94 Rhodora [May 
H. umbellata L. Wet shores of ponds from the southern part of 
the district to Chebaeco Pond, Essex; Martin's Pond, North Read- 
ing; and Baddacook Pond, Groton. 
LEVISTICUM. 
L. OFFICINALE (L.) Koch. Persistent in Wenham and Beverly. 
Specimens in herb. Peabody Acad. Sci. 
LIGUSTICUM. 
L. scothicum L. Rocky shores and salt marshes along the coast. 
LILAEOPSIS. 
L. lineata (Michx.) Greene. Salt marsh, Newburyport (E. Moulton, 
no date), specimen in herb. N. E. Botanical Club; Ipswich (J. H. 
Sears, Aug. 24, 1886), specimen in herb. Peabody Acad. Sci. 
OSMORHIZA. 
O. Claytoni (Michx.) Clarke. Rich woods, occasional from West 
Quincy northward. 
O. longistylis Torr.) DC. Rich soils and open woods, apparently 
frequent from Boston north and west; only southern reports are 
Hingham (T. T. Bouvé) and Medfield. 
PASTINACA. 
P. sativa L. Fields, roadsides and waste places, common. 
SANICULA. 
S. gregaria Bicknell. Rich woods, local; Andover, Newbury, Row- 
ley, Magnolia, Revere. 
S. marilandica L. Woods and thickets, rather common. 
SELINUM. 
S. Carvirouia L. Vacant lot, South Boston (C. H. Knowlton & 
W. P. Rich, July 29, 1908). Lot now covered by a nine-story wool 
warehouse. This waif is a native of England, Scandinavia, and 
Russia. 
SIUM. 
S. suave Walt. (S. cicutaefolium Schrank). See Rnoponma xvii. 
137, 1915. Brooks, ponds and swamps, common. 
S. suave Walt., forma Carsonii (Durand) Fassett. See RHODORA 
xxiii. 113, 1921. Frequent in brooks and larger streams. 
