196 Pteridophyten. 



Allison, H. E., Note on the Vascular Connections of the 

 Sporocarp in Marsilia polycarpa, Hook. & Grev. (New Phvtol. 

 X. p. 204—206. pl. 3. 1911.) " 



In this species there are several sporocarps developed acrope- 

 tally and on one side of the petiole. The latter contains a V shaped 

 Strand; as the insertion of the sporocarp is approached one arm of 

 the V becomes slightly extended and is nipped off as the vascular 

 supply of the sporocarp, which thus originates marginally; the 

 petiolar bündle thus becomes once more V shaped. Higher up the 

 foliar bündle divides into three and subsequently into more nume- 

 rous bundles. The vascular supply of the leaflets also originates 

 from the margin of the petiolar bundles, so that the sporocarps 

 may be regarded as fertile lobes of the leaf. In Pteris semipinnata 

 Linn., which has pinnules only on one side of the pinna the vascu- 

 lar Strands of the pinnules depart from the margin of the pinna 

 Strand just as does that of the stalk of the sporocarp from the pe- 

 tiolar bündle in Marsilia. 



Isabel Browne (University College London). 



Benedict, R. C, Botrychiurn Jenmani in Cuba. (Amer. Fern 

 Journ. I, p. 98—99. July, 1911.) 



Botrychiurn Jenmani Underw., known hitherto only from 

 Jamaica, is now reported from the province of Oriente, Cuba, 

 upon specimens collected by J. A. Shafer. The relationship of 

 this species to the Jamaican species B. Underwoodianum is pointed 

 out, and the Statement is made that "these two species form one 

 of the several interesting pairs of Botrychiurn species, which occur 

 in widely separated regions, and include in each locality two forms 

 more or less alike in form and cutting but differing in the time of 

 fruiting." Three similar pairs are mentioned. Pedigree cullures 

 are suggested as the most promising means of determining the 

 Status of the various puzzling forms which are now recognized as 

 species. Maxon. 



Benedict, R. C, The genera of the Fern tribe Vittarieae: 

 Their external morphology, venation, and relation- 

 ship s. (Bull. Torrey bot. Club. XXXVIII. p. 153—190. pl. 2-8. 

 April, 1911; issued May 5, 1911). 



The author's conclusions are summarized as follows: 



"1. The Vittarieae represent a well-defined rather specialized 

 natural group of ferns probably related to the Pterideae and to the 

 Asplenieae. Seven genera are to be recognized, Monogramma Schk., 

 Hecistopteris J. Sm., Vittaria J. E. Smith, Polytaenium Desv. , Anan- 

 thacorus Underw. and Maxon, Anetium Splitg., and Antrophyum 

 Kaulf. 



"2. The genus Monogramma includes 2 species, M. dareicarpa 

 Hook, and M. graminea (Poir.) Schk., which seem to possess the 

 simplest leaf and stem structure known among vascular plants. 



"3. The 7 genera may be arranged according to their venation 

 patterns in a phylogenetic series beginning with Monogramma and 

 ending doubly, with Anetium on one hand, and with Antrophyum 

 on the other. 



"4. The more advanced genera show in their ontogeny succes- 

 sive venation stages similar to those noted in the phylogenetic series. 



