262 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



SCLERANTHUS. Knawel. 



S. ANNUUS L. Knawel. — Rocky flood-plain of Green River, Egre- 

 mont; locally common along sandy roadsides in the southern part of 

 Sheffield. 



AIZOACEAE. 



MOLLUGO. Indian CmcKWEED. 



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 III. 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 m. Fl. ed. 2.) 



Occasional in the southern part of the valley. Dry bank neai 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 Chickweed. 



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). 



