SUPPLEMENT. 
123 
Hab. On rocky sea-shores. Newbury port, Mass. Captain Pike , 1852. (v. v.) 
Fronds , two feet long or more, from one half-inch to one or two inches in width, 
dichotomous, with a thick midrib, bordered by a sharply serrated lamina. Air-vessels 
none. Receptacles flat, formed in the acuminated extremities of the branches, sharply 
serrate like the other parts of the frond. 
I have received a small fragment of this common European plant, stated to have 
been found in the above locality on the American coast. It is hardly probable that it 
is either confined to one locality, or even rare, wherever it occurs ; yet none of my 
other American correspondents have sent it ; nor do I know the circumstances under 
which Captain Pike obtained it. I hope this notice may lead some one on the coast to 
investigate the subject ; for European botanists are yet uncertain whether F. serratus 
be really a bona fide native of the American coast, or merely a stray waif, accidentally 
cast ashore. 
Page 106, add, 
2. Z ON aria jlava , A g. ; frond erect, with an elongated, branched, woolly stipes, the 
branches expanding into cuneate, flabelliform, vertically cleft and laterally laciniated, 
naked laminae ; segments wedge-shaped, with radiating, longitudinal striae ; sori 
roundish, scattered. J . Ag. Sp. Alg. 1 , p. 110. Stypopodium fiavum , Kiitz. Sp. Alg. 
p. 563. 
Hab. Pacific Coast, Dr. Schott, (v. s.) 
A small specimen, apparently referable to this species, was collected by Dr. Schott 
on the Pacific coast, but the locality is not stated. It is about two inches high, much 
narrower and more branched than Z. lohata , with stupose, linear, riblike patches 
extending up the principal lobes. Perhaps, therefore, it is rather referable to Z. stuposa , 
J. Ag., if that be a distinct species from Z. Jlava. 
Page 113, add, 
VI * STRIARIA, Grev. 
Root a small, naked disc. Frond tubular, membranaceous, continuous, branched. 
Fructification, groups of naked, roundish spores, disposed in transverse lines. 
1. Striaria attenuata , Grev. ; branches and ramuli mostly opposite, tapering to each 
extremity. Grev. Crypt. FI. Syn. p. 44. tab. 288. Alg. Brit. p. 55. t. 9. Wyatt, 
Alg. Damn. No. 160. J. Ag. Sp. Alg. 1. p. 80. Harv. Phyc. Brit. t. 25. Kiitz. 
Sp. Alg. p. 553. Phyc. Gen. t. 21. f. 11. 
Hab. Flushing, New York Bay, Professor Bailey. 
