324 University of California Publications. ibotany 



Pteridium Juergensii J. Agardh. 



St. Paul Island, Alaska, Buprecht (1851, p. 245, under Deles- 

 seria eomplanata) , Far low (1886, p. 473. under I). Juergensii) ; 

 Unalaska, Alaska, BuprecM (1851, p. 245, under I). compla- 

 nata); Sannak Island, Alaska, Turner (1886, p. 85, under J>. 

 Juergensii) . 



We have not seen a specimen. 



a 

 Pteridium spinulosum (Buprecht) J. Agardh. 



St. Paul Island, Alaska, Buprecht (1851, p. 244, under D. 

 Beeringicma f. spinulosa) ; Bay of Morozof (Morzhovoi Bay), 

 Alaska, Townsend, No. 5776! 



We have ventured to refer here a narrow, sterile plant, 

 but not without some doubt. J. G. Agardh (1876, p. 483) leaves 

 it to be understood that he knows nothing of the sori of this 

 species and DeToni (1900, p. 714) says: "fructibus ignotis," 

 but Rupreeht says distinctly (1851, p. 244), that the somewhat 

 young tetraspores, in a specimen from St. Paul form a long line, 

 on each side of the midrib, extending from near the base of a 

 branch very nearly to the tip. 



Pteridium alatum (Hudson) J. Agardh. 



Victoria, B. C, Saunders (1901, p. 437, under Delesseria 

 a lata); on stems of Nereocystis, probably near Esquimalt (no 

 special locality given). B. C, Harvey (1862, p. 437, under 

 J), alata var. latissima) . 



We have seen no specimens of this species from our territory 

 aud simply quote the above localities. The narrow Delesseriea? 

 of our coast need more careful study and revision. 



Pteridium? serratum (P. & R.) DeToni. 



St. Paul Island, Alaska, Buprecht (1851, p. 245, under Deles- 

 seria serrata) ; Unalaska, Alaska, Postels and Buprecht (1840, 

 p. 15, under D. serrata); Alaska, Saunders (1901, p. 438, under 

 I), serrata) . 



Rupreeht states that his plants grew generally on Ptilota 

 Asplenioides, but Saunders gives neither habitat nor exact 

 locality. 



