r ita ES 
39 
exudes copiously from the trunk and ¡pogo The wood is hard, n and 
— , And takes a high polish. It is the most common woody plant of the 
me bof the Southwest, and because of its many uses i gly valuable 
species. 
Prosopis pubescens. Tornillo; Screw bean. 
A shrub or small tree similar to the mesquite, abundant along the Rio Grande and 
its tributaries. The pods are eaten by cattle. ey are also used as food by the 
Mexicans and Indians. It may be distinguished from P. juliflora by its thick, 
spirally twisted pods, those o 
the former being straight or 
curved. 
Psoralea esculenta. Pomm 
blanche; imez de jetties ; 
Prairie turn 
A perennial ler citi common 
throughout the prairie region. 
* produces edible tubers. 
Formerly used as food by the 
Indians and the voyageurs, and 
probably of some value 
for hogs. 
glandulosa. Jesuit'stea. 
A trifoliate, bushy, leguminous 
shrub, native of Chile, which 
there grows in gullies and water 
courses which are dry in sum- 
mer, and is eaten by cattle and 
horses. It is being introduced 
into similar regions in Califor- 
nia as a forage plant. 
Psoralea melilotoides. 
This and other species occur on dr: / 
pasture lands in the Southern Fic. 40.—Mexican clover (Richardsonia scabra). 
a 
for all kinds of stock. There are about a dozen species native to the prairie 
region, which add value to both pasturage and hay. Because of their tough, 
slender roots they are commonly known as “‘shoe strings.” 
Richardsonia scabra. Mexican clover; Spanish clover; Ipecac weed; Florida 
clover; Water parsley; Bellfountain; Poor toe; Pigeon weed. (Fig. 40.) 
An annual weed, native of Central America and Mexico, which has been introduced 
into the Southern States and has now spread along the Gulf westward into Texas. 
tj is a succulent, dodi > ee plant, chiefly valued as a renovator of sandy 
fields on the coast. not a true clover, but belongs to the Rubiace:w, 
the family in which nie is aeii. Reports concerning it are conflicting. 
According tosome it is a valuable pasture plant, while others affirm that neither 
sis shows that the hay contains nearly as much nutriment as red clover. It is 
never ebene * appears as a weed after corn and cotton have been laid 8 
In Florida it is considered an excellent plant to grow in orange groves 
mulch, and to 2 idi for green manure. 
