278 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 



RIBES. Currant; Gooseberry. 



R. americanum Mill. Wild Black Currant. — (R. floridum 

 Man. ed. 7; vid. Rhodora, 11: 46, 1909.) 



Swamps and alluvial thickets ; frequent in the valley. 



R. Cynosbati L. Prickly Gooseberry. — {Grossularia Cynos- 

 hati 111. Fl. ed. 2.) 



Rocky woods and pastures; common. 



R. hirtellum Michx. Smooth Gooseberry. — (R. oxyacan- 

 thoides 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. S.vxifrage. 

 {Micranthes 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 Miterw^ort. — 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). 



