15 
Convolvulus edulis. Sweet potato. 
The tubers are used in many parts of the Southern States as food for cattle, and the 
vines are cured on racks like cowpeas, and used for hay 
Crotalaria juncea. Sunn; Sunn hemp. 
A fiber plant, nonien to southern Asia. It is cultivated in India to feed milch 
cows, and is suited for cultivation in the warmest portions of the United States. 
In rich, friable soil, under favorable elena it often grows to a height of 
10 feet 
Cyperus erythrorhizos. Chestnut-colored sedge. 
An annual sedge with upright stems from 6 inches to 24 feet high, leafy at the base, 
and with four or five leaves clustered about the inflorescence at the top. The 
flower clusters are usually bright chestnut-brown. Widely distributed over 
the prairie region, where it grows in rich, 
moist meadows. The hay contains over 
little value ia native pastures and wet 
us esculentus. M Hognut; 
A almond. (Fig. 12.) 
A perennial sedge, spreading extensively by 
under stes ich 
enormo e tu 
rich, fiddy lo loams it is often cultivated 
as a food for hogs, which are turned into 
the field in autumn to root up the nuts. 
The tubers contain from 17 to 28 per cent 
of oil, 27 to 29 per cent of starch, and 12 
to 21 per cent of gum and sugar. This 
sedge is important for cultivation in 
desert regions. The oil extracted from 
the nuts is said to surpass in excellence 
all other oils used for culinary purposes. 
Cyperus strigosus. Tule; Tula grass. 
A tall sedge with the stems 4 to 6 feet high, 
growing iu marshy places in California 
and Arizona. It is much relished when 
young by all kinds of s 
FIG. 12. —Chufas (Oyperus esculentus). 
Cytisus proliferus albus. "od 
A shrubby perennial legume with silvery gray leaves, native of the Canary Islands, 
which has been recommended for cultivation as a forage plant in hot and dry 
regions. It will perhaps prove of some value in the arid Southwest. Theseeds, 
which are slow in germination, should be boiled four or five minutes, or soaked 
in water for twenty-four hours before planting. The plants should be kept one 
year in the seed bed and then transplanted to rows 6 to 8 feet apart in the field 
where they are to remain, and cultivated until they are 2 or 3 feet high. At the 
to prevent their growing | too high. The leaves and twigs are very nutrition 
both epe iade sheep f g rapidly upon o xut plant should a ive 
the soutl nited States, for w. e 
int 
O 
£ 1111 3 4 x 4 Y 4 *31 
firmly 5" r 
