Flora of Pennsylvania
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Contributors
Fern Allies
Fern Allies
Equisetaceae
horsetail family
Equisetum
horsetail
E. arvense
field horsetail
E. fluviatile
water horsetail
E. hyemale
scouring-rush
Huperziaceae
firmoss family
Huperzia
firmoss
H. lucidula
shining firmoss
Lycopodiaceae
clubmoss family
Dendrolycopodium
tree clubmoss
D. dendroideum
prickly tree clubmoss
D. obscurum
princess pine
Diphasiastrum
ground cedar
D. digitatum
southern ground cedar
D. tristachyum
blue ground cedar
Lycopodium
clubmoss
L. clavatum
common clubmoss
Spinulum
interrupted clubmoss
S. annotinum
bristly clubmoss
Ophioglossaceae
adder's tongue family
Botrychium
moonwort
B. angustisegmentum
lanceleaf moonwort
B. matricariifolium
daisy-leaved moonwort
Botrypus
rattlesnake fern
B. virginianus
rattlesnake fern
Sceptridium
grape fern
S. dissectum
cut-leaved grape fern
S. oneidense
blunt-lobed grape fern
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