BOT.— Vol. II.] NOTT—CALIFORNIAN NITOPHYLLA. 41 



to their shape and position that was observed in N. ruprecht- 

 ianum. There are to be found forms with the sori 

 arranged in flabellate, occasionally confluent lines, differ- 

 ing, however, from N. riipi-echtianuni in the relative nar- 

 rowness of the lines. Numerous transition forms occur 

 which combine the flabellate linear sori with rounded or 

 linear patches upon the margin. Finally, frequent instances 

 may be found of plants bearing the sori as rounded or 

 semicircular patches along the margin, or upon marginal 

 proliferations. 



The same conclusion that was reached in regard to the 

 limits of the species in the case of N. ricprechtiamtni may 

 be applied to N. violaceum, for here almost exactly similar- 

 conditions exist as to specific characters. The variations 

 are in similar directions. Extended study of the forms from 

 numerous localities has shown that they may be referred 

 along the lines there laid down, which leads to the conclu- 

 sion that N. violaceimi is a species with limits sufficiently 

 wide to include all the forms common to the coast. 



The two species established by Agardh (1898, pp. 92 and 

 121), viz., N. stenoglossuni and Neuroglossum lohulifertmi^ 

 seem, therefore, to the writer, as nearly as can be deter- 

 mined from the descriptions, to be forms of N. violaceum. 



Habitat. — On rocks covered with Corallines, Bryozoa 

 and Porifera, in sheltered situations or in rock pools on 

 gently sloping shores, and on piles of wharves, in the 

 littoral and sublittoral zones. 



Distribution. — Along the coast from San Pedro north- 

 ward to Fort Ross. 



Localities. — San Pedro! (Mrs. Lawrence; Mrs. S. C. 

 Purdy); White's Point! (A. J. McClatchie) ; Santa Bar- 

 bara! (Dr. L. N. Dimmick; Mrs. S. P. Cooper); San 

 Simeon! (E. Palmer); CarmelBay! (C. P. Nott); Pacific 

 Grove! (M. A. Howe; C. P. Nott); Santa Cruz! (Dr. C. 

 L. Anderson); Land's End, San Francisco! (C. P. Nott) 

 Fort Point, San Francisco! (M. A. Howe; W. A. Setchell 

 C. P. Nott) ; North Beach, San Francisco ! (W. A. Setchell 

 C. P. Nott); Golden Gate, San Francisco Bay (Berggren, 



