rb Gs 
250 Rhodora (DECEMBER 
C. filiformis L. Bogs and wet places, common. 
C. flava L. Wet places, occasional in northern section. 
C. flava L. var. elatior Schlecht. Georgetown, Lynnfield, 
Malden, Cambridge, Wilmington, Lexington, Chelmsford, Concord 
and Dedham. 
C. flava L., var. rectirostra Gaudin. No reports from northwest 
or southeast; well distributed elsewhere. 
C. foenea Willd. Open woods; reports from scattered stations in 
central and northeastern portions. 
C. foenea Willd., var. perplexa Bailey. Central and northeastern 
portions, occasional. 
C. folliculata L. Swamps and wet woods; very common through- 
out. 
C. glaucodea Tuckerm. Moist soil, south side of Blue Hill, Milton 
(G. G. Kennedy, June 14, 1901; other collections since to June 9, 
1908). 
C. Goodenowii J. Gay. Swamps and wet, sometimes brackish 
places; common throughout, especially near the coast. 
C. gracillima Schwein. Deciduous woods and meadows. Not 
reported south of the Blue Hills, but common elsewhere. 
C. gracilima Schwein., var. humilis Bailey. Revere (H. A. 
Young, June, 1879); Edgeworth, Malden (Wm. Boott, June 30, 1864). 
C. Grarn Carey. Waste grounds, Cambridge (W. Deane, June 27, 
1887). Adventive from further west. 
C. grisea Wahlenb. Readville, Hyde Park (S. 7. Olney, May 29, 
1868). 
C. HELODES Link (C. laevigata Smith). Near Boston, perhaps at 
Tewksbury (B. D. Greene, prior to 1836). Not since collected and 
presumably a casual or adventive plant. See notes by M. L. Fernald, 
Ruopona, XIII, 243-248. 
C. BIRTA L. Groves and fields; Danvers, Melrose, Medford, 
Newton, Ashland; Cambridge (L. H. Bailey, according to Dame & 
Collins, Fl. Middlesex Co., 115, 1888). No reports more recent than 
1887. 
C. hormathodes Fernald. Salt and fresh marshes and other wet 
places; frequent in eastern part of district, especially on the coast. 
C. hormathodes Fernald, var. invisa (W. Boott) Fernald. Origi- 
nally described by William Boott as C. straminea var. invisa, 
“Common on margins of ponds and in ditches in sandy soil, E. 
