Cheilanthes feei

T. Moore

Index Fil. 38. 1857.

Common names: Slender lip fern
Illustrated
Treatment appears in FNA Volume 2.

Stems compact to short-creeping, usually 4–8 mm diam.; scales often uniformly brown but at least some on each plant with well-defined, dark, central stripe, linear-lanceolate, slightly contorted, loosely appressed, persistent. Leaves clustered, 4–20 cm; vernation circinate. Petiole dark-brown to black, rounded adaxially. Blade linear-oblong to lanceolate, 3-pinnate at base, 1–3 cm wide; rachis rounded adaxially, lacking scales, with dense monomorphic pubescence. Pinnae not articulate, dark color of stalk continuing into pinna base, basal pair usually smaller than adjacent pair, ± equilateral, appearing sparsely pubescent to glabrescent adaxially. Costae brown adaxially for most of length; abaxial scales absent. Ultimate segments round to slightly oblong, beadlike, the largest 1–3 mm, abaxially densely villous with long, segmented hairs, adaxially sparsely hirsute to glabrescent. False indusia marginal, weakly differentiated, 0.05–0.20 mm wide. Sori ± continuous around segment margins. Sporangia containing 32 spores. n = 2n = 90, apogamous.


Phenology: Sporulating late spring–fall.
Habitat: Calcareous cliffs and ledges, usually on limestone or sandstone
Elevation: 100–3800 m

Distribution

V2 456-distribution-map.gif

Alta., B.C., Ariz., Ark., Calif., Colo., Idaho, Ill., Iowa, Kans., Ky., Minn., Mo., Mont., Nebr., Nev., N.Mex., Okla., Oreg., S.Dak., Tex., Utah, Va., Wash., Wis., Wyo., n Mexico

Discussion

Cheilanthes feei is an apogamous triploid of unknown parentage. It has small, beadlike blade segments similar to those of subg. Physapteris, but most morphological characteristics suggest a clear relationship to members of subg. Cheilanthes (T. Reeves 1979). The species is most often confused with C. parryi, from which it can be distinguished by its thinner, sparser pubescence and smaller ultimate segments.

Selected References

None.

Lower Taxa

None.

... more about "Cheilanthes feei"
Michael D. Windham +  and Eric W. Rabe +
T. Moore +
sparsely pubescent +  and glabrescent +
usually smaller than adjacent pair +
cuneate +, truncate +  and rounded +
scaly rarely glabrous adaxially pubescent +  and glabrous +
linear-oblong +  and lanceolate +
1cm;3cm +
Slender lip fern +
Alta. +, B.C. +, Ariz. +, Ark. +, Calif. +, Colo. +, Idaho +, Ill. +, Iowa +, Kans. +, Ky. +, Minn. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, Okla. +, Oreg. +, S.Dak. +, Tex. +, Utah +, Va. +, Wash. +, Wis. +, Wyo. +  and n Mexico +
100–3800 m +
0.005 cm0.05 mm <br />5.0e-5 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
yellow +  and white +
obcordate;reniform +
Calcareous cliffs and ledges, usually on limestone or sandstone +
segmented +
monomorphic +
clustered;widely scattered +
recurved +  and reflexed +
noncircinate +  and circinate +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
circinate +
denticulate +  and entire +
dark-brown;black +
glabrous +, scaly +  and pubescent +
Sporulating late spring–fall. +
not articulate +
persistent +
linear-lanceolate +
Illustrated +
yellowish +, brown +  and black or gray +
cristate +  and tetrahedral-globose +
dark colored +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
ascending +  and horizontal +
Cheilanthes feei +
Cheilanthes +
species +
adaxially sparsely hirsute;glabrescent +
0.1 cm1 mm <br />0.001 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 +