. The classification of flowering plants. Plants. RANUNCULACEAE 139 sometimes elongated into a pair of lateral stipular lobes as in Thalictrum, the Batrachium section of Ranunculus (Water Crowfoot) and others. The blade is sometimes entire; it is then narrow as in Myosurus and some species of Ranun- culus (as R. Lingua and Flammula) or cordate as in i?. Ficaria and Caltha. Generally, however, the blade is palmately lobed, divided or compomid, rarely pinnately as in Xanthorrhiza and species of Clematis. Special forms are the dissected submerged leaves of the aquatic species of Ranunculus and th
. The classification of flowering plants. Plants. RANUNCULACEAE 139 sometimes elongated into a pair of lateral stipular lobes as in Thalictrum, the Batrachium section of Ranunculus (Water Crowfoot) and others. The blade is sometimes entire; it is then narrow as in Myosurus and some species of Ranun- culus (as R. Lingua and Flammula) or cordate as in i?. Ficaria and Caltha. Generally, however, the blade is palmately lobed, divided or compomid, rarely pinnately as in Xanthorrhiza and species of Clematis. Special forms are the dissected submerged leaves of the aquatic species of Ranunculus and the climbing leaves of Clematis; in the latter the petiole, rachis and some- times even the blade are sensitive to contact. In C. aphylla the whole of the leaf becomes a tendril and the work of carbon-assimilation is done by the green cortex of the stem. The course of the vascular bundles in the stem is in some genera {Actaea, Cimicifuga and Thalictrum) suggestive of the Monoc o t y ledons. The family may be divided into three tribes: Tribe 1. Helleboreae, in which the ovules are arranged in two rows along the ventral suture of the carpels (fig. 65, D) and the fruit is a foUicle or rarely a berry. Tribe 2. Anemoneae, in which a soUtary ovule arises at the base of tlie ventral suture (fig. 65, B, C, F) and the fruit is an achene. Tribe 3. Paeonieae, which is distinguished by the large development of the outer ovule-integument: the ovules are arranged as in Helleboreae and the fruit is a follicle with fleshy walls. Great reduction in the number of ovules occurs in some. Fig. 65. Longitudinal (A, B, C, E, F) and transverse (D) sections of carpels of A, Anemone nemorosa; B, Ranun- culus acris; C, Myosurus minitnus; D, Deljphiniuyn Consolida; E, Callianthe' mum rutifolium; F, TJialictrum minus. All enlarged. (After Prantl.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these il
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1904
