genus pteridium Definition

pteridium, bracken, brake, abutilon, acer, agave, aloe, amanita, ambrosia, amelanchier, annona, anopheles, caladium, hibiscus, aesculus, agapanthus, amaranthus, amphiprion, anodonta, anser, culcita dubia, false bracken, albicans, abalone, abelmoschus, aberrant, abies, abt, acacia, acanthurus, acanthus, acarus, accentor, accipiter, acetabulum, acetobacter, ach, acinos, acipenser, acme, aconite, aconitum, acorn worm, acorus, acroclinium, actinia, actinidia, actinotrocha, ada, adansonia, adder, adelges, adelgid, adiantum, adonis, agama, agamidae, agapornis, agar, agaric, agaricus, agastache, agdestis, ageratum, aggregation, agonus, agouti, agouty, agrimony, agropyron, agrostis, alabama, alauda, albatross, albugo, albula, alca, alcedo, alcyonium, alder, alder fly, alewife, alexanders, aleyrodes, alisanders, alligator, allium, almond, alocasia, alopius, alosa pseudoharengus, alsophila, alyssum, amaranth, amaryllis, amazon, ambystoma, ameba, ameiurus, amia,