alternation of generations
autotrophic
conservation
fertile pinnae
food chain
green
interrupted fern
leaves
meiosis
mount sunapee state park
nature
new england
new hampshire
newbury
nobody
northeast
osmunda
outdoors
photosynthetic
preservation
primary producer
pteridophyte
reserve
sexual reproduction
sori
sporangia
spore production
sporic life cycle
sporophyte
trophic pyramid
usa
vascular plant
vertical