Bryophyten. 555 



and Leptodontium Canadense Kindb. is not regarded as certain, but the 

 names are cited by the author as Synonyms of H. riparia. 



Maxon. 



Cardot, J. and I. Theriot, New or Unrecorded Mosses 

 of North America. (The Botanical Gazette. XXXVII. 

 May, 1904. p. 363—382. pl. XVI— XXV.) 



The iollowing are new : Phascum hyalin otrichum, Pleuridium Bakeri, 

 P. Bakeri elongatum, Dicranelia cur v ata Missourica, Fissidens pusillus 

 brevifolius, Pottia nevadensis, Didymodon tophaceus decurrens, Desma- 

 todon Bushii, Barbula macrotricha, B. Bakeri, Grimmia cognata, Bar- 

 tramia ithyphylla fragilifolia, Webera chlorocarpa, W. Debati, Bryum 

 pendulum nevadense, B. polycladum, B. anceps, B. brevicuspis, B. distan- 

 tifolium, B. subdrepanocarpum, B. camptocarpum, B. dimorphophyllum, 

 Aulacomniuin palustre dimorphum, A. palustre lingulatum, Fontinalis 

 subcarinata, Climacium Americanum pseudo-Kindbergii, Brachythecinm 

 subasperrimum, Plagiothecium sulcatum, P. Groutii, Amblystegiuni laxi- 

 rete, Hypnum malacocladum. 



The iollowing new names are published, with descriptions : Dicra- 

 num alatam (= D. Bonjeani alatum Barnes), Fissidens Bushii i= F. 

 subbasilaris Bushii Card, and Ther.) 



There are in addition critical notes on other species, for the most 

 part recently published. Maxon. 



Collins, J. Franklin, Some Maine Mosses. (Rhodora. VI. 



June 15, 1904. p. 145, 146.) 



Distichium capillaceum, Myurella Careyana, Bartramia Oederi and 

 Encalypta ciliata, eollected near Frenchville, Maine, are new to 

 the State, and occur thus associated here and elsewhere within its 

 borders. Hotnalia trichotnitrion Jamesii is also new to Maine. 



Maxon. 



Dixon, H. N. and H. G. Jameson, The Students Handbook: 



of British Mosses. Second Edition. Eastbourne and 



London, 1904. I, 586 pp. 65 plates. 



In this new and enlarged edition of the Handbook Mr. Dixon has 

 introduced some thirty recent additional species and has drawn iive new 

 plates to illustrate them; he has corrected and supplemented the text of 

 his notes, and revised some of the genera, e. g., Sphagnum, Weisia, 

 Hypnum. He has inserted the derivations of the genera, and by the 

 employment of grave and acute accents in the index has supplied hints 

 as to the right pronunciation of generic and specific names. 



A. Gepp. 



Evans, Alexander W., Hepaticae of Puerto Rico IV. 

 Odontolejeunea, Cyclolejeunea and Prionolejeunea. (Bull, 

 of the Torrey Botanical" Club. XXXI. April, 1904. p. 183 

 —226. PI. 8—12.) 



After giving extensive descriptions of the two species of Odontole- 

 jeunea which occur in Puerto Rico, 0. lunulata and 0. Sieberiana, 

 vegetative reproduction is discussed for this genus. Leafy propagula 

 occur in both of the above species, the first leaf of which is small, 

 obovate, strongly reflexed, with a lobule represintcd by a hyaline papilla. 

 These rhizoids secrete slime. 



Cyclolejeunea is described as a new genus and is separated from 

 Odontolejeunea by the variable dentation of the margin of the lobe; the 



