70 AMERICAN FERN JOURNAL 
and several dwarf forms have been described as varieties 
(var. arctica Rupr., var. boreale Milde, etc.). 
23. E. palustre L. “Shores of the Arctic Sea” 
(Hooker). 
24. Lycopodium selago L. Along the arctic coasts all 
around and found in most islands, extending to 81° 43’ 
at Grinnell Land and to 77° in E. Greenland. 
25. L. annotinum L. Kotzebue Sound; Baffin Land; 
W. and E. Greenland to about 72°. The typical form is 
rare, the species being represented by a shorter, more 
rigid form, var. pungens Desv. 
26. L. clavatum L. 8S. Greenland, 61°. os 
26.7h. — chamecyparissus (A. Br). wW. > 
Greenland, < a 
28. L. ie L. Baffin Land; W. and KE. Greenland, — 
ba -Chukches Land. a 
ints dose iawn selaginoides (1) Lk. Ws: Greenland, 5 
64° 8. 
30. S. apes iL) Spring. Mouth of — River, : 
Northeast Siberia. | 
31. Isoetes lacustris L. W. Greenland, 60°. 
32. I. echinospora Dur. W. Greenland, 68° 21. 
COPENHAGEN, Frepruary 1911. 
