. Our native trees and how to identify them; a popular study of their habits and their peculiarities. Trees. MOUNTAIN MAPLE Calyx. — Five-lobed, lobes obovate, downy, much shorter than the petals ; disk annular. Corolla.—Petals five, linear-spatulate, greenish yellow, imbricate in bud. Stamens.—Seven to eight, inserted on the disk, filaments thread- like, exserted in the sterile and abortive in the fertile flowers ; an- thers oblong, attached at base, introrse, two-celled ; cells opening longitudinally. Pistil.—Ovary superior, tomentose, two-lobed, two-celled, com- pressed contrary to the diss
. Our native trees and how to identify them; a popular study of their habits and their peculiarities. Trees. MOUNTAIN MAPLE Calyx. — Five-lobed, lobes obovate, downy, much shorter than the petals ; disk annular. Corolla.—Petals five, linear-spatulate, greenish yellow, imbricate in bud. Stamens.—Seven to eight, inserted on the disk, filaments thread- like, exserted in the sterile and abortive in the fertile flowers ; an- thers oblong, attached at base, introrse, two-celled ; cells opening longitudinally. Pistil.—Ovary superior, tomentose, two-lobed, two-celled, com- pressed contrary to the dissepiment, wing-margined ; style colum- nar ; stigma two-lobed. Ovules two in each cell, one of which aborts. In sterile flowers the pistil becomes a tuft of white hairs. Fruit.—Two samaras united, forming a maple key ; bright red in July, brown in autumn ; smooth, borne in a pendulous raceme. Wings more or less divergent. Seeds dark brown. September. Cotyledons thick and fleshy. The Mountain Maple is another example of a tree that has accepted its bonne in the shade of other trees. It grows on moist rocky hillsides and ranges across the continent westward to the Rocky Mountains, northward to the valley of the St. Lawrence River, and southward to Georgia. At the north it is a shrub, often seen growing by the side of a mountain road. It is our one maple that bears an upright raceme of flowers, but when the flowers have given place to fruit the raceme droops. The fruits of all the maples are very similar. An acorn is no more the char- acteristic fruit of the oaks than the maple key is of the maples. This is a double samara, composed of two carpels, separ- able from a small persistent axis ; these carpels are compressed laterally, and each is produced into a reticulated wing. These wings are thick on the lower mar- gin, but very thin and papery on the upper. The keys do not fly as i they would were they better balanced, but they 65. Keys of Mountain Maple, ^ccr
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Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1912
