576 Howe: Phvcological studies 



and attributed to Sachs, except that the pinnules are scarcely nar- 

 rowed at the base and are of course flatter than indicated in that 

 figure. The second specimen — which is of the same species — 

 is marked " Fucus taxifolius Vahl variet. C. M. 1821. ex Ind. 

 occ." The "In mari Indico & rubro " habitat, also cited by C. 

 Agardh in his original publication of "j8 crassifolia" was evidently 

 derived from the erroneously identified Fucus piuuatus of Linnaeus 

 fil. and of Turner, which he cites as a synonym. J. Agardh ap- 

 parently had become suspicious of the alleged synonymy, for (Till 

 Alg. Syst. I : 14) he remarks, " utrum synonyma ibidem allata 

 * * * ad eandem pertineant, dicere non auderem." 



Caulerpa sertularioides (S. G. Gmel.) 



Fucus sertularioides S. G. Gmel. Hist. Fuc. 151. pi. 15. f. ./. 



1768. 

 Fucus plumaris Forsk. Fl. Aegypt.-Arab. 190. 1 775. 

 Caulerpa plumaris Ag. Sp. Alg. 1: 436. 1822. — J. Ag. Till 



Alg. Syst. 1: 15. 1872. — Web, -v. Bosse, Ann. Jard. Bot. 



Buitenzorg 15 : 294. 1898. 



That Gmelin's Fucus sertularioides is the same as the plant 

 commonly known as Caulerpa plumaris is admitted by J. Agardh 

 and, more recently, by Madame Weber-van Bosse. Gmelin's 

 figure and description seem sufficiently conclusive ; his plant was 

 American ("in corallis americanis "), though no definite locality is 

 given. The rulings of the recent International Botanical Congress 

 at Vienna, though professedly applying only to the spermatophytes 

 and pteridophytes, are explicit as to the maintenance of the oldest 

 specific name. 



Acetabulum Farlowii (Solms) 



Acetabularia Farlowii Solms, Trans. Linn. Soc. Bot. II. 5 : 27. 



pi. 3. f. 1. 1895. 



This species was founded upon three somewhat imperfect 

 plants sent by Farlovv to Thuret. In the place of publication the 

 material is said to have come from the " southern point of Florida, 

 Key West," but Professor Farlow writes us that the alga was col- 

 lected in Biscayne Bay, Florida, by Dr. E. Palmer in 1874. At 

 the close of the original description, which was necessarily brief 



