118 Rhodora [JuLy 
Catalina Isl., “common in canons" Avalon, June 2, 1895, Trask 
(N); dry hillsides, March 29, 1900, Grant, 122 (S); Apr. 21-24, 
1904 (S); 1885, W. S. Lyon (G). 
Nuttall’s material of Gymnogramme viscosa in the Herbarium of 
the Philadelphia Academy consists of two small detached fronds 
about 5 em. long, with the characteristic habit of extreme var. vis- 
cosa and without glands on the viscid upper surface of the lamina. 
The specimen of G. pyramidalis is a single large frond, 10 cm. long, 
again with the characteristic viscosa habit and with stalked glands 
plainly apparent on what little of the upper surface shows. Under- 
wood’s statement, l. c. 630, that one of Nuttall’s Oregon specimens 
was labelled by him * *viscosa" indicates an error somewhere. Var. 
viscosa is a very local plant, known only from southwestern Cali- 
fornia. 
Var. viscosa varies considerably in leaf-form. The extreme and 
most characteristic form figured by Eaton has rather distant pinnae 
and comparatively few, likewise distant, segments. But both pinnae 
and segments may be as close and the latter as numerous as in the 
typical form of the species, thus constituting a transition to it, so 
far as these characters are concerned. The most remarkable varia- 
tion in this direction is found in specimens collected at San Diego 
by D. Cleveland (Y) and at San Miguel Mt., near National City 
by Miss Laura F. Kimball in 1900 (N). These have very large 
fronds (14 cm. long) with viscid upper surface and white indument, 
but tripinnatifid, with numerous segments and the lower basal pin- 
nules very large and deeply pinnatifid. Their appearance is alto- 
gether that of luxuriant states of typical P. triangularis. Specimens 
collected by Blanche Trask at Avalon, Santa Catalina Island (N) 
have the characteristic habit of var. viscosa, but the upper surface 
of the lamina glabrous, and in this respect are transitional to the 
typical form. The fronds in these specimens are young; but in all 
other specimens of var. viscosa seen, the fronds even when very young 
are strongly viscid. Collins & Kempton 88 from the Otay Mesa, San 
Diego, May 14, 1915 (N) has the thick frond and general habit of 
var. viscosa, but the upper surface of the lamina is densely glandular 
and not at all viscid and the spores are somewhat trilobate. In 
these respects, it is transitional to var. Mazoni. In some 
specimens, every distinctive character of var. viscosa breaks down in 
