. Elementary botany. Botany. CHAPTER XXIX. QUILLWORTS (ISOETES). 397. The quillworts, as they are popularly called, are very curious plants. They grow in wet marshy places. They receive their name from the supposed resemblance of the leaf to a quill. Fig. 248 represents one of these , quillworts (Isoetes engelmannii). The leaves are the prominent part of the plant, and they are about all that can be seen except the roots, without removing the leaves. Each leaf, it will be seen, is long and needle-like, ex- cept the basal part, which is expanded, not very unlike, in out- line, a scale of an oni
. Elementary botany. Botany. CHAPTER XXIX. QUILLWORTS (ISOETES). 397. The quillworts, as they are popularly called, are very curious plants. They grow in wet marshy places. They receive their name from the supposed resemblance of the leaf to a quill. Fig. 248 represents one of these , quillworts (Isoetes engelmannii). The leaves are the prominent part of the plant, and they are about all that can be seen except the roots, without removing the leaves. Each leaf, it will be seen, is long and needle-like, ex- cept the basal part, which is expanded, not very unlike, in out- line, a scale of an onion. These expanded basal portions of the leaves closely overlap each other, and the very short stem is com- pletely covered at all times. Fig. 250 is from a longitudinal sec- tion of a quillwort. It shows the form of the leaves from this view (side view), and also the Isoetes, mature plant, sporophyte stage, general outline of the short Stem, which is triangular. The stem is therefore a very short object. 196. 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 Atkinson, George Francis, 1854-1918. New York, H. Holt
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