. Analytical class-book of botany : designed for academies and private students. Plants. 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, som
. Analytical class-book of botany : designed for academies and private students. Plants. 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. Apocynum {Dog-liane, Indian H&m%t\ and Nerium {fiUa/nd&T\ are examples. Order LXXXIX.—^Asclepiadacese. Herbs, or shrubs, usually with a milky juice. Leaves usually opposite, sometimes alternate or verticillate. Flowers generally in umbels, sometimes in racemes or corymbs. Sepals 5, slightly united at base. Corolla regular, consisting of 5 nearly distinct petals. Stamens 5, inserted at the base of the corolla, alternate with it» segments united by their filaments into a tube. Anthers 2-celled. Pollen cohering m masses as many as the cells, or twice 16. Fig. 80. A large and chiefly tropical order, with properties mncli lite the last, but loss active. The various speciea of Asclepiaa, two of which are seen in flgs. 80 and 81, are our
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectplants, bookyear1854
