262 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
SCLERANTHUS. Knawel. 
S. ANNUUS L. Knawkl. — ■ Rocky flood-plain of Green River, Egre- 
mont; locally common along sandy roadsides in the southern part of 
Sheffield. 
AIZOACEAE. 
MOLLUGO. I.VDiAN Chickweed. 
M. VERTiciLLATA L. Carpet Weed. — Cultivated ground, road- 
sides, sandy shores; common. 
CARYOPHYLLACEAE. PINK FAMILY. 
AGROSTEMMA. Corn Cockle. 
A. GiTHAGo L. Corn Cockle. — Rarely adventive in waste land 
and grain fields. Lanesboro (Churchill) ; Stockbridge. 
ARENARIA. Sandwort. 
{Moehringia 111. Fl. ed. 2 in part.) 
A. lateriflora L., var. typica (Regel) St. John. — {A. lateriflora 
Man. ed. 7 in part, vid. Rhodora, 19: 260, 1917; Moehringia lateri- 
flora 111. Fl. ed. 2.) 
Occasional in the southern part of the valley. Dry bank near the 
Housatonic River, Stockbridge; moist soil near the Housatonic River, 
Sheffield (Walters) ; moist place on old road, Mt. Washington (Weath- 
erby). 
Leaves puberulent on the margins and on the midribs beneath, or 
occasionally puberulent throughout. 
A. macrophylla Hook. — {Moehringia macrophylla 111. Fl. ed. 2.) 
On serpentine ledges in dry hypnum, Florida (Fernald). 
A. SERPYLLiFOLiA L. — Dry soil on hillsides, sand-plains and along 
railroad tracks; locally common in the southern part of the valley. 
A. stricta Michx. — Exposed limestone rocks, Sheffield (Walters); 
limestone outcrops. New Marlboro. 
CERASTIUM. Mouse-ear CmcKWEED. 
C. ARVENSE L. Field Mouse-ear Chickweed. — On lawns; 
occasional. Pittsfield (Lincoln) ; dry field. West Stockbridge (Evans, 
Fernald and Knowlton); Great Barrington (Walters). 
Indigenous on serpentine ledges in Florida (Fernald and Long). 
