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CATALOGUE OF PLANTS. 67 
P. Muhlenbergii, Watson. 
Bogs and wet places. B*, rare; valley, E. of Shadow 
Point; pool near Great Dome. 
P. Careyi, Olney. 
Swamps and shady wet places. B,rare; near Balster Brook. 
P. Persicaria, L. Lapy’s THums. 
Nat. from Eu. in cult. ground and damp waste places. B* 
and M, common. 
P. hydropiperoides, Michx. M1itp Water PEPPER. 
Shallow water and wet places. B*, pool, E. of Great Dome, 
ete.: — M*, frequent in ditches and low grounds: —BB*, 
border of pond. 
P. Hydropiper, L. Common SMARTWEED. WATER PEPPER. 
Wet places. B*, frequent; pool, KE. of Great Dome; by 
Cragfoot Spring, etc.: — M* and S, common. 
P. acre, HBK. Water SMARTWEED. 
Wet places. #&*, occasional; pool in Pine Tree Brook ; Old 
Furnace Brook; by Cragfoot Spring, etc. : — M, by Winches- 
ter Reservoirs : — B B*, occurs. 
P. Virginianum, L. 
Damp woods. S, rare. 
P. arifolium, L. HaLserp-LEAVED TEAR-THUMB. 
Bogs in shade. JB, occasional: — M* and S, frequent. 
P. sagittatum, L. ARRoOw-LEAVED TEAR-THUMB. 
Low ground. B* and S, common :—WM, common in wooded 
bogs and swamps. 
P. Convotvutus, L. Brack BInpWEED. 
Nat. from Eu. in cult. and waste grounds. JZ, occasional: 
—M, borders of cult. ground. 
P. dumetorum, L., var. scandens, Gray. Cirmpine Fatse 
BUCK WHEAT. 
‘Moist woods. B*, occasional; near Cragfoot Spring, etc. - 
—WM, occasional; by S. Reservoir, etc. 
