316 SUMMARY OF CURRENT RESKARCHES RELATING TO 



a depth of 80-90 ft., in the Kansan Drift of Iowa. The plants are 

 green, and show all the details of cell-structure. It is clearly a Gampto- 

 thecium, but corresponds with no existing American species ; it is 

 accordingly published as a new species, C. Woldenii, differing from 

 C. pmnatifidum and C. aureum in its entire leaves and very few iso- 

 diametrie alar cells. 



North American Hepaticae.* — A. W. Evans publishes a seventh 

 chapter of "Notes on North American Hepatica?." An important 

 addition to the flora is Bumjia romanka, a thalloid genus found in 

 Rumania in 1897, and first described by Radian in 1903, later col- 

 lected in the Tatra Mountains of Hungary, and subsequently gathered 

 at altitudes of 7200-8800 ft. in Alberta and British Columbia by 

 A. H. Brinkman. Though Brinkman's specimens are sterile, they are 

 obviously to be referred to Bucegia because of the structure of the 

 thallus, which has dolioform stomata like those of Marchantia, but 

 approaches Rehoulia in respect of its air-chambers and synthetic tissue. 

 Another plant new to the North American flora is Fossomhronia lamel- 

 lata Steph., recently gathered in Florida by S. Rapp, and remarkable 

 for its well-differentiated tubers, which are discussed and figured in the 

 present paper. It has a wide distribution in South America, and is 

 synonymous with F. tuherifera Goeb, Critical notes on the inflorescence 

 of Jungermannia Schiffneri Evans, the structure of Cephalozia Loifles- 

 bergeri SchifPn., and of ColoJejeimea suhcristata, a new species discovered 

 in Florida, are important features of the paper. 



Portuguese Hepaticae.t— A. X. P. Coutinho publishes an account 

 of the Portuguese Hepatic^ in the herbarium of Lisbon University, com- 

 prising sixcy-eight species, from collections made by himself, Welwitsch, 

 Luisier, and others. He gives a Latin description of each species, the 

 local distribution, the principal references to literature, and a key to the 

 genera. He adds nine species to the Portuguese flora. 



Thallophyta. 

 Algse. 



(By Mrs. E. S. Gepp.) 



Phytoplankton of the Antarctic! — L. Mangin publishes a full 

 report on the collections of phytoplankton made by M. Gain on the 

 second French Antarctic Expedition in the " Pourquoi pas ?" 1908-10. 

 The first part of the report consists of a list of the stations, with an 

 enumeration of the species found there, together with an estimate of 



* Bryologist, xx. (1917) pp. 17-28 (1 pi.), 

 t Hepaticse Lusitanicae. Lisboa : M. L. Torres (1917) 39 pp. 

 X Deuxieme Expedition Antarctique Fran^aise (1908-10). Phytoplanctoa de 

 TAntarctique. Paris : Masson (1915) 96 pp. (3 pis., map, and 58 figs.). 



