Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . hin, variouslycurved or coiled cotyledons (Fig. 103 -105) ; otherwise nearly asin the true Sapindaceae. — Ex. Acer, the Maple ; useful timber-treesof northern temperate regions. Sugar is yielded by the vernal sapof Acer saccharinum, and in less quantity by all the species. 802. Ord. TolygalacefE. Herbs or shrubby plants, with simpleentire leaves, destitute of stipules. Flowers perfect, unsymmetrical,and irregular, somew
Introduction to structural and systematic botany, and vegetable physiology, : being a 5th and revedof the Botanical text-book, illustrated with over thirteen hundred woodcuts . hin, variouslycurved or coiled cotyledons (Fig. 103 -105) ; otherwise nearly asin the true Sapindaceae. — Ex. Acer, the Maple ; useful timber-treesof northern temperate regions. Sugar is yielded by the vernal sapof Acer saccharinum, and in less quantity by all the species. 802. Ord. TolygalacefE. Herbs or shrubby plants, with simpleentire leaves, destitute of stipules. Flowers perfect, unsymmetrical,and irregular, somewhat papilionaceous in appearance, but of wide-ly different structure. Calyx of five irregular sepals ; the odd onesuperior, the two inner (wings) larger, and usually petaloid. Petalsusually three, inserted on the receptacle, more or less united; theanterior (keel) larger than the rest. Stamens six to eight, combinedin a tube, which is split on the upper side, and united below withthe claws of the petals: anthers innate, mostly one-celled, openingby a pore at the apex. Ovary compound, two-celled, with a singlesuspended ovule in each cell: style curved and often Capsule flattened. Seeds usually with a caruncle. Embryo straight,large, in fleshy, thin albumen. — Ex. Polygala is the principal genusof the order. The plants yield a bitter principle with some acrid FIG. 789. Polygala paucifolia. 790. A flower, enlarged. 791. The calyx displayed. corolla and stamineal tube laid open. 793. The pistil and the free portion of the Vertical section of the ovary. 795. Vertical section of the seed, showing the large embryoand scanty albumen. 412 ILLUSTRATIONS OF THE NATURAL ORDERS. extractive matter. Polygala Senega (Seneca Snakeroot) is themost important medicinal plant of the family. Other species areemployed medicinally in Brazil, Peru, Nepaul, &c.; where, likeour own, they are reputed antidotes to the bites of venomousreptiles. 803. Ord. KrameriacCSB {Rhat
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Keywords: ., bookauthorgra, bookcentury1800, bookdecade1860, booksubjectbotany
