A new Elaphoglossum from Brazil 



Carl Christensen. 



In the pretty collection of Brazilian ferns from Dr. Glazioii 

 (Herb, Warming, now in the Botanical Museum of Copenhagen) I 

 have found a little Elaphoglossum, apparently new to science. It 

 belongs to Condyloneura subsectio Sefosa of Christ, the mono- 

 grapher of this genus, and stands near to small forms of E. villosum. 

 It is, however, a new and very peculiar species, remarkable by its 

 sterile leaves being proliferous. Only one proliferous sjiecies of 

 Elaphoglossiim [E. undulatum (Willd.) Moore) is hitherto known ; 

 it bears a squamose bud at the apex of the midrib but produces 

 rarely or never small plants. The new species, here described, 

 bears a similar squamose bud on the costa at the emarginated 

 apex of the sterile frond, and this bud very often produces one 

 or two small leaves. Otherwise the little plant is remarkable by 

 its very thin texture. Held to the eye the parenchyma of the leaf 

 is transparent, and with the aid of a lense the cells are clearly 

 visible, nearly as in a species of Trichonianes § Didymoglossum. 

 Thence I name the species: 



Elaphog-lossum didymoglossoides n. sp. 



Planta pusilki, cæspitosa, rhizomate erecto, squamoso, foliis 

 dimorphis: sterilibus oblongis, translucentibus apicibus proliferis, 

 fertilibus minimis suborbicularibus. 



Bhizonia parvum, erectum, squamis rufis, lineari-subulatis, sub- 

 dentatis, 1 """ longis dense vestitum. Folia sterilia cum petiolis 

 2_4cm longa, longe petiolata. Petiolus gracilis, ad 2<:™ longus, 

 squamis rufo-brunneis, linearibus, patentibus dense instructus, denique 

 denudatus. Lamina ovato-oblonga , 1 — 2 Vs*^™ longa, 5 — 8™"Mata, 

 membranacea, tenuissima, translucens, ad basin breviter cuneata, 



