. Analytical class-book of botany : designed for academies and private students. Plants. 116 OEDEE LXm. DIPSACE^.—OEDEE LXIV. COMPOSITE. Oedee LXIII.—Dipsaceae. Herbs. Leaves opposite, or vertioillate, sessile. Stipules none. Flowers in dense involucrate heads. Calyx-tube adherent to the ovary. Limb somewhat canipanulate, entire, or toothed, sometimes taking the form of a pappus. Corolla tubular, with a 4—5-lobed, slightly irregular limb. Stamens 4, distinct, rarely united in pairs, often unequal, inserted on the corolla. Ovary 1- oelled, containing 1 ovule. Fruit a bony achenium. A small orde
. Analytical class-book of botany : designed for academies and private students. Plants. 116 OEDEE LXm. DIPSACE^.—OEDEE LXIV. COMPOSITE. Oedee LXIII.—Dipsaceae. Herbs. Leaves opposite, or vertioillate, sessile. Stipules none. Flowers in dense involucrate heads. Calyx-tube adherent to the ovary. Limb somewhat canipanulate, entire, or toothed, sometimes taking the form of a pappus. Corolla tubular, with a 4—5-lobed, slightly irregular limb. Stamens 4, distinct, rarely united in pairs, often unequal, inserted on the corolla. Ovary 1- oelled, containing 1 ovule. Fruit a bony achenium. A small order of plants, nativo only of the oUl world. Fuller's Teasel {Dip- saous Fiillonuin\ and another species, D. sylvestris, which is naturalized in various districts of the United States, are examples. GROUP II. Oedee LXIV.—Compositse. Herbs, or shrubs. Leaves alternate, or opposite, without stipules. Flowers arranged in dense heads, on a common recep- tacle, and surrounded by an involucre of bracts; the separate flowers often with chaffy bracteoles somewhat like a calyx. Calyx-tube adherent to the ovary; limb obsolete, or present, and. Eig. IT. assuming the various forms of bristles, hairs, scales, and is termed pappus. Corolla ligulate, or tubular, often .5-cleft, and rarely wanting. Stamens 5, their anthers united in a tube. Ovary 1- celled, 1-ovuled. Style 2-cleft. Fruit a dry indehiseent ache- nium crowned with the pappus. This order is divided into 3 suborders, TubuliflorsE, Liguliflorse, and Labiatiflorffl, only the 2 first of which are represented in the JSTorthern States. In Tubu- liflora! either all the flowers, or the central flowers, are tubular. This structure is exemplified in the Thistle, one species of which {Olrsium lanceolatwn), is seen in fig. 17, where the flowers are all tubular. In the same figure is shown one of the separate flowers, -or florets, with its pappus surrounding the tubular 5-cleft corolla, that incloses the tube of 5 united anthers, throug
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Keywords: ., bookcentury1800, bookdecade1850, booksubjectplants, bookyear1854
