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from Europe to North Africa and "West Asia. These and 

 most other species contain in their foliage and in some other 

 parts Amygdalin. Perhaps some of the species from 

 Eastern Asia, California and tropical America are eligible 

 for improving their fruit through horticultural skill. The 

 Sloe and others might with advantage be naturalized on 

 our forest streams. 



Psamma arenaria, Eoem. and Schult. 



(P. littoralis, Beauv. Galamagrostis arenaria, Roth.) 



The Moram or Marrem or Bent Grass. Sand-coasts of 

 Europe, North Africa and Middle North America. One of the 

 most important of reedy grasses, with long creeping roots, 

 for binding the moving drift sands on the sea shore, for the 

 consolidation of which in Europe chiefly this tall grass and 

 Elymus arenarius are employed Psamma Baltica, E. 

 and S., from the Baltic and North Sea, serves the same pur- 

 pose. Both can also be used in the manner of Sparta for 

 paper material. 



Psidium Araca, Raddi. 



Erom West India and Guyana to Peru and Southern Brazil, 

 where it is found in dry high-lying places. This is one of 

 the edible Guavas, recorded already by Piso and Marcgrav. 

 The greenish-yellow berry is of exquisite taste. 



Psidium arboreum, Vellozo. 



Brazil; province Rio de Janeiro. This Guava-fruit mea- 

 sures about one inch, and is of excellent flavor. 



Psidium Cattleyanum, Sabine.* 



The Purple Guava. Brazil and Uruguay. One of the 

 hardiest of the Guava-bushes, attaining finally a height of 

 20 feet. The purple berries are seldom above an inch long, 

 but of delicious flavor and taste, resembling thus far 

 strawberries. P. buxifolium, Nutt., of Florida, seems nearly 

 related to this species. 



Psidium cinereum, Martius. 



Brazil ; provinces Minas Geraes and Sao Paulo. Also 

 yielding an edible fruit. 



