82. LEMNACE.E. 347 
1138. Lemna minor, Linn. 
Provinces all. Native. 
Lat. 50—60. Cornwall, Wight, Kent. — Skye, Orkney. 
Zones 123. Lakes, Humber, in each to 300 yards. 
Census 18 34 86. Ireland 12. British type of distribution. 
Europe all, except Lapland and Finmark. 
Russia 65 432. India. Siberia. 
Algeria. Canaries. Azores. — America. 
1139. Lemna gibba, Linn. 
Provinces 128456-8910---1415. Native. 
Lat. 50—57. Devon, Wight, Kent. — Fife; B. Syme, 1840. 
Zones 1 2. Low grounds. Perhaps often overlooked. 
Census 11 20 387. Ireland 8. English-germanic type. 
Europe spa ita - aus ger fra cha net den got nor swe. 
Russia 6 - 4 8 2. Siberia. 
Algeria. Canaries. — America, rarely. 
1140. Lemna polyrhiza, Linn. 
Provinces 12345678910--13814. Native. 
Lat. 50—56. Devon, Wight, Kent. — Lanark, Edinburgh. 
Zones 1 2, Low grounds. 
Census 12 24 46. Treland 3. English type of distribution. 
Europe - ita - aus ger fra cha net den got nor swe. 
Russia 6-432. Siberia. 
Madeira. — America. 
1141. Lemna trisulca, Linn. 
Provinces 1 to 15. Native. 
Lat. 50—58. Devon, Wight, Kent. — “ Banff; Dr. L. Stewart.” 
Zones 1 2 3. Low grounds. 
Census 15 28 60. Ireland 6. English-british type. 
Europe all, except Finmark. 
Russia 6 432. Siberia. 
— Ameriva. 
