. Introduction to botany. Botany. 22 KEY AND FLORA. Scapes erect, becoming longer than the leaves, cylindrical, spongy. Flowers bisexual, in paniculate, 3-bracted umbels, small, white or pink. Stamens 6-9. Ovaries numerous in one or more whorls on a flat recepta- cle. Fruit 1-seeded akenes which are ribbed on the back and sides.* 1. A. Plantago-aquatica L. Water Plantain. Peren- nial ; root fibrous. Leaves ovate or somewhat cordate, 5-7-nerved when erect, float- ing leaves narrower and sometimes linear. Scapes usually single; panicle 1-2 ft. long ; flowering branches whorled, subtended by thre
. Introduction to botany. Botany. 22 KEY AND FLORA. Scapes erect, becoming longer than the leaves, cylindrical, spongy. Flowers bisexual, in paniculate, 3-bracted umbels, small, white or pink. Stamens 6-9. Ovaries numerous in one or more whorls on a flat recepta- cle. Fruit 1-seeded akenes which are ribbed on the back and sides.* 1. A. Plantago-aquatica L. Water Plantain. Peren- nial ; root fibrous. Leaves ovate or somewhat cordate, 5-7-nerved when erect, float- ing leaves narrower and sometimes linear. Scapes usually single; panicle 1-2 ft. long ; flowering branches whorled, subtended by three narrow, striate bracts; pedi- cels slender, elongated. Ova- ries in a single whorl; base of the short style per- sistent, forming a beak at the inner angle of the akene. Akenes obliquely obovate, 2-3-keeled on the back. Common in ponds and muddy places.* Fig. 2. Diagrammatic representation of a several-flowered grass spikelet g, g', the glumes; p, p', the palets; I, lod- icules; /, a flower. The axis is much lengthened, to sep- arate the flowers. (After Sohimper) Pig. 3. Spike-like panicle of ver- nal grass (An- thoxanthum) a, mature anthers. (Slightly enlarged) 4. ;. Family Grass Mostly herbs, with usu- ally hollow stems, closed and enlarged at the nodes. Leaves alternate, in two ranks, with sheathing bases, which are split open on the side opposite the blade. Flowers nearly or quite destitute of floral envelopes, solitary, and borne in the axils of scaly bracts, which are arranged in two ranks. 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 Bergen, Joseph Y. (Joseph Young), 1851-1917; Caldwell, Otis William, 1869- joint author. Boston, New York, [etc. ] Ginn and company
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