50 MORPHOLOGY AND TAXONOMY OF BRYOPHYTES [Bot. Absts., Vol. VII, 



reproductive apparatus widespread in lower groups of Dicotyledons, especially in Amentales. 

 He distinguishes three stages of evolution of reproductive apparatus or "gonelle:" (1) Am- 

 phigonelle, which represents lowest degree of differentiation among Dicotyledons, and is 

 characterized by diffuseness, for axis is polycentric — i.e., with many centers of growth; 

 (2) Acrogonelle with*a concentration of parts making a monocentric axis; and (3) Anthogonelle, 

 which is set off from preceding by development of corolla. The last corresponds best with pop- 

 ular conception of flower. Bound up with above ideas is author's theory of stem evolution — 

 that there are two principal stages, the stage of the stipe with its Jrondomes and stage of 

 the caulome with its phyllomes. The amphigonelle is considered stipular in character, as shown 

 in polycentric axis; its receptacle is broken up into gonoclines, each of which builds a part 

 of the gonelle called gonelette. The amphigonelle is one of the characteristics of Amentales; 

 and the catkin, capitulum, or glomerulus are amphigonelles rather than flowers or inflores- 

 cences. Amentales afford opportunity to study modifications of amphigonelle and its transi- 

 tion to acrogonelle. Author devotes most of work to morphological analysis of class Amen- 

 tales, applying above and other details of his conceptions. — In a second (smaller) portion he 

 presents his ideas of the phylogeny of class, in which he includes the following orders: Jug- 

 landales, Salicales, Casuarinales, Cupuliferae, Myricales, Piperales, and Chloranthales. — 

 James P. Kelly. 



337. Winkler, Hans. Verbreitung und Ursache der Parthenogenesis im Pflanzen— und 

 Tierreiclie. [The occurrence and causes of parthenogenesis throughout the animal and plant 

 kingdoms.] vi + 231 p. Gustav Fischer: Jena, 1920. 



MORPHOLOGY AND TAXONOMY OF BRYOPHYTES 



Alexander W. Evans, Editor 



338. Anonymous. Sphagna. Moss Exchange Club Ann. Rept. [York] 23 : 205-210. 

 1918. — The species of Sphagnum listed number 33 and represent the specimens offered for 

 exchange by the Club during 1917. Several of the species include named varieties and forms. 

 Critical notes by J. A. W[heldon] are interspersed throughout. — A. W. Evans. 



339. Anonymous. True mosses. Moss Exchange Club Ann. Rept. [York] 23:210-214. 

 1918. — Under the "true mosses" only the Acrocarpi are included. The species listed num- 

 ber 65, and critical notes are furnished by R. N. M[eldrum], W. E. N[icholson], and J. A. 

 W[heldon]. — A. W. Evans. . 



340. Anonymous. Pleurocarpi. Moss Exchange Club Ann. Rept. [York] 23 : 214-217. 

 1918. — The pleurocarpous mosses listed number 33, and the critical notes included are by H. 

 N. D[ixon], W. I[ngham], and J. A. W[heldon]. — A. W. Evans. 



341. Anonymous. Hepatics. Moss Exchange Club Ann. Rept. [York] 23:217-219. 

 1918. ^The species listed include 5 Ricciae, 33 Jungermanniales, and 1 Anthoceros. Lepidozia 

 intermedia Schiffn. is recognized as a valid species, although Schiffner had proposed it pro- 

 visionally. The critical notes are by H. H. K[night] and S. M. M[acvicar]. — A. W. Evans. 



342. Anonymous. Synopsis of the European Sphagna [Corrections and additions]. Moss 

 Exchange Club Ann. Rept. [York] 23:219-221. 1918.— The data here given are supple- 

 mentary to J. A. Wheldon's work, published under the above title. The "additions" relate 

 to varieties and forms of 19 species of Sphagnum, all supposedly new to the British Isles. 

 Two of these are varieties of S. franconiae Warnst., a species not included in earlier lists of 

 British Sphagna. — A. W. Evans. 



343. Anonymous. Sphagna. Moss Exchange Club Ann. Rept. [York] 24: 229-234. 

 1919. — The species of Sphagnum listed number 26 and include numerous varieties and forms. 

 As in the previous Annual Report many of the specimens cited are accompanied by critical 

 remarks, signed "J. A. W[heldon]." — A. W. Evans. 



