42 Algen. 



not to be compared with the ordinary verticillate branches or 

 branchlets; and the further conclusion is reached that the hy- 

 popeltal process and the distal portion of the coronal process 

 are lateral outgrowths like the sporangium , so that the 

 whole cap, with all its radially arranged parts except the vesti- 

 biiles, corresponds to a single primary whorl of branches. 



Trelease. 



CuRTlS, G. H., Some Diatomaceae of Kansas. (Trans- 

 actions of the Kansas Academy of Science. XVII. p. 67 

 —78. p. 1901.) 



Annotated lists of species from several localities, and of those which 



serve as food of fish in Central Kansas. Trelease. 



Richards, H. M., Ceramothamnlon Codii , a new rhodo- 

 phyceous alga. (Bulletin of the Torrey Botanical Club. 

 XXVIII. p. 257—265. PI. 21—22. May 1901.) 



A Bermudan epiphyte growing on Codinm tomentosnm, of simiiar 

 habit to Rhodochorton and with general cell and chromatophore 

 resemblance to Callithaiiinioii and polyspores suggestive of those of 

 Ptilota. Trelease. 



Cannon, W. A., A note on the bladder Kelp, Nereo- 

 cystis Liltkeana. (Torreya. I. p. 49—52. May 1901.) 



Though tough, when subjected to a longitudinal pull the 

 cysts and stem are very brittle when Struck, which is con- 

 nected with its mode of occurrence in places where though 

 subjected to great strain by the waves, a blow is rareiy 

 received, while the sea-palm, Postelsia, between tides, does not 

 possess this brittleness. Trelease. 



H OWE, M. A., The Allen collection of Characeae. 



(Journal of the New-York Botanical Garden. II. p. 52 — 54. 



April 1901.) 



Account of some 8000 sheets of Characeae accompanied by some 

 2000 microscopial preparations presented by Dr. J. J. Allen to the New- 

 York Botanical Garden. ^_ Trelease. 



Mereschkowsky, C, On Okedenia Eul. (Annais and Magazine 

 of Natural History. Vol. 8. No. 47. Nov. 1901. p. 415 

 —423. PI. VH. fig. in Text.) 



The author here revives the genus Okedenia of Eulen- 

 stein, founded for Amphlpleiiva inflexa Breb, and gives an 

 emended diagnosis of the genus, of which the most important 

 character is the form and position of the chromatophores. These 

 Vary in number from 4 — 38 and are „usually of the shape of 

 the letter H, sometimes rounded, disposed in pairs along the 

 connecting zone rareiy along the valves, with a central 

 pyrenoid usually common to each pair". Besides the 

 original species Okedenia inflexa^ the author places in this 



