— ^97 — 



This species is especially well-marked by its scandent rhizome, which 

 bears the leaves on its top, this being densely clothed with a tuft of 

 long, red-brown, linear-subulate, ciliated scales. But as my description 

 above and the figures should show, the species is also easily recognizable 

 by its venation, characterizised, as it is, by the numerous free veinlets 

 included in the aréoles, formed by the tertiary, radial veins, the majority 

 of which veiy often do not reach the next cross-vein. Sometimes the 

 venation is that of the genus Campium of Presl, see fig. 8Ô. — The 

 locality Mexico for L. ser rati folius, recorded in Hk. Bak. Syn., is surely 

 to be referred to this species. 



Specimens examined : 



Mexico: Vallée de Cordova, Bourgeau n. 2008: Heteroneuron serra- 

 tifolium Fournier, Plant. Mexic. 1 : 69 (HH, HB). 



Guatemala: Inter Escamillas et Palohucco, Costa Grande, ad 

 arbores scandens, Bernoulli et Carlo n. 382 (type specimen: HB, Herb. 

 H. Christ, Bale.). 



Costa Rica: Rio Naranjo, aöO^^i, Tonduz (Herb. H. Christ, Bale.). 



F'ig. 8 a. Pinna of the type specimen, ^/é nat. size. — Fig. 8 />. Pinna 

 of Bourgeau's plant, ^/i nat. size. 



Besides these 8 species thus described, in the literature two 

 more are mentioned as South- American, viz: 



1. Poecilopteris crenata Presl, Epim, bot. 174. 1849. — Rio. 

 After a remark on a sheet in Herb. Berol. (by Mettenius?) and 

 after the description this is only a common form of L. ser rat i folius. 



2. Poecilopteris lohulosa Presl, 1. c. — Guatemala. The author 

 has known only a fertile frond with lobed pinnæ. It is, probably, 

 not a true Bolbitis, rather a near ally of L. alienus. A very 

 doubtful species, unknown to me and, as it seems, to all pterido- 

 logists. 



Copenhagen June 1. 1904. 



