CATALOGUE OE PLANTS. 
141 
^ R. Britannica, L. Great Water Dock. 
, Common in swamps and wet places back of sea beaches; less C,8.S^ 
common in wet ground farther inland,—Long Pond meadows; 
SoDiGSvillG (Hedfield) , ^ 
R. salicifolius, Weinm. White Dock. I 
Sea beaches; frequent, especially on Cranberry Isles and <?, ^5. 4* 
western and northern shores of the Island. Also Northeast ^ ‘ ‘ 
Harbor; Sea Wall (Hand);—Bar Harbor (W. H. Manning), a^ 
, R. verticillatns, L. Swamp Dock. ' 
Rare. Marsh on Northeast Creek; Norwood Cove (Rand). 
(^^C> CEISPUS, L. Curled Dock. 
Common in cultivated and waste ground. Naturalized fromiT.J^ P ^ 
Europe. Cau'^ ^yf, - tU It ' ' 
(£(1 R- OBTUSIFOLIUS, L. Bitter Dock. 
' Waste places; rare. Somesville (Rand); — Bar Harbor (W. 
H. Manning). Adventive from Europe. 
wi K. AcetosellA, L. Field Sorrel. MAT 
A very common weed in fields and waste places. Naturalized 
from Burope. 7/P,, 
POLYGONUM, L. Knotweed. 
P. aviculare, L. Doobweed. X), f/f. 
A common weed about dwellings, by roadeides, etc. Vari- 
able; erect or prostrate. ^ ^ 
P- Rail, B»b. ^ 7ll T' 
Stems long, straggling, prostrate; leaves bending towards X. 
the stem, elliptic-lanceolate, flat; ochre® lanceolate, acute, with ytf • -/» jra 
__ few distinct simple veins, at length torn; nut smooth, shining, ^ 
exceeding the perianth. Resembling P. avioulare in habit, 
but P. maritimum in fruit. Filaments broader at the base. It 
varies with smaller leaves and flowers. Babington, Man. Brit. 
Bot. (4th ed.) 285. Common on sea beaches. This species has 
been often mistaken for P. maritimum, and so reported. So 
far as known, however, P. maritimum is not found within the 
