436 Bryophyten. 



sonü Broth., and Taxithellum [Oligostigma) spuriosubtile Broth. One 

 new "combination" appears: Myurium Foxworthyi Broth. {Oedicladium 

 Foxworthyi Broth., 1908). Maxon. 



Clapp, G. L., The life history of Aneura pinguis. (Bot. Gazette. 

 LIV. p. 177-193. pl. 9-12. Sept., 1912.) 



The results of this investigation are summarized by the writer 

 as follows: 



1. The gametophyte of Aneura pinguis is a simple, slightly 

 differentiated thallus. 



2. Archegonia and antheridia are borne on lateral branches of 

 dioecious plants; they develop according to the Junger iuannia type. 



3. The sporophyte of Aneura pinguis is highly specialized. 

 One half of the embryo at its first division forms a haustorial cell; 

 from the other half capsule, seta, and a temporary foot develop. 

 Sterilization of the tissue of the capsule occurs at three periods: 

 1) the wall and apical cushion are cut out; 2) the elaterophore is 

 defined; 3) sporogeneous tissue is differentiated into elaters and 

 spore mother cells. 



4. The capsule splits by four early defined valves. The spores 

 are echinate and contain chloroplasts at maturity. 



5. The protonemal stage is reduced to one or two cells. The 

 spore coat incloses the very young sporeling. 



6. The mature thallus offen contains a fungus. Infection takes 

 place in some sporelings as early as the two-celled stage, Rhizoids 

 may be infected from the thallus. 



7. No gemmae are found on Aneura pinguis. New plants are 

 produced by the dying back of the old thallus. Maxon. 



Evans, A. W., Notes on North American Hepaticae, II L 

 (The Bryologist. XV. p. 54-63. pl. 2. July, 1912.) 



In the present paper 10 species of Hepaticae are considered, 4 

 of which are tropical Lejeuneae. The others include 2 species {Pal- 

 lavicinia hihernica and Sphenolobus scitulus) which have been more 

 or less misunderstood by writers. Five of the species discussed are 

 accompanied by critical remarks, but the others are introduced to 

 indicate extensions or restrictions of geographical distribution. One 

 new "combination" appears: Cololejeunea Camilli {Lejeunea Camilli 

 Lehm.) Maxon. 



Lorenz, A., Vegetative reproduction in the New England 

 Frullaniae. (Bull. Torrey Bot. Club. XXXIX. p. 279—284. fig. 1—3. 

 June 1912.) 



Notes on the occurrence of propagula in several species of 

 Frullania, and upon their morphology. In conclusion the author 

 States that the "production of Brutblätter is more frequent in the 

 dioicous rather than in the autoicous species of Frullania. Frullania 

 ehoracensis, F. Brittoniae, and F. riparia are all dioicous, as in F. 

 Bolanderi\ while F. plana, although autoicous, is usually sterile. 

 All the European species of Frullania, with the exception of the 

 recently described F. cleistostoma Schiffner and WoUny, are dioicous." 



Maxon. 



