Cheilanthes wrightii

Hooker

Sp. Fil. 2: 87, plate 110, fig. A. 1858.

Common names: Wright's lip fern
Illustrated
Treatment appears in FNA Volume 2.

Stems long-creeping, 1–3 mm diam.; scales uniformly brown or slightly darker at base, linear-lanceolate, straight to slightly contorted, loosely appressed, often deciduous on older portions of stem. Leaves clustered to somewhat scattered, 4–25 cm; vernation circinate. Petiole brown, grooved adaxially. Blade lanceolate to ovate-deltate, 2-pinnate-pinnatifid at base, 1–4 cm wide; rachis grooved adaxially, not scaly or pubescent. Pinnae not articulate, dark color of stalk continuing into pinna base, basal pair often slightly larger than adjacent pair, ± equilateral, appearing glabrous adaxially. Costae green adaxially for most of length; abaxial scales absent. Ultimate segments oblong to linear, not beadlike, the largest 3–7 mm, abaxially and adaxially glabrous. False indusia marginal, slightly differentiated, 0.05–0.25 mm wide. Sori discontinuous, concentrated on interrupted lateral lobes. Sporangia containing 64 spores. 2n = 60.


Phenology: Sporulating summer–fall.
Habitat: Rocky slopes and ledges usually on igneous substrates
Elevation: 300–2000 m

Distribution

V2 51-distribution-map.gif

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

Discussion

The glabrous Cheilanthes wrightii is occasionally confused with C. alabamensis and certain species of Pellaea. Cheilanthes wrightii is easily separated from C. alabamensis by its glabrous rachis, which is grooved on the adaxial surface. It is distinguished from all local members of Pellaea by having both a grooved rachis and a thin, long-creeping stem.

Selected References

None.

Lower Taxa

None.

... more about "Cheilanthes wrightii"
Michael D. Windham +  and Eric W. Rabe +
Hooker +
often slightly larger than adjacent pair +
cuneate +, truncate +  and rounded +
scaly rarely glabrous adaxially pubescent +  and glabrous +
2-pinnate-pinnatifid +, lanceolate +  and ovate-deltate +
1cm;4cm +
Wright's lip fern +
Ariz. +, N.Mex. +, Tex. +  and n Mexico +
300–2000 m +
0.005 cm0.05 mm <br />5.0e-5 m <br /> (0.025 cm0.25 mm <br />2.5e-4 m <br />) +
yellow +  and white +
obcordate;reniform +
Rocky slopes and ledges usually on igneous substrates +
monomorphic +
scattered;clustered to somewhat +
recurved +  and reflexed +
noncircinate +  and circinate +
4 cm40 mm <br />0.04 m <br /> (25 cm250 mm <br />0.25 m <br />) +
circinate +
denticulate +  and entire +
glabrous +, scaly +  and pubescent +
flattened +  and rounded +
Sporulating summer–fall. +
not articulate +
pubescent +  and not scaly +
darker;brown +
straight +
deciduous +
linear-lanceolate +
Illustrated +
yellowish +, brown +  and black or gray +
cristate +  and tetrahedral-globose +
dark colored +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
ascending +  and horizontal +
Cheilanthes wrightii +
Cheilanthes +
species +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 cm0 mm <br />0 m <br /> (?) +  and 0.4 cm4 mm <br />0.004 m <br /> (?) +
crescent--shaped +  and roundish +
branched +  and anastomosing +