63. POLYGONACE. 299 
935 (934). Polygonum Persicaria, Linn. 
Provinces all. Native. No authority for Sutherland. 
Lat. 50—61. Cornwall, Wight, Kent. — Orkney, Shetland. 
Zones 123. Tyne to 400 yards. Lakes to 400 yards. 
Census 18 87 93. Ireland 12. British type of distribution 
Europe all. Northward to Finmark; N. J. Andersson. 
Russia 654321. Himalaya. Siberia. Davuria. 
Algeria. Canaries. Azores; Drouet flo. — Far. Icel. (Am.) 
936. Polygonum mite, Schrank. 
Provinces ? 234-[67 9]10-?-. Native. 
Lat. 50—55. Dorset! Surrey! — Hunts! Northton! York. 
Zones 1 2. Low grounds. “ Cornwall” to “ Cumberland”? 
Census 4 8 12. Ireland 0. Germanic type of distribution. 
Europe - ita - aus ger fra eha net den got. 
Russia 6--3. N.B. This is nearly allied to Persicaria, but has 
been strangely confused with the less similar P. minus. 
937. Polygonum Hydropiper, Linn. 
Provinces 1 to 16 - [18]. Native. 
Lat. 50—58 or 61. Cornwall, Wight, Kent. — Skye, Shetland ? 
Zones 1238. Lakes to 450 yards. Humber to 250 yards. 
Census 16 82 86. Ireland 12. British type of distribution. 
Europe all, except Lapland and Finmark. 
Russia 6-43.21. India. Siberia. Davuria. 
Algeria. Madeira. — Faroe. Iceland. America. 
938. Polygonum minus, Huds. 
Provinces 1234567891011-18- [15]. Native. 
Lat. 58—55. Wight, Sussex, Kent. — Kirkcudbright, Durham. 
Zones 1 2. Humber to 150 yards. Somerset; Dr. Southby. 
Census 12 19 33. Ireland 10. English type of distribution. 
Europe spa. ita - aus ger fra cha net den got nor swe. 
Russia 6-43. India. Siberia. “China.” 
N.B. Clearly distinct from P. mite, see mem: under 936. 
