1923] Flora of the Boston District, —XXXIX 39 
LYCOPUS. 
L. americanus Muhl. Low ground, common northward, but no 
reports from southern towns, except Cohasset. 
L. EUROPAEUS L. Waste ground, Cambridge, Oct. 6, 1894 et seq. 
Specimens in herb. Gray and Wellesley College. 
| L. rubellus Moench. Low ground, frequent. 
L. sessilifolius Gray. Gravelly shore of Monponsett Pond, Halifax 
(Wm. Boott, Sept. 23, 1870; C. H. Knowlton & W. P. Rich, Sept. 23, 
1906). 
L. uniflorus Michx. Swamps and wet places, common throughout. 
L. virginicus L. Wet shores and swampy places, frequent. 
MARRUBIUM. 
M. vuLGARE L. Waste land, occasional (13 stations). 
MELISSA. 
M. orriciNALIS L. Escaped from cultivation at Georgetown, 
Newbury and Cambridge. 
MENTHA. 
M. arvensis L. Swamps and wet thickets, common, but not re- 
ported from southern towns. 
M. arvensis L., var. canadensis (L.) Briquet. Frequent. 
M. Carpraca Gerarde. Roadsides and moist places at Chelms- 
ford, Lincoln, Weston, Cambridge and West Roxbury. 
M. centiuis L. Low ground; Lexington, Lincoln, Belmont, 
Brookline. 
M. PIPERITA L. Brooks and moist places, common. 
M. spicata L. Moist soil, frequent. 
MONARDA. 
M. CITRIODORA Cerv. Parker River mills, Georgetown (Mrs. C. 
N. S. Horner, no date). Specimen in herb. N. E. Botanical Club. 
M. pipyma L. Introduced by roadsides and in open woods, rare. 
M. risrULOSA L. Rich woods and pastures and old places, occa- 
sional. 
M. risrULOSA, L., var. RUBRA Gray. Concord (E. S. Hoar, 
August, 1879); roadside, Wellesley (F. W. Hunnewell, July 16, 1896). 
M. mollis L. Woods and open places at eight scattered stations. 
