HOFFMANN: FLORA OF BERKSHIRE COUNTY. 265 



var. isophylla Fernald. — (S. horealis Man. ed. 7 in part; vid. 

 Rhodora, 16: 150, 1914.) 



Wet places; frequent, especially on the plateau. 



Upper leaves long and but slightly reduced, herbaceous throughout; 

 flowers few, axillary and terminal. 



S. GRAMiNEA L. — Grassy roadsides and thickets; frequent, espe- 

 cially on the plateau. 



S. longifolia Muhl. — Meadows and swampy woods; occasional. 

 Florida; Sheffield (Walters). 



S. MEDIA (L.) Cyril). Common Chickweed. — Cultivated ground; 

 common. 



PORTULACACEAE. PURSLANE FAMILY. 

 CLAYTONIA. Spring Beauty. 



C. caroliniana Michx. Spring Beauty. — Rich or swampy woods; 

 frequent. Abundant on the upper slopes of Greylock, and on the 

 plateau. Altitude 2300 feet, Florida. 



C. virginiana L. Spring Beauty.-^ One station in Sheffield 

 (Walters). 



PORTULACA. Purslane; Pusley. 



P. OLERACEA L. CoMMON PuRSLANE; PusLEY. — Cultivated and 

 waste ground; common. 



CERATOPHYLLACEAE. HORNWORT FAMILY. 

 CERATOPHYLLUM. Hornwort. 

 C. demersum L. Hor.vwokt. — Ponds and slow streams; com- 



NYMPHAEACEAE. water LILY FAMILY. 

 BRASENIA. Water Shield. 



B. Schreberi Gmol. W.\ter Shield. — Ponds; frequent. 



CASTALIA. Water Lily. 



C. odorata (Ait.) Woodx illt- & Wood. White Watkk Lily; 

 White 1'omj Lily. — Ponds and slow streams; common. 



