from the GNU version of the Collaborative International Dictionary of English
- n. any fern of the genus Aspidium, in which the fructifications are covered with shield-shaped indusia; -- called also wood fern. See Illust. of Indusium.
from The Century Dictionary and Cyclopedia
- n. Any fern of the genus Aspidium: so called from the form of the indusium of the fructification. The sori or fruit-dots are roundish and scattered or arranged in ranks; the indusia are solitary, roundly peltate or kidney-shaped, fixed by the middle or edge. For further characterization, see Aspidium.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori
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