35 
Ornithopus sativus. Serradella. (Fig. 34.) 
An annual legume, native of southern Europe and northern Africa, which is valu- 
able as a fodder plant on moist and sandy sterile soils. At the Pennsylvania 
| Station the yield from two cuttings was 114 tons of green forage. It does not 
require lime, and is often used as a green manure to bring up the value of sterile 
fields. The forage, which is much relished by cattle and sheep, has about the 
same feeding value as red clover 
Petalostemon. Prairie clover; White prairie clover; Purple prairie clover; Leafy 
| prairie clover. (Fig. 
1 
| 
A number of species of prairie clover are common throughout the prairie region and 
westward into the Rocky Mountains. They are erect perennial legumes, with 
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#4) WA 
v 
rs 
NS 
y. 
Y AP 
VA 
YW, AX SS 
LY 
alive 
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| 
4 * 
FIG. 34. gprs (Ornithopus Fig. 35.— Prairie clover (Petalostemon 
tivus). candidus). 
heads of white or purple flowers and finely divided compound leaves. They 
contribute a considerable amount of forage on the prairie pastures, and should 
be given a trial in cultivation. 
Phaseolus diversifolius. Creeping kidney bean. 
An annual, with prostrate spreading leafy stems, common on the prairies and cedar 
glades of the Southern States. The foliage is eaten by cattle and sheep. 
Phaseolus helvolus. Long-stalked kidney bean. 
A perennial bean with slender diffuse stems. A single plant makes a large quantity 
of herbage. 
Common in the Southern States, where, in certain localities, it pro- 
duces a large amount of forage. 
