. Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. 376 THE KINDS OF PLANTS 1. CARDIOSPERMUM. Balloon-vine. Heart-seed. Vines climbing by axillary, hook-like tendrils among flower-clusters: leaves alternate, biternate, leaflets toothed: flowers dioecious, or some per- fect; sepals 4, 2 of them smaller; petals 4, irregular, each with an appendage at inner base; stamens 8, filaments un- equal; style short, 3-cleft; ovary triangular, 3-celled, 1 ovule to each cavity: capsule membranous, much inflated. C. Halicacabum, Linn. Climbing or spreading
. Botany for secondary schools; a guide to the knowledge of the vegetation of the neighborhood. Plants. 376 THE KINDS OF PLANTS 1. CARDIOSPERMUM. Balloon-vine. Heart-seed. Vines climbing by axillary, hook-like tendrils among flower-clusters: leaves alternate, biternate, leaflets toothed: flowers dioecious, or some per- fect; sepals 4, 2 of them smaller; petals 4, irregular, each with an appendage at inner base; stamens 8, filaments un- equal; style short, 3-cleft; ovary triangular, 3-celled, 1 ovule to each cavity: capsule membranous, much inflated. C. Halicacabum, Linn. Climbing or spreading herb, delicate and slender: leaflets ovate-lanceolate, acute, cut and toothed: flowers small, white: fruit large, balloon-like, decorative; seeds black with 523, '524 white scar, hard, round. Cultivated. Acer saccharinum. Acer rubrum. Summer. 2. ACER. Maple. Box-elder. Trees or shrubs, with opposite lobed or parted leaves (pinnate in box- elder): flowers small and greenish or reddish, in early spring and often from winter buds, in box-elder dioecious, in true maples perfect (or imperfectly diclinous); calyx about 5-cleft; petals 5 or none; stamens usually 3-8: fruit a samara with 2 seeds and 2 wings. Two shrubby woods maples are common in some parts of the country. a. Maples: leaves simple, palmately lobed. b. Flowers from lateral winter buds, preceding the leaves: fruit maturing very early. A. saccharinum, Linn. (A. dasycdrpum, Ehrh.). While or silver maple. Fig. 523. Flowers greenish, with no petals: leaves very deeply 5-lobed, silvery white beneath, the narrow divisions lobed and toothed: fruit with large spreading wings, downy when young. Common along streams and in low grounds; much planted. There is a cut-leaved form known as Wier's maple, popular as a lawn tree. Wood white. Linnaeus thought it to be the sugar maple, hence his name "; A. rubrum, Linn. Red, soft, or swamp maple. Fig. 524. Tree usually of only medium size: flowers red, with narrow- obl
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectplants, bookyear1913
