BULLETIN 
OF THE 
TORREY BOTANICAL CLUB 
Vol. X.l New York, June, 1883. [No. 6. 
A New Fern. 
By George E. Davenport. 
(Plate xxxiv.) 
Cheii.anthes Pringlei, n. sp. — Rootstock slender, creeping, ^ 
clothecl with linear-lanceolate, acuminated brown scales with darker 
midnerves ; stipites i^ to \^ long, reddish or chestnut-brown, fur- 
rowed along the face, clothed at the base with scales similar to those 
on the rhizoraa, but lighter, less acuminate and oftener without mid- 
nerve, above sparingly with paler deciduous scales and chaff ; lam- 
inae i' to 2^^' long, nearly as broad, triangular or irregularly deltoid 
or ovate-deltoid, bi- to tripinnately divided into S to 7 pairs of oppo- 
site and spreading — in the smaller and sterile fronds — or, in the 
larger and fertile ones, alternate erecto patent pinnaj, lovyest pair 
distant, sometimes shorter than the next, apex deeply pinnatifid, 
obtuse.' both surfaces naked, dark green, rachises beneath clothed 
with light, nearly transparent— whitish brown becommg darker 
with age— ovate or linear-lanceolate scales with entire or sparingly 
toothed margins, those of the main rachis the narrowest ; pinnae | to 
4' long, lower unequally deltoid or ovate, obtuse, bipmnate, ob- 
liquely and pinnatifidly cleft toward the apex, uppermost oblong, 
pinnate or deeply pinnatifid ; pinnules \' to f long, the lower series 
usually the longest, ovate or oblong, obtuse, pinnately divided, or 
deeply cleft into cuneate-ovate or obovate, oblique segments which 
are again deeply cleft into c'uneate, strap-shaped divisions, those of 
the largest segments again deeply cut into narrow, obtuse or blunt, 
cuneate lobes, the recurved tips in the fertile fronds forming distinct 
herbaceous involucres with entire or slightly crenulate margins ; son 
one to each ultimate lobe on the apex of a free veinlet ; sporangia 
few, light brown, with about 18 rings. Spores light colored. 
Habitat. Base of rocks, mountains of South-eastern Arizona. 
Collected by Mr. C G. Pringle, May 2d, 1883. 
I take pleasure in dedicating this beautiful fern to my friend 
Pringle, to whom I am under many obligations. Its delicately cut 
fronds, exquisite grace and loveliness suggest to my mind something 
of the refined tone and delicacy of its discoverer's own nature, and 
this dedication therefore seems to me doubly appropriate. The 
species is one of the most distinct and satisfactory that has been dis- 
covered for a long time, and is wholly unlike sny known to our flora 
or heretofore described. The true form of the frond appears to be 
triangular, or at least the tendency is toward that form,_ although in. 
some fronds the greatest breadth is across the second pair of pinnae, 
as seen in those drawn by the artist, and, while the lower series of 
