. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 30 BULLETIN 465, U. S. DEPARTMENT OF AGRICULTURE. Well-developed tubers of the cultivated variety average about three-fourths of an inch in length by three-eighths of an inch in diameter when dried. Tubers from wild plants are usually much smaller and have a greater proportion of fiber. The general appear- ance of chufas and of tubers from a wild sedge is well shown in figure 28. Chufas are known also by the vernacular names earth almonds and ground nuts, and the plant as nut grass and Fig. 28.—Tubers-of
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. 30 BULLETIN 465, U. S. DEPARTMENT OF AGRICULTURE. Well-developed tubers of the cultivated variety average about three-fourths of an inch in length by three-eighths of an inch in diameter when dried. Tubers from wild plants are usually much smaller and have a greater proportion of fiber. The general appear- ance of chufas and of tubers from a wild sedge is well shown in figure 28. Chufas are known also by the vernacular names earth almonds and ground nuts, and the plant as nut grass and Fig. 28.—Tubers-of wild and cultivated chufas. (Natural size.) DISTRIBUTION. The northern boundary of the natural range of the chuf a is marked by the following localities: Southern New Brunswick, southern Ontario, northern Nebraska, New Mexico, Arizona, and the Columbia River valley. The plant seems to be absent from most of the Great Basin and Rocky Mountain regions. From its northern limit the plant ranges southward over the remainder of the continent. (See. 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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