Notes ON AMERICAN FreRNS—XIV 71 
ovate, subpentagonal, acute, 5-15 cm. long, 4-11 ¢ 
broad, 4—5-pinnate, the rachises blackish, delicate, the 
minor ones almost capillary; pinnae about 6 pairs, 
slightly ascending, subopposite, long-stalked, deltoid, 
contiguous; basal pinnae much the largest, about half 
as long as the blade, conspicuously long-stalked, sub- 
ternate, with the basal pinnules long-stalked, subternate, 
deltoid, the other pinnules smaller, less decompound 
and with shorter stalks; ultimate segments sessile or 
nearly so, mostly 2-3 mm. long, linear-oblong, appearing 
slightly broadest at the obliquely truncate or subcordate, 
inequilateral base, or at maturity often broadly oblong 
or bluntly ovate-oblong by the thrusting back of the 
widely revolute margin, the segments thus often plane; 
under surfaces thickly but flocculently whitish-ceraceous; 
sporangia numerous, extending at least half the length 
of the veinlets from their tip, only partially concealed 
at any stage. Leaf tissue spongiose-herbaceous, glau- 
cous above. - 
Type in the U. 8. National Herbarium, No. 736532, 
collected on Tortugas Mountain, southeast o, Las Cruces, 
Dona Ana County, New Mexico, altitude about 1,400 
meters, Sept. 14, 1902, by E. O. Wooton. Tortugas 
Mountain, sometimes called also Little Mountain, is 
an isolated limestone mass rising rather abruptly from 
the mesa which lies west of the Organ Mountains toward 
the Rio Grande. The following additional specimens 
are in the National Herbarium: 
New Mexico: Tortugas Mountain, Oct. 14, 1893, 
Wooton; July, 1906, Wooton & Stand'ey; Aug. 12, 1906, 
Wooton & Standley. Mogollon Mountains, alt. 2,400 
meters, Metcalfe 1003. 
Arizona: Hand’s Trail, Chiricahua Mountains, alt. 
2,100 meters, Blumer 1526. Dragoon Mountains, G. R. 
Vasey 6. Nogales, W. Palmer 1206; Evermann. Near 
Portal, Cochise County, in the Chiricahua National 
