Published in American Fern Journal, in 1931, in volume 21, pages 1-10
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544226
Published in American Fern Journal, in 1931, in volume 21, pages 11-20
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544227
Published in American Fern Journal, in 1931, in volume 21, pages 21-24
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544228
Published in American Fern Journal, in 1931, in volume 21, pages 24-25
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544229
Published in American Fern Journal, in 1931, in volume 21, pages 25-26
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544230
Published in American Fern Journal, in 1931, in volume 21, pages 26-27
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544231
Published in American Fern Journal, in 1931, in volume 21, pages 27-29
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544232
Published in American Fern Journal, in 1931, in volume 21, pages 49-57
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543887
Published in American Fern Journal, in 1931, in volume 21, pages 57-63
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543888
Published in American Fern Journal, in 1931, in volume 21, pages 64-71
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543889
Published in American Fern Journal, in 1931, in volume 21, pages 71-73
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543890
Published in American Fern Journal, in 1931, in volume 21, pages 74-75
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543891
Published in American Fern Journal, in 1931, in volume 21, pages 75-76
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1543893
Published in American Fern Journal, in 1931, in volume 21, pages 81-90
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544319
Published in American Fern Journal, in 1931, in volume 21, pages 90-102
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544320
Published in American Fern Journal, in 1931, in volume 21, pages 103-106
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544321
Published in American Fern Journal, in 1931, in volume 21, pages 106-109
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544322
Published in American Fern Journal, in 1931, in volume 21, pages 109-111
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544323
Published in American Fern Journal, in 1931, in volume 21, pages 111
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544324
Published in American Fern Journal, in 1931, in volume 21, pages 117-124
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544079
Published in American Fern Journal, in 1931, in volume 21, pages 125-132
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544080
Published in American Fern Journal, in 1931, in volume 21, pages 132-136
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544081
Published in American Fern Journal, in 1931, in volume 21, pages 136-139
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544082
Published in American Fern Journal, in 1931, in volume 21, pages 139-140
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544083
Published in American Fern Journal, in 1931, in volume 21, pages 140-143
Created: 2017-04-23, modified: 2017-04-23
doi:10.2307/1544084