Flora of North America species comparison

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Cheilanthes viscida

viscid lip fern
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.
Ultimate segments

oblong to lanceolate, not beadlike, the largest 3–4 mm, abaxially and adaxially glandular-pubescent with short, sticky, capitate glands.
Pinnae

not articulate, dark color of stalk continuing into pinna base, basal pair slightly smaller than adjacent pair, ± equilateral, appearing glandular pubescent adaxially.
False indusia

marginal, weakly differentiated, 0.05–0.25 mm wide.
Sori

usually discontinuous, concentrated on apical and lateral lobes.
Sporangia

containing 64 spores.
Costae

green adaxially for most of length;

abaxial scales absent.

Cheilanthes viscida
Phenology Sporulating late spring–fall.
Habitat Cliffs and rocky slopes, usually on igneous substrates
Elevation 200–1300 m (700–4300 ft)
Distribution
from FNA
CA; Mexico in Baja California
[WildflowerSearch map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 2.
Parent taxa Pteridaceae > Cheilanthes
Sibling taxa
C. aemula, C. alabamensis, C. arizonica, C. bonariensis, C. clevelandii, C. cooperae, C. covillei, C. eatonii, C. feei, C. fendleri, C. gracillima, C. horridula, C. intertexta, C. kaulfussii, C. lanosa, C. lendigera, C. leucopoda, C. lindheimeri, C. microphylla, C. newberryi, C. parryi, C. pringlei, C. tomentosa, C. villosa, C. wootonii, C. wrightii, C. yavapensis
Name authority Davenport: Bull. Torrey Bot. Club 6: 191. (1877)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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