164 PALEOBOTANY [BoT. Absts., Vol. VII, 



data. The moss list contains precise statements of locality, together with distributional or 

 diagnostic notes upon many of the species, even the commonest. Campylopus Echernieri 

 Besch. and Amblysteguim riparium (L.) B. & S. are reported from Madagascar for the first 

 time, and the fruiting plant of Leucoloma albocinctum R. & C. is here first described. Funaria 

 delicatula, Brachymenium argenteum, Bryum Perrieri, Philonotis Perrieri, and Rhacopilum 

 Perrieri are described as new. There are likewise discussoins of Brachymenium capitulatum 

 Mitt, and its Madagascan occurerence; of the generic characters of N anomitriopsis R. & C, 

 and of the variability of Pogonatum subformosum Besch., a new variety being described 

 and figured. Leucomium mahorense Besch. is reduced to a synonym of L. debile (Sull.) 

 Mitt. — E. B. Chamberlain. 



1094. Williams, R. S. Calymperaceae of North America. Bull. Torrey Bot. Club 47: 

 367-396. PI. 15-17. 1920.— A discussion is given of the Calymperaceae to be treated in the 

 North American Flora and comprising the genera Syrrhopodon and Calymperes. In the former 

 genus are described the following species: S. rigidus Hook. & Grev., S. Bernoullii C. Miill., 

 S. floridanus Sull., S. incompletus Schwaegr., S. Berterianus (Brid.) C. Mull., S. martini- 

 censis Broth, S. Gaudichaudii Mont., S. inflexus Mitt.,S. Husnoti Besch., S. flavescens C. 

 Mull., S. tenuifolius (Sull.) Mitt.,*S. lycopodioides (Sw.) C. Miill., S. recurvulus Mitt., S. 

 graminicola Williams sp. nov., S. elongatus Sull., S. texanus Su\l.,S. ligulatus Mont., 5. para- 

 siticus (Sw.) Besch., S. filigerus (Aust.) Williams comb, nov.; in Calymperes the following 

 are given: C. Richardi C. Miill., C. cubense Williams sp. nov., C. emersum C. Miill., C. disci- 

 forme C. Mull., C.Donnellii Aust., C.nicaraguense Ren. &Card., C. Herifeawdi Paris & Broth., 

 C. Nashii Williams sp. nov., C. Guildingii Hook & Grev., C. lonchophyllum Schwaegr., C. 

 Levyanum Besch. and C.fluviatile'WiUiamssp. nov.— P. A. Mum. 



1095. Williams, R. S. Sematophyllum Smallii, sp. nov. Bryologist 23:76-78. PI. 6. 

 1820.— Under the above name the author describes and figures a new moss from Florida.- 

 E. B. Chamberlain. 



1096. Willis, M. A. Notes on two hepatics. Ann. Rept. and Trans. Manchester 

 Microsc. Soc. 1916: 44-45. 1918.— The author briefly describes the gametophytes of 

 Sphaerocarpus michelii and the capsule of Anthoceros laevis. — C. E. Allen. 



PALEOBOTANY AND EVOLUTIONARY HISTORY 



E. W. Berry, Editor 



1097. Anonymous. Ancestral studies of Compositae. [Rev. of: Small, J. The origin 

 and development of the Compositae. New Phytol. Reprint No. 11. XI + SS4 p., 6 pi. Wm. 

 Wesley and Son: London, 1919.] Nature 105: 450. 1920.— See Bot. Absts. 7, Entry 333. 



1098. Akber, E. a. N. and F. W. Lawfield. On the external morphology of the stems 

 of Calamites, with a revision of the British species of Calamophloios and Dictyocalamites of 

 Upper Carboniferous Age. Jour. Linn. Soc. Bot. London 44:507-530. PI. 23-25. 1920.— A 

 treatment of the morphology of the rather rare casts or impressions of the external features 

 of Calamite stems with a short systematic revision of the best known British members of the 

 genera Calamophloios and Dictyocalamites, genera recently proposed by Arber for these 

 fossils in order that they may be distinguished from the much more common pith casts. 

 The following external features are discussed in detail: nodes, internodes, leaf scars, branch 

 scars, and root scars. There is much difliculty in correlating specimens showing external 

 features with those represented only by pith casts; this correlation, however, is made in 

 several cases. — A. J. Eames. 



1099. Berry, Edward W. The geological history of the sweet gum and witch hazel. 

 Plant World 22 : 345-354. 2 fig. 1919.— The present distribution of the sweet gum and witch 

 hazel is shown on a map. The disconnected distribution is a sure indication of ancient line- 



