﻿Slosson: Notes on Trichomanes 655 



forest, Sierra de Onaca, 1 070-1 930 m. alt., H. H. Smith 2443, 



Bolivia: San Juan, 11 61 m. alt., R. S. Williams 1207. 



Africa: Perie-Wald, Capland, 600 m. alt., 0. Kuntze. 



The question now comes up, what is Hedwig's plant? The 

 earliest name for this that I have been able to fix upon so far with 

 any degree of certainty is Trichomanes hymenophylloides, the 

 name given by Van den Bosch in 1863 to his T. leptophyllum* 

 which is a homonym of T. leptophyllum A. Cunningham. Van 

 den Bosch's publication of his T. leptophyllum reads as follows: 

 "r. leptophyllum. T. pyxidiferum. Hook. & Grev. tab. 206; 

 Hook. sp. hi. I, p. 121 (fide specim.) 



"Hab. St. Vincent! Martinique! Guadeloupe! Jamaica! 

 St. Domingo! Cuba!"t 



Hooker and Greville's plate 206 and the long and careful accom- 

 panying description are based on specimens from St. Vincent, 

 collected by the Rev. L. Guilding. These specimens I have not 

 seen, but the plate and description agree well with a large series of 

 specimens from St. Vincent and other parts of tropical America. 

 These specimens in turn connect this plate with that of Hedwig's, 

 which represents a less mature and more contracted leaf-state of 

 the plant than Hooker and Greville's. 



Both plates are reproduced in part on Plate 31 of this paper, 

 together with photographs of leaves of specimens from Santo 

 Domingo and Jamaica. 



It is scarcely necessary to reprint here Hooker & Greville's 

 description. The essential points of it, the characteristics by 

 which the plant differs from the plant I refer to true T. pyxidiferum, 

 will be seen on Plate 31. These are: the more slender almost 

 delicate character of the leaf; the straighter more slender rachis; 

 and, most conspicuously, the shape of the indusium. This, 

 instead of being short and broad, has a long slender tube and a 

 suddenly flaring mouth. The amount of leaf-tissue on either side 

 of this indusium varies, even in the same leaf, as will be seen from 

 Fig. 4. It is considerably greater in Hooker & Greville's figure 

 than in Hedwig's, as might be expected from a figure representing, 

 as has already been stated, a much more mature and luxuriant 



