Gardneriane. N. O. Filices. 
TAB. DIII. 
ADIANTUM FILIFORME. Gardn. 
Frondibus pinnatis, pinnis distantibus glabris subdimidiatis basi 
cuneatis fertilibus apice incisis, laciniis integris, sterilibus 
spinuloso-dentatis, indusiis leevibus, rachi glabra apice elongata 
nuda demum radicante. 
Adiantum filiforme. Gardn. Herb. Bras. n. 2391. 
Has. In shady clefts of sandstone rocks near the city of 
Oeiras, Province of Piauhy, Brazil. April 1839. 
Frondes fasciculate. Stipes os atropurpureus, teres, 
nitidus, subpaleaceus. Rachis teres, filiformis, glabra, nitida, 
apice elongata, nuda, eee aie demum radicante. rons 
6-8-pollicaris, pinnata. Pinne distantes, 4-5 lin. longe, 
alterne, petiolate, obovate, subdimidiate, basi cuneate, apice 
vel incise laciniis integris soriferis, vel spinuloso-dentate 
laciniis sterilibus. Vene flabellate, pluries furcate, venulis 
parallelis. Sori marginales, subrotundi. Indusia subrotunda, 
membranacea, glabra.—G. Gardner 
Fig. 1. Fertile pinna oa 
