. The classification of flowering plants. Plants. 226 FLOWERING PLANTS [CH. in the intervening furrows; the guard-cells are generally pro- tected by the larger projecting secondary cells. The arrangement of the leaves in the bud is generally convolute, and the transverse section of the young leaf-shoot is round (fig. 97) ; but in some cases it is condu- plicate and the section more or less elliptical or compressed (fig. 96). The inflorescence, which is indefinite,varies considerably in form ac- cording to the length of the axes and their disti- chous or radial arrange- ment. The main axis (rac
. The classification of flowering plants. Plants. 226 FLOWERING PLANTS [CH. in the intervening furrows; the guard-cells are generally pro- tected by the larger projecting secondary cells. The arrangement of the leaves in the bud is generally convolute, and the transverse section of the young leaf-shoot is round (fig. 97) ; but in some cases it is condu- plicate and the section more or less elliptical or compressed (fig. 96). The inflorescence, which is indefinite,varies considerably in form ac- cording to the length of the axes and their disti- chous or radial arrange- ment. The main axis (rachis) may bear single sessile spikelets, form- ing a spike-like inflor- escence, as in Lolium (Ray-grass), or the spike- lets may terminate the primary branches, form- ing a raceme, or branches of some higher degree forming a panicle. In many Andropogoneae the inflorescence be- comes further complicated by the fact that the spikelets on the ultimate raceme- like branches of the panicle are borne on both primary and secondary branchlets of the raceme. Where a two-ranked arrange- ment prevails the inflorescence may be- come one-sided by the more rapid growth of one side of the main axis, as in Cock's- foot(Dactylis) and Dog's-tail (Cynosurns). The spikelet (figs. 98, 99) consists of an axis (rachilla) bearing two opposite rows of bracts (glumes) following closely. Fig. 100. A spikelet of Festuca pratensis, from which the glumes have been removed to shew the flower in situ, x 12. The two lodicules are in front: the pale behind. From Ward after 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 Rendle, A. B. (Alfred Barton), 1865-1938. Cambridge, University press
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1904
