Box.— Vol. II.] NOTT—CALIFOKNIAN NITOPHYLLA. 29 



the frond. In color, the two species are much the same. 

 The midrib of N. harveyanum is usually more pronounced 

 than that of N. multilobuin. N. harveyanum is much slen- 

 derer than N. imiltilobum, and may attain a height three or 

 four times that of the latter. 



Habitat. — On bare rock surfaces or on rocks coated with 

 Corallines, from high water mark to the sublittoral zone. 



DistribiUio7i. — Limited at the present time to the Cali- 

 fornian coast. Has now been reported from Carmel Bay 

 northward to Cape Mendocino. Apparently a northern 

 form. 



Localities. — Carmel Bay! (C. P. Nott) ; Pacific Grove! 

 (C. P. Nott); Santa Cruz! (Mrs. J. M. Weeks); Land's 

 End, San Francisco! (W. A. Setchell; C. P. Nott); Golden 

 Gate, San Francisco Bay (Berggren, fide J. Agardh, Epi- 

 crisis Floridearum, 1876, p. 698; W. A. Setchell) ; Lime 

 Point, San Francisco Bay! (C. P. Nott); Dillon's Beach 

 (W. A. Setchell); Fort Ross! (C. P. Nott); Cape Men- 

 docino (C. G. Pringle, in herb., W. G. YdixXo^^fide W. A. 

 Setchell). 



Nitophyllum harveyanum J. Ag. 



Epicrisis Floridearum, Contin. Spec. Gen. et Ord. Alg., 1876, p. 462. 



Nitophyllmn harveyanum J. Ac, Phyk. Bor.-Amer. Collins, F. S., 

 HoLDEN, I., and Setchell, VV. A., Fasc. XIV, No. 693, 1900. 



Synopsis. — Frond both prostrate and erect. Prostrate frond creeping, 

 linear, flat; without rhizoids, destitute of midrib, and not proliferating; 

 branching, branches becoming erect at intervals; margin entire, serrate, or 

 somewhat laciniate. 



Erect frond stalked, flat, linear; with midrib and flabellate nerves; branch- 

 ing, rarely proliferating, margin entire, or somewhat laciniate. Branches 

 palmate or subpalmate, linear or becoming expanded, occasionally lobed or 

 cleft. Stalk flat, linear, with distinct midrib, becoming thickened and cylin- 

 drical through wearing away of margin and renewed growth of median por- 

 tion. Midrib narrow, conspicuous, branching above, becoming divided into 

 flabellate nerves, the latter conspicuous, branching freely, remaining free and 

 flabellate. Veins minute or wanting. 



Sporangia in linear sori extending flabellately from the nerves to the mar- 

 gin of the frond. Antheridia as yet unobserved. Cystocarps large, promi- 

 nent, irregularly disposed, projecting beyond the surface. 



