1896.] Filices Mexicane. 257 
Mr. Pringle says of this fern that ‘‘it was growing in a 
peculiar situation, in curious pockets on the face of a cliff of 
lime rock. I could find no other station, so it must be rare, 
and may have escaped the notice of earlier explorers of that 
much traveled region.” 
Nephrodium strigilosum, Dryopteris strigilosa, or Lastrea 
sirigilosa may serve as synonyms for those who reject Aspid- 
ium as defined by Swartz. 
ASPLENIUM CICUTARIUM Swartz. 
6094, mossy calcareous ledges, barranca near Orizaba, 
4,000", Jan. 21, 1895. 
ASPLENIUM ERECTUM Bory, var. PROLIFERUM Hook. 
$601, Sierra de San F elipe, 8,000%, May 22, 1894. 
Asplenium fibriHosum Pringle & Davenport, n. sp. Plate 
XVIII, figs. 1-4. 
Plant small, 2 to 6" high: rootstocks tufted, erect or decum- 
bent, clothed with blackish brown fibrils: fronds linear, § to 
co as deep, deeply and obtusely crenate, and varying 
bs Sub-dimidiate to rhomboidal; texture suib-coriaceous, 
“'s pinnate, sori oblique to the center, usually 2 to 5 toa 
hit might be mistaken without a careful examina- 
It differs from that species by its fibrillose vestiture and 
a indusia. The former may not always prove to a 
and ON find that in my largest and oldest frond os ae: 
iture 's have become quite smooth, thus showing the : 
® be deciduous. The ciliated indusia, however, apPe@ 
Persistent and thus constitute a permanent character. 
