Bryophyten. — Pteridophyten. 307 



Cana, province of Darien, Williams: and Stereophyllum Howei 

 Williams, from Taboga Island, Bay of Panama, Howe. 



Maxon. 



Williams, R. S., The genus Husnotiella Cardot, (The Bryolo- 

 gist. X\T. p. 25. March, 1913.) 

 Two Mexican species, Husnotiella revoluta Cardot, 1909, and 

 H. Palmeri Cardot, 1910, are regarded by Cardot as constituting 

 the genus Husnotiella Cardot, 1909, which on account of the sup- 

 posed absence of a peristome has been compared with Gyroweisia. 

 The writer finds, however, that there exists a more or less well 

 developed peristome, "consisting of a rather delicate membrane 

 scarcely projecting above the rim of the capsule and often bearing 

 irregulär teeth extending to a little above the more or less persistent 

 annulus." He therefore regards Husnotiella as referable to Didymo- 

 äon. The two species described by Cardot are regarded as consti- 

 tuting a Single species: D. revolutus (Cardot) R. S. Williams {H. 

 revoluta Cardot). Maxon. 



Pfeiffer, N. E., Abnormalities in prothallia of Pteris longi- 

 folia. (Botanical Gazette. Vol. LIII. p. 436—438. figs. 4. 1912.) 

 In archegonia of Polypodiaceae one expects to find one egg, a 

 ventral canal cell, and two neck canal nuclei not seperated by any 

 wall. In addition to normal prothallia of this type, Pteris longifolia 

 showed archegonia with two eggs and two ventral canal cells; with 

 four neck canal nuclei, not separated by walls; and two definite 

 neck canal cells. In one case, the basal cell of an antheridium, as 

 well as the central cell, gave rise to sperms. In one case, also, the 

 embryo appeared to be apogamous. 



Charles J. Chamberlain (Chicago). 



Robinson, "W. J., A taxonomic study of the pteridophyta of 

 the Hawaiian Islands. III. (Bull. Torrey Bot. Club. XL. p. 193— 

 228. pl. 9—12. May 20, 1913.) 



In the present paper, which is the third of the series, the fol- 

 lowing genera are treated: Polypodium, Phymatodes, Phlebodium, 

 Polystichum, Tectaria, Cyrtomium, Aspleniiun, Neottopteris, Athyrium, 

 Diplasium, Sadleria and Doodia. The following species are described 

 as new: Polypodium pumilum W. J. Robinson, the type specimens from 

 Oahu, related to P. Knudsenii Hieron., Asplenium glahratum W. J. 

 Robinson, from Oahu, related to A. horridum Kaulf. The following 

 new names and new "combinations" appear: Cyrtomium Boydiae 

 (D. C. Eaton) W. J. Robinson {Aspidium Boydiae D. C. Eaton), Tec- 

 taria cicutaria (L.) W J. Robinson [Polypodium cicutarium L.), As- 

 plenium kauaiense (Hilleb.) W. J. Robinson {Asplenium Mannii var. 

 kauaiense Hilleb), A. Goldmannii \Jx\dervf. {Asplenium polyphylliim 

 Hilleb. not Bert.), A. rhipidoneuron W. J. Robinson {Asplenium für - 

 catum Hilleb. not Thunb.); Diplasium molokaiense W. J. Robinson 

 {Asplenium arboreum Hilleb. not Willd.), Sadleria Hillebrandii W.J, 

 Robinson {Sadleria pallida Hilleb. not. Hook.), 5. unisora (Baker) 

 W. J. Robinson {Polypodium unisorum Baker). Maxon. 



Slosson, M., New ferns from tropical America. II. (Bull. 



