. Analytical class-book of botany : designed for academies and private students. Plants. OEUEIi LXXXVni. APOCYNACEiE. OEDEK LXXXIX. ASOLEPIADACEJS. 121 united at base. Corolla convolute, sometimes indupUcate in pre- floration, 4—12-parted, regular. Stamens as many as the seg- ments of the coroUa, inserted on the tube, alternately with them. Ovary 1-eelled, free, sometimes apparently 2-oelled, on account of the 2 introflexed placentae. Style 1, or -nfauting. Stigmas usually 2, sometimes 1. as many, which are united in pairs by a connecting thread, and are attached to the glands of the stigma, f
. Analytical class-book of botany : designed for academies and private students. Plants. OEUEIi LXXXVni. APOCYNACEiE. OEDEK LXXXIX. ASOLEPIADACEJS. 121 united at base. Corolla convolute, sometimes indupUcate in pre- floration, 4—12-parted, regular. Stamens as many as the seg- ments of the coroUa, inserted on the tube, alternately with them. Ovary 1-eelled, free, sometimes apparently 2-oelled, on account of the 2 introflexed placentae. Style 1, or -nfauting. Stigmas usually 2, sometimes 1. as many, which are united in pairs by a connecting thread, and are attached to the glands of the stigma, from which they soon hang loose, being released from their cells. Ovaries 2. Styles 2, often very short. Stigmas united into 1 column for both ovaries. Fruit consisting of 2 follicles, 1 sometimes abortive. Seeds usually with a Fig. 29. An order of ^cauafal plants generally pervaded by an Intensely bitter tonlo principle. Gentiana (Oentian), flg. 29, and Menyanthes (Buck- bean), are examples. GROUP VIII. Order LXXXVIII.—Apocynacese. Trees, shrubs, or herbs, with a milky juice. Leaves opposite, or verticillate, rarely alternate, without stipules. Flowers regu- lar. Sepals 6, united, persistent. Corolla 5-lobed, twisted in prefloration. Stamens 6, alternate with the segments of the corolla. Filaments distinct. Anthers 2-eelled, sometimes slightly connected. Ovaries 2, distinct, rarely united, but with 2 united styles or stigmas. Fruit usually a pair of follicles, 1 sometimes abortive. Seeds often with a coma, or tuft of hairs. A chiefly tropical order, distinguished by the active, usually poisonous pro- perties of the jnlce, which usually contains more or less strychnine, ^hico is generally obtained from an East Indian species of Strychnos. Some of the plants that yield the Upas belong to this genus, as also that which furnishes the dreaded "Woorari poison of Guiana. The juice, also, yields caoutchouc, which, in Sumatra, is obtained from the TTrceola clastica. Apoc
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectplants, bookyear1854
