300 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
H. gentianoides (L.) BSP. Orange Gkass; Pineweed. — 
{Sarothra (icnfiduoidcs 111. Fl. ed. 2.) 
Dry soil; common in Sheffield, oecasioniil el.sewhere in the valley. 
New Marlboro; Union Church, Mt. Washington (altitude 1070 feet). 
H. majus (Gray) Britton. — Wet gronnrl, damp clearings and 
sandy shores; frequent in the valley. 
H. mutilum L. — Roadside ditches and low ground; common. 
II. PEKFOKATUM L. CoMMON St. John's Wort. — Fields and road- 
sides; common. 
H. punctatum Lam. — Moist thickets and damp places; common. 
H. virginicum L. Marsh St. John's Wort. — ( Triadcnum 
virgin irum 111. Fl. ed. 2.) 
Borders of ponds and marshes; common. Altitude 2000 feet, 
Hancock. 
ELATINACEAE. WATERWORT FAMILY. 
ELATINE. Waterwort. 
E. minima (Nutt.) Fisch. & Meyer. — (E. americana Man. ed. 7 
and 111. Fl. ed. 2; vid. Rhodora, 19: 13, 1917.) 
Submersed in shallow water on sandy bottom, Onota Lake, Pitts- 
field ; emersed on muddy border of Goose Pond, Tyringham. 
CLSTACEAE. ROCKROSE FAMILY. 
HELIANTHEMUM. Rockrose. 
{Crocanthemum 111. Fl. ed. 2.) 
H. Bicknellii Fernald. — {H. majus Man. ed. 7; vid. Rhodora, 21: 
36, 1919. C. majus 111. Fl. ed. 2.) 
Dry soil and ledges; occasional in the southern part of the valley. 
On limestone, Monterey; New Marlboro; locally common on the 
sand-plain, Sheffield. 
H. canadense (L.?) Michx. Frostweed. — (C. canadense 111. Fl. 
ed. 2.) • 
Open sandy soil and rocky ledges; occasional in the southern part 
of the valley. On limestone, Monterey; on quartzite, Great Barring- 
ton; locally common on the sand-plain, Sheffield. 
