. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. u,. ^'A p\ '•J 86 THE PLAN OF THE 271 268, Pistillate flower of Balm-of-Gilead. 269, Staminate. 270, Diploclinium Evansianuni. «, .'^taininate; b, pistillate. 422. A NEUTRAL FLOWER 18 a perianth or calyx only, having neitlier stamens nor pistils. Such are the ray-flowers of many of the Compositae, and of the cymes of Hydrangea, high cranberry, etc.,
. Class-book of botany [microform] : being outlines of the structures, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. u,. ^'A p\ '•J 86 THE PLAN OF THE 271 268, Pistillate flower of Balm-of-Gilead. 269, Staminate. 270, Diploclinium Evansianuni. «, .'^taininate; b, pistillate. 422. A NEUTRAL FLOWER 18 a perianth or calyx only, having neitlier stamens nor pistils. Such are the ray-flowers of many of the Compositae, and of the cymes of Hydrangea, high cranberry, etc., which in cultivation may all become neutral, as in the snow-balL 423. Unsymmetrical flow- ers. The term symmetry, as used in botany, refers to number only. A flower becomes unsymmetrical by the partial development of any set or circle in respect to the num- ber of its organs. The mustard family aflbrds a good example. 424. Flowers of the cruci- FERS. The flowers of mustard, cress, etc, are understood to bo 4-merous (V). The sepals are four, petals four, but the stamins are six and the styles but two. The stamens are arranged in two circles, having two of those in the outer circle suppressed or reduced to mere glands. Two of the cur- pels are also suppressed. (256.) 425. In the mint family and the figworts one or three of the stamens is generally abortive, Here, while the flowers are V, the stamens are four in some spe- cies and only two in others. The missing stamens, however, often appear in the guise of slender processes—the rudiments of sta- mens—proving in an interesting manner tne natural tendency to Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wood, Alphonso, 1810-1881. New York; Cincinnati : American Book Co.
Size: 2554px × 978px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade, booksubjectbotany, booksubjectplants
