BOT.-VOL. II.] NOTT-CALIFORNIAN NITOPHYLLA. 23 



serrate or toothed. Segments linear, frequently prolonged, occasionally 

 expanded and lobed at apices. Veins not numerous, extending through the 

 frond, branching and anastomosing. 



Proliferations minute or wanting, appearing along the margin of the frond. 



Sporangia in small elliptical sori scattered over the entire frond, tending to 

 become arranged into lines. Antheridia in whitish areolate patches scattered 

 over surface. Cystocarps conspicuous, irregularly disposed over both sur- 

 faces, projecting beyond the surface. 



Remarks on the 6>6;c/^s.— The color of N. fryeanum is 

 very attractive, being a bright rosy red in both the hving 

 and dried states. Some of the plants reach a height of 15 

 cm. The size and more especially the shape is subject to 

 considerable variation. The frond may be short and deeply 

 lobed, or long and branching, with the branches consider- 

 ably prolonged and linear. 



N. fryeanum is noteworthy as being one of the three 

 forms of the coast which possess delicate, microscopic 

 veins. With the exception of this character, N. fryeanum 

 and N. sfectabile have many points in common. The last 

 named species, however, is destitute of any kind of 

 venation. 



It is a matter of some doubt whether Harvey's (1858, 

 Supp., p. 128) original description of this plant does not 

 better apply to N. multilohtim. His mention of a lobed and 

 crenulate margin does not seem to hold good for N. frye- 

 anum. Harvey's name, however, was applied to the speci- 

 mens issued in the Alg. Amer.-Bor. Exsiccate (1878, No. 

 69) and Agardh (1898, p. 74) also retains Harvey's name, 

 with an additional reference to the specimens above men- 

 tioned. It seems advisable, therefore, to retain this name 

 for the plant here dealt with, which is identical with that 

 published in the Alg. Amer.-Bor. Exsiccate. 



There were reasons for supposing that N. fryeanum 

 might be referred to N. ruthenicujn (P. & R.) Kjellman 

 (1889, p. 25, PI. I, figs. 11-12), with which it agrees to a 

 certain extent in the characters of venation and sori. Care- 

 fully selected specimens were forwarded to Professor Kjell- 

 man, who replied that the two species were not identical. 

 The plants exchanged with Kjellman for purposes of 



