OPHIOGLOSSUM IN PENNSYLVANIA 117 
was little, if any, larger than the typical form, was found 
in the upper Arroyo Seco. 
Thelypteris arguta (Kaulf.) Moxley. Common through- 
out the chaparral belt on shaded and rocky slopes, 
mostly below 900 m. 
Woodwardia Chamissoi Brack. Frequent in all the 
canyons in wet, shady places below 1200 m. : 
Adiantum Capillus-veneris L. Occasional on shaded 
dripping cliffs in the lower Arroyo Seco. 
Pteridium aquilinum pubescens Underw. A low form 
of this was common on Pine Flats, at an elevation of 
about 1650 m. It has been somewhat interesting to 
note that this plant is quite dwarfed at high elevations. 
Whereas below 300 m. it is frequently as much as two 
meters high, at this station it is hardly more than six dm. 
Pellaea andromedaefolia Fée. Common on rocky 
hillsides. 
P. mucronata D. C. Eaton. Common on dry hillsides. 
Cheilanthes Coville’ Maxon. Frequent in shaded 
clefts of the rocks. We were surprised to find this at a 
much lower elevation than usual, in the Trail Fork of the 
San Gabriel. are : 
Cheilanthes californica (Nutt.) Mett. Common in 
shady places in the chaparral zone. ; 
Polypodium californicum Kaulf. Common on shade 
rocky banks. : 
so or more species of Equisetum were noticed, but 
we did not collect them nor try to determine their 
identity. 
Sclaginella Bigelovii Underw. Common among ey 
and on dry slopes.—GrorGE L. Moxuzy, Los ANGELES, 
CaLir. 
GOMERY 
OPHIOGLOSSUM VULGATUM IN BUCKS AND Mont 
Countizs, Pa—I never forget the time _ ; ae 
found Ophioglossum vulgatum. It was vd ae been 
pleasant occasions when one finds what he has 
