Flora of North America species comparison

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Cyrtomium fortunei var. fortunei
Photo is of parent taxon
Stem

scales brown, ovate to lanceolate with attenuate apices.
Leaves

to 90 cm.
Pinnae

dark green and not shiny adaxially, (8–)10–25 pairs, lanceolate-attenuate, usually falcate, 5–9 cm, papery, sometimes with short, basal, acroscopic lobe, margins minutely crenulate-denticulate.
Indusia

pale brown to tan, thin, shriveled at maturity.
n

= 2n = 123, apogamous.

Cyrtomium fortunei var. fortunei
Habitat Brick or stone walls, clay banks, mesic ravines
Elevation 0–100 m (0–300 ft)
Distribution
from FNA
GA; LA; MS; OR; SC; Europe; Asia [Introduced in North America]
Discussion

Cyrtomium fortunei is native to east Asia and widely escaped from cultivation. Two other varieties, var. intermedium Tagawa and var. clivicola (Makino) Tagawa, occur in Asia. Cyrtomium caryotideum (Wallich ex Hooker & Greville) C. Presl is another commonly cultivated species of Asiatic holly fern. It is native in Hawaii, but it is not yet known to have become established outside of cultivation in the flora area. It is characterized by having only 3–5 pairs of pinnae, with finely and sharply serrulate margins.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Dryopteridaceae > Cyrtomium > Cyrtomium fortunei
Name authority J. Smith
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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