278 PROCEEDINGB: BOSTON SOCIETY NATURAL HISTORY. 
RIBES. Currant; Gooseberrt. 
R. americanum Mill. Wild Black Currant. — (R. fioridum 
Man. cd. 7; vid. Rhodora, 11: 46, 1909.) 
Swamps and alluvial thickets; frequent in the valley. 
R. Cynosbati L. Prickly Gooseberry. — {Grossularia Cynos- 
bati 111. Fl. ed. 2.) 
Rocky woods and pastures; common. 
R. hirtellum Michx. Smooth Gooseberry. — (R. oxyacan- 
thoidcs Man. ed. 7; N. A. Fl. 22: pt. 3, 223, 225, 1908. Grossularia 
oxyacanthoides 111. Fl. ed. 2.) 
Swamps and low meadows, occasionally in dry woods and clearings; 
frequent. 
R. lacustre (Pers.) Poir. Swamp Black Currant. — Moist woods 
and swamps; frequent on the upland. 
R. odoratum Wendland. — {R. aureum Man. ed. 7; vid. Rhodora, 
11: 47, 1909.) 
Established on a dry hillside. New Marlboro. 
R. prostratum L'Her. Skunk Currant. — Moist woods; com- 
mon on the upland. 
R. triste Pall., var. albinervium (Michx.) Fernald. — Cold moist 
woods and swamps; frequent in the valley. Not noted on the 
plateau. 
R. vuLGARE Lam. Red Currant. — Frequently escaping to fence- 
rows and thickets. The form with white fruit in woods in Lenox and 
Stockbridge. 
SAXIFRAGA. Saxifrage. 
{Micranthe.-i 111. Fl. ed. 2.) 
S. pennsylvanica L. Swamp Saxifrage. — Swamps, wet mead- 
ows and margins of brooks; common. 
S. virginiensis Michx. Early Saxifrage. — Exposed rocks and 
dry hillsides; common in the valley. 
TIARELLA. False Miterwort. 
T. cordifolia L. False Miterwort. — Woods; common, 
forma parviflora Fernald. — Vid. Rhodora, 19: 132 (1917). 
A large colony on a wooded bank in Becket (Fernald). 
Differs from the typical form in having very narrow short petals 
(2 to 3 mm. long). 
