Pteridophyten. 247 



to this and other species many notes are added on relationships 

 and nomenclature; P. occultivenium, near P. rupestre Bl.; P. albido- 

 paleatum, near P. triquetrum Bl. ; P. ithycarpum; Cyclophorus bor- 

 neensis; Oreogrammilis Clemensiae nov. gen. nov. spec, differs from 

 Scleroglossum in the very essential feature of its strictly superficial, 

 or even slightly elevated sori; in its characters it Stands between 

 Scleroglossum and Polypodium, and possibly illustrated the origin 

 of the former; Scleroglossum angustissimum , an unmistakable 

 Scleroglossum, but with more the form and size of a Monogramma. 



Jongmans. 



Copeland, E. B., The genus Chrisliopleris. (Philippine Journ. Sc. 

 C. Bot. XII. p. 331—336. 1917.) 



This paper contains a review of the genus Christiopteris and of 

 the species belonging to it. As a new member of the genus is 

 proposed C. varians {Acrostichum varians Mett., Leptochilus varians 

 Fournier). There is a considerable number of ferns, all of which 

 can be regarded almost with certainty as descendants of a common 

 group less remote than their common ancestor with other Polypodia- 

 ceae. To this group Bower has given the name of Dipterideae, the 

 author prefers that of Matonieae. Different members of this group 

 have peculiar characters such as the tendency to dichotomy; 

 drynaroid venation; harsh hair-like paleae; thin, marginal walls of 

 paleae; reddish color of paleae; peculiar teeth on the paleae; round, 

 elongate or indefinite collections of sporangia not reaching the 

 margin; annulus of about 14 cells; bilateral spores; diplodesmic 

 venation beneath the hymenium; and a peculiar hypodermis under- 

 lying the upper epidermis. Different groups of species and of genera 

 have maintained different collections of these characters It seems 

 to the author, that the number of characters exhibited by Platy- 

 cerium, Cheiropleura, Christiopteris, Hymenolepis, Drymoglossum, 

 Cyclophorus, Photinopteris , Aglaomorpha, Mevinthosorus, Dendro- 

 conche, and the palaeotropic Polypodia with anastomosing veins, and 

 Dipteris, Matonia, and Phanerosorus amply justifies regarding these 

 as a group distinct from the other very large group of Polypodia- 

 ceae which are descendants of an old group now best represented 

 by Balantium, Dicksonia, Dennstaedtia, Cystodium, and Cyathea. 



Jongmans. 



Eseltine, G. P. van, The allies of Selaginella rupestris in the 

 southeastern United States. (Contr. U. S. Nat. Herb. XX. p. 

 159-172. pl. 15—22, textfigures 63-70. 1918.) 



Contains as new: Selaginella Riddellii and 5. humifusa. 



Trelease. 



Farwell, O. A., The genus Hippochaete in North'America, 

 north of Mexico. (Mem. N. Y. Bot. Gard. VI. p. 461—472. Aug. 

 31, 1916.) 



Contains as new: Hippochaete- ramosissima [Equisetum ramosis- 

 sitnum Desf.), H. hyemalis (E. hyemale L.), H. hyemalis califomica 

 (E. hyemale californicum Milde), H. hyemalis Jesupi (E. variegatum 

 Jesupi A. A. Eaton), H. hyemalis alaskana (E. variegatum alaskanum 

 A. A. Eaton), H. variegata (E. variegatum Schleich.), H. variegata 

 anceps (E. variegatum anceps Milde), H. scirpoides (E. scirpoides 



