Argyrochosma limitanea subsp. mexicana

(Maxon) Windham

Contr. Univ. Michigan Herb. 19: 32. 1993.

Basionym: Notholaena limitanea subsp. mexicana Maxon Amer. Fern J. 9: 72. 1919
Synonyms: Notholaena limitanea var. mexicana (Maxon) M. Broun
Treatment appears in FNA Volume 2.

Leaf-blade lanceolate to oblong, 3–4-pinnate, proximal pinnae 1/4–1/3 as long as blades. n = 2n = 81, apogamous.


Phenology: Sporulating summer–fall.
Habitat: Rocky slopes and cliffs, usually on calcareous or volcanic substrates
Elevation: 1700–2500 m

Distribution

V2 565-distribution-map.gif

Ariz., N.Mex., Tex., n Mexico

Discussion

Selected References

None.

Lower Taxa

None.
Michael D. Windham +
(Maxon) Windham +
cordate +
Notholaena limitanea subsp. mexicana +
glandular +  and glabrous +
lanceolate +  and deltate +
Ariz. +, N.Mex. +, Tex. +  and n Mexico +
1700–2500 m +
obcordate;reniform +
Rocky slopes and cliffs, usually on calcareous or volcanic substrates +
monomorphic +
recurved +  and reflexed +
noncircinate +  and circinate +
5 cm50 mm <br />0.05 m <br /> (30 cm300 mm <br />0.3 m <br />) +
reddish-brown;black +
flattened +  and rounded +
Sporulating summer–fall. +
straight +  and slightly flexuous +
Contr. Univ. Michigan Herb. +
flexuous +  and straight +
rounded +  and slightly flattened +
concolored;black;tan;brown +
persistent +
subulate +  and narrowly lanceolate +
tetrahedral-globose +
dark colored +
erect +  and ascending +
Notholaena limitanea var. mexicana +
Argyrochosma limitanea subsp. mexicana +
Argyrochosma limitanea +
subspecies +
0 cm0 mm <br />0 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
crescent--shaped +  and roundish +