59 



1) Stem not equally striate. Typical form 



and sub-species (compare above under 

 -f- -f- (haplostichae contiguae.) 26. 

 dissoluta A. Br. and 29. nudifolia.} 



2) Stem almost equally striate. 33. Shaffneri 



A. Br. 

 O O Very long ; leaves very short, with few 



nodes. 34. subsp. jaba/a A. Br. 

 b) Leaves singly corticated; compare. 27. altaica 



A. Br. 

 9J. Qj. Cells of the cortex short and numerous, spines 



well developed. 35. strigosa A. Br. 

 0)0) Sporophydia larger. 



Q Cells of cortex and spines quite numerous. 



1) Fascicled. 36. polyacanlha A. Br. 



2) Spines single, not fascicled. 37. excelsa Allen. 



OO Cells of cortex and spines fewer. 



1) Incrustata. 38. intermedia A. Br. 



2) Clean, marine, spores larger. 39. subsp. 



baltica (Hartm.) Fries. 



* * Secondary cells of the cortex prominent. Aulacanthae. 

 X Sporophydia small, nucleus 460-550 (-700) long. 

 Papillae and spines on the stem usually few 

 (not fasciculate). 

 Q Nuclei with (10-) 11-14 striae. 



Q) Bracts obtuse, anterior-intermediate mostly shorter 



than the lateral ones. 



i) Bracts commonly unilateral (only on anterior 

 aspect of leaf.) Diam. of antheridium, 

 360. 

 a) Papillae of the stem short, scarcely noticed. 



aa. Leaves more or less corticated. 40. fcetida 



A. Br. 

 4 Antherida and Sporophydia united. 40. 



a 



4 4 Antheridia and sporophydia often sepa- 

 rated, sub-sp. 40. Rabenhorsiii A. Br. 

 bb. Leaves naked, subsp. 40. gymnophylla 



A. Br. 



4 Antheridia and sporophydia united. 40. 

 a 



