126 Rhodora [Juny 
A. geniculatus L., var. aristulatus Torr. Wet places, from 
Hingham, Dorchester and Natick northward; also on shore of Massa- 
poag Lake, Sharon (S. F. Blake, June 26, 1911). 
A. PRATENSIS L. Fields and meadows, generally introduced and 
abundant. 
SPOROBOLUS. 
S. asper (Michx.) Kunth. Dry sand and gravel; Ipswich, Danvers, 
Medford, Somerville, Boston, Dorchester, Duxbury; Hingham, 
according to T. T. Bouvé, Botany of Hingham, in History of the town 
of Hingham i. pt. 1, 134, 1893. 
S. cryptandrus (Torr.) Gray. Sandy and gravelly soil at numerous 
stations along the coast; also at Lowell, Dracut, and Winter Pond, 
Winchester. 
S. uniflorus (Muhl.) Scribn. & Merr. Meadows and bogs, common 
throughout. 
S. vaginiflorus (Torr.) Wood. Dry sterile soil; common through- 
out. 
AGROSTIS. 
A. alba L. Dry and moist soil; not reported from southeast, but 
common elsewhere. 
A. alba L., var. aristata Gray. Meadows and moist places; Ips- 
wich, Woburn, Melrose, Medford, Carlisle, Newton, Dorchester. 
A. alba L., var. maritima (Lam.) G. F. W. Mey. Moist soil; 
Gloucester, Revere, Saugus, Stoneham, Charlestown, Boston, Hing- 
ham. 
A. alba L., var. vuLGARIS (With.) Thurb. Fields and meadows, 
common throughout. ; 
A. antecedens Bicknell. (Bull. Torr. Bot. Club xxxv. 473-475, 
1908). West Boston dump (C. W. Swan, June 27, 1881, specimen in 
herb. Yale University). Common.on Nantucket and Long Island. 
A. CANINA L. Meadows and damp places; occasional in central 
and northern portion of district. 
A. hyemalis (Walt.) BSP. Moist and dry soil, common through- 
out. 
A. perennans (Walt.) Tuckerm. Woods, common throughout. 
