Cheilanthes viscida

Davenport

Bull. Torrey Bot. Club 6: 191. 1877.

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

Stems short-creeping, usually 4–8 mm diam.; scales uniformly brown, linear-subulate, strongly contorted, loosely appressed, persistent. Leaves clustered, 6–30 cm; vernation circinate. Petiole dark-brown, flattened or slightly grooved distally on adaxial surface. Blade narrowly oblong to linear, 3-pinnate-pinnatifid at base, 1–4 cm wide; rachis flattened or slightly grooved adaxially, lacking scales, with monomorphic pubescence. Pinnae not articulate, dark color of stalk continuing into pinna base, basal pair slightly smaller than adjacent pair, ± equilateral, appearing glandular-pubescent adaxially. Costae green adaxially for most of length; abaxial scales absent. Ultimate segments oblong to lanceolate, not beadlike, the largest 3–4 mm, abaxially and adaxially glandular-pubescent with short, sticky, capitate glands. False indusia marginal, weakly differentiated, 0.05–0.25 mm wide. Sori usually discontinuous, concentrated on apical and lateral lobes. Sporangia containing 64 spores.


Phenology: Sporulating late spring–fall.
Habitat: Cliffs and rocky slopes, usually on igneous substrates
Elevation: 200–1300 m

Distribution

V2 819-distribution-map.gif

Calif., Mexico in Baja California

Discussion

Cheilanthes viscida is confined to a relatively small region in the deserts of California. Variations in spore size among populations suggest that the species may include more than one cytotype.

Selected References

None.

Lower Taxa

None.

... more about "Cheilanthes viscida"
Michael D. Windham +  and Eric W. Rabe +
Davenport +
glandular-pubescent +
slightly smaller than adjacent pair +
cuneate +, truncate +  and rounded +
scaly rarely glabrous adaxially pubescent +  and glabrous +
3-pinnate-pinnatifid +, narrowly oblong +  and linear +
1cm;4cm +
Viscid lip fern +
Calif. +  and Mexico in Baja California +
200–1300 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 +
Cliffs and rocky slopes, usually on igneous substrates +
monomorphic +
clustered;widely scattered +
recurved +  and reflexed +
noncircinate +  and circinate +
6 cm60 mm <br />0.06 m <br /> (30 cm300 mm <br />0.3 m <br />) +
circinate +
denticulate +  and entire +
glabrous +, scaly +  and pubescent +
flattened +
Sporulating late spring–fall. +
not articulate +
Bull. Torrey Bot. Club +
flattened +
persistent +
linear-subulate +
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 viscida +
Cheilanthes +
species +
glandular-pubescent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 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 +