. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. THE PLAN OF THE ««a, Pistillate flowef of 269, Stamlnate. 270, Dlplocllnium a, etaminate; 6, piatillato. 422. A NEUTRAL FLOWER is a perianth or calyx only, having neither stamens nor pistiJs. Such are t!ie ray-flowers of many of the Conipositte, and of the cymes of Hydrangea, ngh cranberry, etc., which in cultivation may all
. Class-book of botany [microform] : being outlines of the structure, physiology, and classification of plants : with a flora of the United States and Canada. Botany; Botany; Plants; Plants; Botanique; Botanique; Plantes; Botanique. THE PLAN OF THE ««a, Pistillate flowef of 269, Stamlnate. 270, Dlplocllnium a, etaminate; 6, piatillato. 422. A NEUTRAL FLOWER is a perianth or calyx only, having neither stamens nor pistiJs. Such are t!ie ray-flowers of many of the Conipositte, and of the cymes of Hydrangea, ngh cranberry, etc., which in cultivation may all become neutral, as in theanow-balL > « 271 423. Unsymmbtuical 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 affords a good example. 424. Flowers op the cRtrci- PERS. The flowers of mustard, cross, etc, are understood to bo 4-merou8 (V). The sepals are four, petals four, but the stamens 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 tho car- 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 processesâthe rudiments of stn- 4T1 ..Ro^.»; . , .â " mensâproving in an interesting ,,.â¢, a " â ""'."' ' maunt-r tiio natural tendoncv tn the larger flowers noiitra. â wuuoncy lo ..«« /^ A symmetry. V spnng-beauty they are but two; In both caaes too fbw for ^^»etry. In lark'. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, booksubjectpl
