166 Rhodora [AUGUST 
TRIBONEMA BOMBYCINA TENUIS Hazen. Occasional in pools in 
the Cañon Creek valley and on Prairie Mountain. 
FLAGELLATAE 
Hyprurvus Foetipus (Villm.) Kirchn Occasionally covering 
rocks in rivulets entering Cañon Creek and Grizzly Creek to the exclu- 
sion of other vegetation. 
RHODOPHYCEAE 
LEMANEA FUCINA Bory. A rock in a large tributary which entered 
the Spillamacheen from the east across Prairie Mountain from 
Glacier Circle was covered below the water level with a fine fruiting 
growth of this Lemanea. 
UNIVERSITY OF PENNSYLVANIA. 
REPORTS ON THE FLORA OF THE BOSTON 
DISTRICT, —XLIX. 
COMPOSITAE. 
SONCHUS. 
S. ARVENSIS L. Waste places; frequent, especially near the sea. 
S. ARVENSIS L., var. GLABRESCENS Wimm. & Grab. One plant in 
garden for one year, Hingham (C. H. Knowlton, Aug. 18, 1918). 
Specimen in herb. C. H. Knowlton. Adventive from Europe. 
S. ASPER (L.) Hill. Rich moist soil in waste places, frequent. 
S. OLERACEUS L. Waste ground, rather common. 
S. OLERACEUS L., forma LAcEkRus (Willd.) G. Beck. Dumping 
ground near Mt. Auburn, Cambridge (B. L. Robinson, Aug. 22, 1897). 
Specimens in herb. Gray and N. E. Botanical Club. A European waif. 
TANACETUM. 
T. VULGARE L. Waste places, common; especially abundant in 
Boston. 
T. VULGARE L., var. cRisPUM DC. Persistent around old places, 
and spreading to waste ground, rare. 
TARAXACUM. 
See Earl Edward Sherff, Bot. Gaz. lxx. 329-359, 1920. 
