84 AMERICAN FERN JOURNAL 
the rare hybrid Asplenium trichomanes x ruta-muraria 
ischerson, a single plant of which was found Aug. 29, 
1905, in Proctor, Vermont, by the late Miss G. A. Wool- 
son. This is the only time on record when this fern has 
been found in America. The late Mr. George Daven- 
port, in describing this fern in Rhodora, January 1906, 
states that the American specimens differ slightly from 
__ the described European forms in that the “lower pinnae 
_ are more deeply lobed or even divided.”” Now why 
_ should not others find this rare fern among the rocky 
pockets of western Vermont where both the parent 
= plants are common? Miss Woolson, who discovered this 
os — = os Vermont ferns, was also very successful in 
plenium ebenoides Scott in Vermont. She 
a found fe hybrid at Proctor and at Pittsford. It was 
. first reported from Vermont in 1897, when it was dis- 
covered at Rutland by Mr. G. H. Ross. The only other 
Vermont stations are Salisbury and Brandon, the latter 
station discovered recently by Mr. D. Lewis Dutton. 
_ Vermonters living east of the Green Mountains can 
8 hardly hope to find this hybrid (now recognized as such, 
a due to the ‘study of Miss Margaret Slosson) as ~ of 
_ the parent Plants, Camptosorus rhizophyllus (L.) Link 
a the walking fern, has been reported, I believe, from pa : 
D tes — east: of the Green Mountains: Brattleboro, 
ea 
- largely to. the absence of limestone ledges. a 
of these stations, save the one near West Brattleboro, a 
small and the Windsor locality has been lost. In 
= wich station, located on the ‘Loveland farm, — 
which T have been fortunate enough to visit now and 
here is ~ a handful of plants. Well do I re- 
af , ich I discovered the 
t 
