1920] Fernald,—The American Ammophila 71 
the lemma is sharply bidentate at tip and short-mucronate in the 
sinus and the palea is sharp-mucronate; but in the American plant 
the lemma and palea are both blunt, the former scarcely bidentate. 
Other differences of less taxonomic importance are the puberulent 
glumes of the American species contrasted with the more commonly 
glabrous glumes of the European; and, similarly, the puberulent 
axis of the panicle in the American, the axis in the European being 
nearly or quite glabrous. 
That the two are thoroughly distinct species there can be no ques- 
tion; but the American plant seems to have no valid name. In 
1818, Nuttall published the name Phalaris maritima! partly for a 
plant of New Jersey, but he gave absolutely no description and 
stated that his plant was Arundo arenaria L. and that it is an im- 
portant grass of Europe. It would be entirely unwise to take up 
for our grass Nuttall's name which was intended merely as a sub- 
stitute for Arundo arenaria. The Atlantic American plant may be 
called 
AMMOPHILA breviligulata, n. sp., A. arenariam simulans; foliis 
supra serrulato-scabris, ligulis chartaceis vel coriaceis rotundatis 
1-3 mm. longis; paniculis lineari-cylindricis 1.5-4 dm. longis, rhachi 
puberulo; glumis puberulis; lemmate obtuso nec bidentato; palea 
obtusa; caryopsibus 3.2-3.6 mm. longis.—Sand dunes and shores, 
Newfoundland to North Carolina, inland along the St. Lawrence 
system to the Great Lakes. Type: sandy sea-beach, Milford, 
Connecticut, August 27, 1902, C. H. Bissell (Gray Herb.). 
GRAY HERBARIUM. 
1 Nutt. Gen. i. 48 (1818). 
