BULLETIN 



OF THE 



TORREY BOTANICAL CLUB 



Vol. XVI J New York, January 12, 1889. [No. I 



On Some New or Imperfectly Known Algae of the United States. I. 



By W. G. Farlow. 



(Plates LXXXVII and LXXXVIII.) 

 Chrysymenia PSEUDODICHOTOMA n. sp., pi. LXXXVIII, figs. 



7 and 8. 



Fronds 4 to 8 inches high, with discoidal base and a 

 solid, cylindrical, cartilaginous stipe which branches mono- 

 podially and ends in ovate or obovate saccate extremities, i_ 

 to I inch long, % to }4 inch broad, at the bases of which 



unilateral branches are given off repeatedly and, elongating 

 and forming new terminal sacks, cause the older parts of 

 the stipe to appear to be dichotomous with more or less widely 

 spreading and flexuous divisions. Cystocarps borne in the 

 walls of the sacks, projecting externally and internally, with 

 ' distinct carpostomes. Tetraspores? 



Santa Barbara, Monterey, Santa Cruz and St. Vincent, Cal. 



The determination of this species has caused much perplexity 

 among American algologists. The first specimens seen were 

 collected at Santa Cruz by Dr. C. L. Anderson in 1876 and were 

 sterile. In them the saccate branches were numerous and the 

 stipes comparatively short, so that there was a certain resem- 

 blance to species like Chrysymenia ohovata, Sond., and the species 

 was quoted under that name in Proc. Am. Acad. Arts and Sci., 

 vii., 242*. Larger sets of specimens received later from Mrs. 



*By a misprint as Cryptonemia ohovata. 



