376 FOREST CULTURE AND 
gen, pl. i., 610), for which, therefore, now the names 
Pp. Amygdalus and P. Persica should be adopted. 
Prunus spinosa, L.—The Sloe or Blackthorn. Wild 
in many parts of Europe. With its flowers it is one 
of the earliest plants to announce the Spring. Its 
tendency to throw out suckers renders the bush less 
adapted for hedges of gardens than of fields, but these 
suckers furnish material for walking - sticks. The 
small fruits can be made intopreserves. P. insititia, 
L., the Bullace, with larger and sometimes yellow 
fruits, extends to North Africa and Middle Asia. Dr. 
Hooker, and other phytographers, consider P. domes- 
tica not specifically distinct from P. spinosa. Of me- 
dicinal value are P. Lauro-Cerasus, L., the evergreen 
Cherry-Laurel from the Orient, and P. Padus, L., the 
deciduous Bird’s cherry, which extends 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 spe- 
cies from Eastern Asia, California, and tropical Amer- 
ica are eligible for improving their fruit through hor- 
ticultural skill. The Sloe and others might, with 
advantage, be naturalized on our forest-streams. 
Psamma arenaria, Roem, and Schult. (P. littoral- 
is, Beauy.; Calamagrostis arenaria, Roth.)—The Mo- 
ram, or Marrem, or Bent Grass. Sand-coasts of Eu- 
rope, 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 Eu- 
rope chiefly, this tall grass and Elymus arenarius are 
employed. Psamma Baltica., R. and 8., from the Bal- 
tic and North Sea, serves the same purpose. Both 
