Cheilanthes pringlei

Davenport

Bull. Torrey Bot. Club 10: 61. 1883.

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

Stems long-creeping, 1–3 mm diam.; scales uniformly brown or with poorly defined, dark, central stripe, linear-lanceolate, straight to slightly contorted, loosely appressed, usually persistent. Leaves clustered to somewhat scattered, 4–15 cm; vernation noncircinate. Petiole dark-brown, grooved distally on adaxial surface. Blade ovate-deltate, 3-pinnate-pinnatifid at base, 1.5–5 cm wide; rachis grooved adaxially, with scattered, lanceolate scales, not pubescent. Pinnae not articulate, dark color of stalk continuing into pinna base, basal pair conspicuously larger than adjacent pair, inequilateral, basiscopic pinnules enlarged, appearing glabrous adaxially. Costae green adaxially for most of length; abaxial scales multiseriate, lanceolate, truncate or subcordate at base, without overlapping basal lobes, conspicuous, the largest 0.4–0.8 mm wide, loosely imbricate, not concealing ultimate segments, erose, not ciliate. Ultimate segments spatulate, not especially beadlike, the largest usually 2–3 mm, abaxially glabrous or with a few small scales near base, adaxially glabrous. False indusia marginal, weakly differentiated, 0.05–0.25 mm wide. Sori discontinuous, confined to apical or lateral lobes. Sporangia containing 64 spores. 2n = 60.


Phenology: Sporulating late spring–fall.
Habitat: Rocky slopes and ledges, usually on igneous substrates
Elevation: 700–1200 m

Discussion

Cheilanthes pringlei is often confused with young, sterile plants of C. fendleri, but it is easily distinguished from the latter by having rachises that are grooved adaxially. This species appears to be restricted to the Sonoran Desert; records from Gila and Cochise counties, Arizona, and southern New Mexico are based on misidentifications.

Selected References

None.

Lower Taxa

None.

... more about "Cheilanthes pringlei"
subcordate +, truncate +  and lanceolate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Michael D. Windham +  and Eric W. Rabe +
Davenport +
conspicuously larger +
cuneate +, truncate +  and rounded +
scaly rarely glabrous adaxially pubescent +  and glabrous +
3-pinnate-pinnatifid +  and ovate-deltate +
1.5cm;5cm +
Pringle's lip fern +
Ariz. +  and n Mexico +
700–1200 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 /> (15 cm150 mm <br />0.15 m <br />) +
denticulate +  and entire +
glabrous +, scaly +  and pubescent +
flattened +  and rounded +
Sporulating late spring–fall. +
not articulate +
inequilateral +
enlarged +
Bull. Torrey Bot. Club +
not pubescent +
with poorly defined , dark , central stripe;brown +
straight +
persistent +
lanceolate +  and 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 pringlei +
Cheilanthes +
species +
glabrous;with a few small scales;glabrous +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 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 +