74 Bryophyten. — Pteridophyten 



Cavers, J., Notes on Yorks hire Bryophytes. I. Petalo- 



phyllum Ralfsii. (The Naturalist, London. September 1903. 



p. 327—334. 4 text-figures.) 



The author has examined this very rare hepatic which occurs 

 sparingly in patches of Pallavicinia on Coatham Marshes, York- 

 shire. Discovered first in Anglesey (1830), it has been observed 

 only in five British and one Italian Iocality, unless it should prove 

 to be identical with the Algerian Fossombronia corbulaeformis Trabut. 

 It occurs in small quantity always in damp sandy places near the sea. 

 The author describes in detail and with figures the structure oi the 

 gametophyte, and calls attention to the abundant occurrence of mycorhiza 

 in the ventral zone of the thallus, and to the formation of tubers much 

 resembling those described in the Californian Geothallus tuberosus. 

 The sexual organs and sporogonium agree closely with those of 

 Fossombronia. A. Gepp. 



HOLZINGER, JOHN M., TheMoss Flora o f theUpperMinne- 



sota River. (Minnesota Botanical Studies. Third Series. 



Part II. 3 July 1903. p. 109—127. pl. 19—20. pl. 21. f. 1. 



pl. 22. f. 2.) 



Based on collections made during June and July 1901. The influence 

 of interglacial and postglacial drainage in the intrusion oi ceriain 

 biologic elements from western North America is briefly touched 

 upon Of the % species mentioned in the systematic list 44 are new to 

 the state, and of this number 6 are described as new : Bryuin Minne- 

 sotense Card, and Ther., Bryum Holzingeri Card, and Ther., Catherinaea 

 MacMillani Holz., Fontinalis obscura Cardot, Amblystegium brachy- 

 phyllum Card, and Ther., and Amblystegium brevipes Card, and Ther. 

 Discussion of a new form: Hypnum aduncnm tenue Seh. forma ambly- 

 slegioides Ren., here described. William R. Maxon. 



LlLLlE, D., A new British hepatic. (Journal of Botany. 



XLI. 1903. p. 363, 364.) 



The author records the first finding of Jungermannia Kc/urini Limpr. 

 in the British Isles.atOusdale, Caithness, in June 1903; and 

 adds a füll description of the plant. Harpanthus Flotowianus was also 

 found. A. Gepp. 



Macvicar, Symers M., Anthoceros dichotomus in Britain. 



(Journal of Botany. XLI. 1903. p. 347—348.) 



The author describes this Mediterranean hepatic which has 

 recently been found in small quantity on the Devonshire coast. 

 Originally found near Firenza, it was defined by R a d d i in 1808. It 

 bears small tubers on the under side of the costa and is thus distingui- 

 shed at once from the other British species. A. Gepp. 



Geze, J. B., Note sur la presence de X Asplenium vlrlcle 



Huds. dans les environs de Toulouse. (Bull. Soc. 



bot. de France. L. 1903. p. 481—482.) 



\J Asplenium viride Hudson ne s'eloigne guere des stations tres 

 fraiches des montagnes. M. Geze en a trouve un exemplaire dans un 

 point des environs de Toulouse, ä 140 m. d'altitude. Cette espece 

 abonde dans les Cevenes granitiques et schisteuses, en particulier dans 

 les schistes sericiteux precambriens . röche oü l'element calcaire fait 

 completement defaut. Asplenium viride ne saurait donc etre considere 

 comme une espece calcicole. C. Flahault. 



