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 +
Viscid lip fern +
Calif. +  and Mexico in Baja California. +
200–1300 m +
Cliffs and rocky slopes, usually on igneous substrates +
Sporulating late spring–fall. +
Bull. Torrey Bot. Club +
Cheilanthes viscida +
Cheilanthes +
species +