1922] Flora of the Boston District, —XXVV. 93 
CICUTA. 
C. bulbifera L. Swamps, common throughout. 
C. maculata L. Meadows and swamps;abundantthroughout. Our 
most poisonous native plant. 
COELOPLEURUM. 
C. lucidum (L.) Fernald. (C. actaeifolium (Michx.) Coult. & Rose; 
see Ruopora xxi. 144-147, 1919.) Brackish marshes and rocky 
seashore; occasional along the coast, Amesbury to Scituate. 
C. lucidum (L.) Fernald, forma frondosum Fernald. (Vide supra.) 
Beverly Bay (Charles Pickering, August, 1847); Swampscott (C. W. 
Swan, Aug. 5, 1886). 
CONIOSELINUM. 
C. chinense (L.) BSP. Along brookside, May St., Needham (T. O. 
Fuller, Sept. 27, 1884, to Aug. 7, 1892; J. R. Churchill, Aug. 31, 1901). 
CONIUM. 
C. MacULATUM L. Roadsides and waste places, occasional. 
CORIANDRUM. 
C. sartvum L. A few plants in strand at Crescent Beach, Revere 
(M. L. Fernald, Oct. 20, 1912). 
CRYPTOTAENIA. 
C. canadensis (L.) DC. Woods and thickets; Andover, Boxford, 
Beverly (John A. Lowell, June, 1847), Oak Island, Revere, Belmont, 
Waltham. 
DAUCUS. 
D. Carota L. Fields and waste places, very common throughout. 
ERYNGIUM. 
E. AMETHYSTINUM L. Escaped in waste ground, Nahant (J. R. 
Churchill, July 29, 1899, Sept. 5, 1902). A European species. 
HERACLEUM. 
H. lanatum Michx. Swamps and low thickets, mostly near the 
coast. 
H. SeHoNpvrLiUM L. Waste places at South Boston and the Fenway 
(corner of Brookline Ave. and Audubon Road). 
HYDROCOTYLE. 
H. americana L. Moist soil, common. 
