122 Rhodora | [JULY 
Connecticut and Hudson Valleys, as well as its absence in the higher 
mountains of Vermont and New Hampshire, points to the same con- 
clusion. South of New England and New York it spreads, like a great 
many other species, into the northern extensions of the Carolinian. 
In all probability it will be shown to belong to a distribution-group 
which is typified by Lycopodium complanatum var. flabelliforme, 
Populus grandidentata, Quercus coccinea, Q. bicolor, Pyrola americana. 
ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 
REPORTS ON THE FLORA OF THE BOSTON 
DISTRICT,— XVII. 
GRAMINEAE. 
ECHINOCHLOA. 
E. corona (L.) Link. Cotton waste from mill, Malden (F. S. 
Collins, Aug. 19, 1888, specimen in herb. Yale University). 
E. cruscaLLI (L.) Beauv. Wet shores and waste places, common 
throughout. 
E. rRUMENTACEA (Roxb.) Link. Occasionally persistent from 
cultivation, and sometimes sporadic in waste land. 
E. Walteri (Pursh) Nash. Swamps and salt marshes near the 
coast; Swampscott, Medford, Boston, Dorchester, Scituate. 
SETARIA. 
S. GLAUCA (L.) Beauv. Fields and waste places, common through- 
out. 
S. rrauica (L.) Beauv. Introduced in waste places from cultiva- 
tion, frequent. A variable species, the variations of which are now 
being studied. 
S. VERTICILLATA (L.) Beauv. Waste land; Newburyport, Salem, 
Charlestown, Cambridge, Boston, Dorchester. 
S. vrripis (L.) Beauv. Fields and waste places, common through- 
out. 
