Vol. 41 No. 8 
BULLETIN 
OF THE 
TORREY BOTAN ICAL CLUB 
AUGUST, 1914 
A revision of the genus Vittaria J, E, Smith 
I. THE SPECIES OF THE SUBGENUS RADIOVITTARIA 
(WITH PLATES I5-20 AND SEVEN TEXT FIGURES) 
RatpH C. BENEDICT 
In an earlier paper on the genera of the fern tribe Vittarieae* 
the writer endeavored to point out the natural generic and 
subgeneric groups of the tribe, to discuss as well some of the 
interesting morphological features, and to indicate also the prob- 
able relationships of the genera. The present paper deals 
with the species of one of the subgenera of Vittaria indicated in 
the earlier paper. Most of the work of which the results are 
presented here was done before the paper on the genera was 
published, but completion was delayed until the present. As 
indicated by the title of this article, it is intended to continue the 
study of the species of Vittaria, and it may be added, most of the 
necessary work has been accomplished. 
The genus Vittaria as delimited in the writer’s paper already 
cited includes all those species of the tribe Vittarieae which have a 
midvein with uniseriate lateral areolae along each side formed 
by the pinnate interlocking simple veinlets. (See Fics. 1-3; 
also the illustrations of venation under each plate.) As it appears, 
this type of venation is practically unique among ferns, the only 
possible exceptions being two or three species in the genus Poly- 
podium L., as used in a broad sense. From such species as these 
the species of Vittaria differ largely not only in general aspect, 
a Bull. Torrey Club 38: 153-190. pl. 2-8. I91t 
{The BuLteEtIN for July (41: 351-390. pl. iy was issued 28 J! 1914.] 
391 
