_Trichómanes Boschiànum. Trichómanes rádicans_
Rootstocks creeping, filiform, stipes ascending, one to three inches
long, thin, very delicate, pellucid, much divided, oblong-lanceolate,
bipinnatifid. Rachis narrowly winged. Sporangia clustered around the
slender bristle, which is the prolongation of a vein, and surrounded by a
vase-like, slightly two-lipped involucre.
On moist, dripping sandstone cliffs, Kentucky to Alabama. Often called the
"Killarney fern," as it grows about the lakes of Killarney in Ireland.
[Illustration: Fruiting Pinnules of Filmy Fern (From Waters's "Ferns."
Henry Holt & Co.)]
[Illustration: Ostrich Fern]
[Illustration: Cinnamon Fern]
[Illustration: Marginal Shield Fern]
[Illustration: Lady Fern Crosiers]
[Illustration: Fiddleheads or Crosiers of Christmas Fern]