108 — AMERICAN FERN JOURNAL 
Proceeding upon this basis I find that Underwood’s 
list shows 24 species in the immediate vicinity of 
Scolopendrium Lake and 29 included by extending 
the area under consideration to a diameter of three miles. 
Three species not mentioned in Dr. Underwood’s 
article were listed at the field meeting of the American 
Fern Society in 1915, making 32 species for the whole 
Green Lakes region. Mrs.-Terry named 34 species 
within walking distance of Dorset; Miss Slosson also 
gives 34 for Pittsford, and the Willoughby list has 35. 
Twenty-seven species are common to all. four local- 
ities, Polypodium vulgare, Adiantum pedatum, Pteridium 
latiusculum,  Cryptogramma Stelleri, | Camptosorus 
rhizophyllus, Asplenium Trichomanes, A. Ruta-muraria, 
Athyrium acrostichoides, A. Filix-femina, Phegopteris 
Dryopteris, Dryopteris Thelypteris, D. noveboracensis, D. 
cristata, D. Clintoniana, D. spinulosa, D. intermedia, D. 
Goldiana, D. marginalis. Polystichum acrostichoides, 
Cystopteris bulbifera, C. fragilis, Dicksonia punctilobula, 
Onoclea sensibilis, Pteretis nodulosa, Osmunda regalis, O. 
cinnamomea, O.Claytoniana. 
Scolopendrium vulgare is the particular prize of the 
Green Lakes region. Phegopteris hexagonoptera, 
which is not reported from either of the Vermont 
stations, is included in Underwood’s list but was not 
found by the Fern Society members in 1915. Dorset 
has Polystichum Braunii while Pittsford has Pellaea 
atropurpurea, otherwise the lists for these localities 
are practically identical. Willoughby has both these 
species and, thanks to its boreal conditions, three 
species not found in any of the other localities, Asple- 
nium viride, Woodsia alpina and W. glabella. All but 
Willoughby have Asplenium platyneuron and Athyrium 
angustifolium and these might be added to the Wil- 
loughby list by extending the area to a length of fifteen 
miles or so. There are four other species which are 
found in two or more of the stations. 
