HOFFMANN: FLORA OF BERKSHIRE COUNTY. 351 



frequent on dry banks and sandy shores along the Deerfield River, 

 Florida. 



S. Randii (Porter) Britton. — Ledges on the borders of Guilder 

 Pond (altitude 2000 feet) and Plantin Pond, Mt. Washington. The 

 only known stations in Massachusetts. 



S. rigida L. — Dry limestone hillside, Sheffield. A large colony, 

 scattered over several acres. The only known station in the County 

 and the second in the State. 



S. rugosa Mill.— Borders of fields and thickets; common. Sum- 

 mit of Greylock, 3500 feet, with the variety. 



var. villosa (Pursh) Fernald. — Summit of Greylock, some typical 

 material but often running into the type. 



S. serotina Ait.^ Banks of streams and low ground; common in 

 the valley. 



var. gigantea (Ait.) Gray. — Low ground; frequent. 



S. speciosa Nutt. — Frequent in Sheffield in meadows and on 

 open hillsides (Walters). 



S. squarrosa Muhl. — Rocky banks of streams and dry wooded 

 banks; occasional. Frequent along the Deerfield River, Florida; 

 along a wood road, Great Barrington; clearing in dry woods, Sheffield; 

 near Bash Bish Falls, Mt. Washington. 



S. uliginosa Nutt. — Bogs; frequent in the valley. 



S. ulmifolia Muhl. — Occasional on dry hills, Sheffield. 



SONCHUS. Sow Thistle. 



S. ARVENSis L. — Garden weed, Lenox. 



var. GLABRESCENS Wimmer & Grabowski. — (S. arvensis Man. ed. 7 

 in part.) 



Adventive along railroad track, Leno.x. 



A variety in which the involucres and pedicels are entirely glabrous 

 {vid. Rhodora, 12: 145, 1910). 



S. ASPER (L.) Hill. — Waste places; frequent. 



S. OLERACEUS L. CoMMON Sow Thistle. — Waste places; fre- 

 (juent, but less so than iS. asprr. 



TANACETUM. 'I'ans> 



T. VULOARK L. ("o.M.MON Tansy. — Koadsides and about farm 

 buildings; common. 



