no
. 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 102nd meridian. Botany. ACERACEAE. 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 entirej 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; filaments filiform. Ovary 2-lobed, 2-celled; styles 2, inserted between the lobes. Fruit of 2 winged samaras, joined at the base and i-seeded (rarely 2-seededj. Seeds compressed, ascending; cotyledons thin, folded. The family consists of the following genus and Diftcronia OYv from Acer in the samara being winged all around. There are more Df central Asia, which differs 1 100 species of Maples. ACER [Tourn.] L. Sp. PI. 1055. Besides the following, some 8 others occur in southern and species: Acer Pseudo-pliitanus 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 racemed, terminal, unf
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1913
