. The families of flowering plants. Plants; Phanerogams. M FAMILIES OF FLOWERING Fig. 19.—Barnyard grass {Panicum Crus-gaUi). (After Britton and Brown, 111. m. Northern U. S.) gions to the lofty arborescent bamboos of the tropics. The inflores- cence consists of what are technically called spikelets, each of which is made up of small imbricated chaffy scales. Some of these scales are empty; others enclose the sta- mens, usually three in number, and the pistil; and each of these flower- bearing scales usually encloses an additional, very slender scale known as the palet. Every individu
. The families of flowering plants. Plants; Phanerogams. M FAMILIES OF FLOWERING Fig. 19.—Barnyard grass {Panicum Crus-gaUi). (After Britton and Brown, 111. m. Northern U. S.) gions to the lofty arborescent bamboos of the tropics. The inflores- cence consists of what are technically called spikelets, each of which is made up of small imbricated chaffy scales. Some of these scales are empty; others enclose the sta- mens, usually three in number, and the pistil; and each of these flower- bearing scales usually encloses an additional, very slender scale known as the palet. Every individual floret thus conpists of the essential organs of reproduction, surrounded by two protecting scales; one or more of the florets are borne together on a slender axis, forming a spikelet; while the innumerable spikelets may be clustered together in a spike, as in timothy, or borne in an open branching panicle, as in red top, KjCntucky blue grass, and many other species. The leaves of these plants are so well known that the term grass-like is common as a standard of comparison. At the junc- tion of leaf and stem, where the base of the leaf usually forms a complete- ly enwrapping sheath, will be noticed in most cases a peculiar membranous ring or protuberance; this is called the ligule, a name derived from its suggestion of a little thong or strap, and it is an indisputable proof, if present, that we have a grass and not a sedge or rush before us. The grass stem or culm is hollow, ex- cept at the joints. Little need be said of the value of grasses for forage and pastur- age; indeed they furnish nine-tenths of the subsistence of domesticated pig. 20.—Forked Beard-grass {Andro- herbivorous animals, and with the ZZ!mt%^Z'v"'^r "'. 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 Pollard, Charles Lo
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectplants, bookyear1900
