Underwood : American ferns 201 



Jamaica, and it has been brought in several times from the Ba- 

 hamas. 



HYMENOPHYLLACEAE 



Didymoglossum * sphenoides (Kunze) Presl, Hymenoph. 23. 

 1843. 



Trichomanes sphenoides Kunze, Linnaea 9: 102. 1835; Die 

 Farnkr. 1 : 215. //. 88. f. 2. 1846. (Type from Peru, Poeppig.) 



Florida : Between Cutler and Longview Camp, 1903, Small 

 & Carter 1478. This species was reported by A. A. Eaton under 

 Trichomanes (cf. Fern Bull. 12 : 47). It is a common lowland 

 species of tropical America. 



Didymoglossum * Krausii (H. & G.) Presl, Hymenoph. 23. 

 1843. 



Trichomanes Krausii H. & G. Icon. Fil. pi. 149. 183 1. 

 (Type from Dominica, Krafts.) 



Florida: Between Cutler and Longview Camp, 1903, Small 



Tjoo. Also reported by Mr. A. A. Eaton under 



& 



& 



EOUISETACEAE 



Equisetum Funstoni A. A. Eaton, Fern. Bull. 11 : 10. 1903. 

 (Type from San Bernardino, Southern California, Coville & 



Fun st on ij 



Southern California : Not very well represented in our her- 

 baria, but a number of sheets are found in the collection at Wash- 

 ington. 



Species inquire n da 



Eqtiisetum FerrisU Clute, Fern. Bull. 12 : 22. 1904. (Type from 



Joliet, Illinois, Clutch) 



Not seen ; judging from characters given, a very doubtful spe- 

 cies described entirely from sterile material. 



*The genus Didymoglossum was established by Desvaux (Ann. Soc. Linn. Paris 

 6 - 330. 1827), and differs from typical Trichomanes in the possession of a distinctly 

 bilabiate involucre which is contracted below the mouth and bordered by the tissues of 

 the leaf. It has been adopted by all the writers who have seriously monographed the 

 filmy ferns since the time of Desvaux. 



