. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. II. GYMNOSPERMS. Ovules not enclosed in an ovary, fertilized by the pollen without the intervention of a pistil, and becoming truly naked seeds, the carpel being represented by a flat open scale or entirely wanting. Embryo with 2 opposite, or several whorled cotyledons. Order CXXXI. CONIFERJE.—Conifers. Trees or evergr
. A class-book of botany, designed for colleges, academies, and other seminaries ... Illustrated by a flora of the northern, middle, and western states; particularly of the United States north of the Capitol, lat. 38 3/4. Botany; Plants -- United States; Plants -- Canada. II. GYMNOSPERMS. Ovules not enclosed in an ovary, fertilized by the pollen without the intervention of a pistil, and becoming truly naked seeds, the carpel being represented by a flat open scale or entirely wanting. Embryo with 2 opposite, or several whorled cotyledons. Order CXXXI. CONIFERJE.—Conifers. Trees or evergreen shrubs, with branching trunks, abounding in a resinous juice. Lvs. scattered or fascicled, linear or acerose (rarely lanceolate), parallel-veined, rigid, generally evergreen. Fls. monoecious or dioecious, destitute of calyx or corolla. Sterile, monandrous or monadelphous, collected iii a kind of loose ament. Anth. 2 or many-lobed, otlen tipped with a crest. Pollen large, usually compound. Fertile, in aments composed of open, scale-like carpels, or solitary and without a carpel. Ovary, style and stigma wanting. Ovules l, 2 or many, erect or inverted. Fr.—K strobile (cone), or a solitary seed. Integuments hard and crustaceous. Embryo in the axis of oily albumen. Genera 29, species 130, natives of all climates, but most abundant in the temperate zones, those of the southern, however, very difl'erent from the pines, spruces, larches and cedars of the northern. Properties.—Few orders can be named, which are of more importance to mankind, whether in refer- ence to their invaluable timber or their resinous secretions. Turpentine, tar, pitch and resin are the product of the pines. Burgundy pitch is yielded by Finus sylvestris of Europe ; Venetian turpentine, by the Larix; oil of Savin by Juniperus Sabina of Europe, & FIG. 51.—1. Branch of Thuja occidentalis, with iitrobile<). 2. A magnified bmnchlet with n cone of stuminafe flowers. 3. A corpellary scale with the
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectbotany, bookyear1848
