296 
The Ohio Naturalist, 
[Vol. V, No. 5, 
mentioned here. Nephrolepis exaltata, a cultivated species, 
sends out runners, which often take root at the end and thus form 
a new plant. 
Only two of our Pteridophytes are annuals, Selaginella a])us 
and Azolla caroliniana. The rest are perennial; of these a large 
number are evergreen, the aerial portion persisting and remaining 
green throughout the winter. 
Pteridophvtes which belong to 
Polvpodium vulgare. 
“ polypodioides. 
Pellaea atropurpurea. 
Asplenium pinnatitidum. 
“ ebenoides. 
" platyneuron. 
“ trichomanes. 
ruta-muraria. 
“ montanum. 
Camptosorus rhizophyllus. 
Polystichum acrostichoides. 
Dryopteris cristata. 
" ‘‘ clintoniana. 
■' marginalis. 
“ spinulosa. 
The following list includes the 
the evergreen class: 
Dryoptei'is spinulosa intermedia 
dilatata. 
Woodsia obtusa. 
Equisetum robustum. 
hyemale. 
“ Ijevigatum. 
" variegatum. 
scirpoides. 
Lycopodium lucidulum. 
“ inundatum. 
obscurum. 
“ annotnium. 
“ clavatum. 
" complanatum. 
Selag'nella rupestris. 
Classifying the Ohio Pteridophytes according to habitat, we 
have the following list: 
1 . Those growing in wet marshes or swamps with or without 
abundant shade. 
Botrychium matricaritefolium. 
lanceolatum. 
Osmund a cinnamomea. 
regalis. 
“ claytoniana. 
Woodwardia virginica. 
Dryopetris noveboracensis. 
" cristata. 
" spinulosa intermedia. 
“ “ dilatata. 
2. Those growing on the 
more or less moist: 
Ophioglossum vulgatum. 
Botrychium matricarisfolium. 
" lanceolatum. 
Adiantum pedatum. 
Asplenium platyneuron. 
.\thyrium thelypteris. 
“ filix-foemina. 
Dryopteris noveboracensis. 
“ goldieana. 
“ marginalis. 
" spinulosa. 
o. Those growing in moist 
Botrychium virginianum. 
Woodsia obtusa. 
Filix bulbifera. 
fragilis. 
[round in rich woods and thickets 
Phegopteris phegopteris. 
“ hexagonoptera. 
“ dryopteris. 
Filix fragilis. 
Woodsia obtusa. 
Equisetum scirpoides. 
Lycopodium lucidulum. 
“ obscurum. 
annotinum. 
“ clavatum. 
“ complanatum. 
rocky ravines or rocky places are : 
Dryopteris marginalis. 
Asplenium angustifolium. 
Phegopteris phegopteris. 
dryopteris. 
