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Algaroba-pods for cattle-fodder, and utilized even in some 

 instances for human food. As allied plants, besides the 

 following, may be mentioned : P. horrida, Humb., occurring 

 from the base of the Andes to the sand-shores of Peru ; 

 P. juliflora, Cand., growing from Mexico and West India to 

 Ecuador ; P. Siliquastrum, Cand., extending from the 

 Chilian Andes apparently into the Argentine Province 

 Catamarka. A short communication on the American 

 Algaroba-trees was presented to our Parliament by the 

 writer in 1871. 



Prosopis glandulosa, Torrey. 



Colorado, Arkansas, Texas. The pods of this th orny ever 

 green shrub or tree are also succulent. It exudes a gum, 

 not unlike Gum Arabic, and this is obtained so copiously, 

 that children could earn from 2 dollars to 3 dollars a day in 

 Texas while gathering it, latterly about 10,000 lbs. being 

 bought by druggists there. The tree attains a height of 

 30 feet, and its wood is excessively hard. The pods of 

 several species are rich in tannin. 



Prosopis pubescens, Bentham. 



Texas, California, New Mexico. Likely available for hedges, 

 with other species of other countries. 



Prosopis spicifera, L. 



India. A thorny tree, also with edible pods, possibly hardy 

 here. 



Prosopis Stephaniana, Kunth. 



Syria and Persia. A shrubby species for hedge-growth. 



Primus Americana, Marshall. (P. nigra, Aiton.) 



Canada, Eastern United States of America. A thorny tree, 

 furnishing the Yellow and Red Plum of North America. 

 The fruit is roundish and rather small, but of pleasant taste. 



Prunus Chisasa, Michaux. 



North America, west of the Missisippi. On the prairies it 

 is only 3 to 4 feet high. Fruit spherical, red, rather small, 

 with a tender usually agreeable pulp. Other species with 

 edible fruit occur in North America, such as P. pumila, L., 



