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. Botany; principles and problems. Botany. THE SPERM A TOPH YTA 365 Glumales (Fig. 237).—These are the grasses and the sedges. The small flowers lack a typical calyx and corolla, are protected hy chaffy bracts, and are arranged in clusters. They are wind- pollinated, except for those cases where pollination is affected directly, without external agency. As in the Amentiferae, their simple condition may have come about through reduction. The grass family includes the most important of our crop plants.. Fig. 237.—One of the Glumales. A sedge (Carex), belonging to the family Cyperaceae. Fig. 238.

. Botany; principles and problems. Botany. THE SPERM A TOPH YTA 365 Glumales (Fig. 237).—These are the grasses and the sedges. The small flowers lack a typical calyx and corolla, are protected hy chaffy bracts, and are arranged in clusters. They are wind- pollinated, except for those cases where pollination is affected directly, without external agency. As in the Amentiferae, their simple condition may have come about through reduction. The grass family includes the most important of our crop plants.. Fig. 237.—One of the Glumales. A sedge (Carex), belonging to the family Cyperaceae. Fig. 238. Stock Photo
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. Botany; principles and problems. Botany. THE SPERM A TOPH YTA 365 Glumales (Fig. 237).—These are the grasses and the sedges. The small flowers lack a typical calyx and corolla, are protected hy chaffy bracts, and are arranged in clusters. They are wind- pollinated, except for those cases where pollination is affected directly, without external agency. As in the Amentiferae, their simple condition may have come about through reduction. The grass family includes the most important of our crop plants.. Fig. 237.—One of the Glumales. A sedge (Carex), belonging to the family Cyperaceae. Fig. 238.—One of the Arales. The skunk cabbage (Symplocarpus foetidus), belonging to the family Araceae. Palmales.—The palms are a tropical tree-like family in which the columnar trunk is surmounted by a cluster of large leaves. The small flowers are borne in spikes and in some species are pollinated by wind and in others by insects. The perianth is very simple. Arales (Fig. 238).—These are the aroids, a family of large herl)s particularly abundant in the tropics and represented with us only by the Jack-in-the-pulpit, skunk's cabbage, and a few other species. The leaves are typically large, and, unlike those of most monocotyledons, are netted-veined. The very simple flowers, almost devoid of a perianth, are clustered on a fleshy spadix which is enveloped by a large and often brilliantly colored bract, the spathe.. 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 work.. Sinnott, Edmund Ware, 1888-. New York, McGraw-Hill

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