. Five important wild-duck foods . s from Florida, Illinois, Minnesota, and species of ducks now known to feed on chufas are the wood duck,mottled duck, mallard, and canvasback. DESCRIPTION OF PLANT. The chufa (Cyperus esculentus) (fig. 8) belongs to the group ofplants known as sedges. These are grass-like and usually classed withthe grasses by nonbotanists. Many of the sedges, however, includingthe chufa, have triangular, not round, stalks. The members of thegenus Cyperus have a group of leaves at the base from which risesthe stalk bearing the flowers and seeds. In the chufa th
. Five important wild-duck foods . s from Florida, Illinois, Minnesota, and species of ducks now known to feed on chufas are the wood duck,mottled duck, mallard, and canvasback. DESCRIPTION OF PLANT. The chufa (Cyperus esculentus) (fig. 8) belongs to the group ofplants known as sedges. These are grass-like and usually classed withthe grasses by nonbotanists. Many of the sedges, however, includingthe chufa, have triangular, not round, stalks. The members of thegenus Cyperus have a group of leaves at the base from which risesthe stalk bearing the flowers and seeds. In the chufa these stalksare from 1 to 3 feet high. Several flower clusters on peduncles of FIVE IMPORTANT WILD-DUCK FOODS. \) varying length rise from the top of the stalk. From the same pointthree rather long grass-like leaves project below the fruiting members of the genus have a very similar appearanceand it is not expected that nonbotanical observers can distinguishthem. This is unnecessary, however, as tubers of the chufa for. Fig. 8.—Seed-bearing and immature plants of the chufa. (Much reduced.) propagation may be obtained from most seedsmen. The tubersof the chufa are formed at the ends of scale-covered plant is extremely prolific, cultivated forms usually producing100 tubers to the plant, and instances are known in which more than600 tubers were produced in one season from one tuber planted inthe spring. 19610°—Bull. 58- 14 2 10 BULLETIN 58, U. S. DEPARTMENT OF AGRICULTURE. Well-developed tubers of the cultivated variety average aboutthree-fourths of an inch in length by three-eighths of an inch indiameter when dried. Tubers from wild plants are usually muchsmaller and have a greater proportion of fiber. The general appear-ance of chufas and of tubers from a wild sedge are well shown byfigure 9. Chufas are known also by the vernacular names, earth almondsand ground nuts, and the plant as nut grass and cache-cache. * p % 0 9* * 0 0* 0 Fig. 9.—Tubers
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