11 - Polypodiaceae
from Division 3 - Polypodiophyta
Summary
Plants homosporous. Sporangia thin-walled, elastically dehiscent, with a well-developed annulus, borne on vegetative or more or less modified fronds, but not enclosed in a sporocarp. Terrestrial, epiphytic or occasionally aquatic.
POLYPODIACEAE Bercht. & J. Presl
Perennial herbs with scaly rhizomes. Fronds borne singly along rhizome, spirally coiled when young, of one kind, 1-pinnate to simple, but very deeply pinnately lobed; lobes or pinnae linear, entire to shallowly serrate. Sori subrotund to elliptical on underside of frond; Indusia absent. Plants homosporous. Gametophyte green, surface-living.
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- Flora of Great Britain and Ireland , pp. 21 - 23Publisher: Cambridge University PressPrint publication year: 2018