Flora of North America species comparison

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Cheilanthes intertexta

coastal lip fern
Stems

short-creeping, usually 3–7 mm diam.;

scales usually bicolored, with broad, well-defined, dark, central stripe and narrow, light brown margins, linear-lanceolate, straight to slightly contorted, strongly appressed, persistent.
Leaves

clustered, 4–25 cm;

vernation noncircinate.
Petiole

dark brown, rounded adaxially.
Blade

lanceolate to ovate-deltate, usually 3-pinnate at base, 1–4 cm wide;

rachis rounded adaxially, with scattered scales and sparse monomorphic pubescence.
Ultimate segments

oblong to ovate, beadlike, the largest 1–3 mm, abaxially densely covered with branched hairs and small, ciliate scales, adaxially with scattered branched hairs or glabrescent.
Pinnae

not articulate, dark color of stalk continuing into pinna base, basal pair not conspicuously larger than adjacent pair, usually equilateral, appearing glabrous to sparsely pubescent adaxially.
False indusia

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

± continuous around segment margins.
Sporangia

containing 64 spores.
Costae

green adaxially for most of length;

abaxial scales multiseriate, ovate-lanceolate, deeply cordate at base, with overlapping basal lobes, conspicuous, the longest 0.4–1 mm wide, imbricate, often concealing ultimate segments, long-ciliate, cilia usually confined to proximal 1/2.

Cheilanthes intertexta
Phenology Sporulating late spring–fall.
Habitat Rocky slopes and ledges, usually on igneous substrates
Elevation 500–2800 m (1600–9200 ft)
Distribution
from FNA
CA; NV; OR
[WildflowerSearch map]
Discussion

Preliminary isozyme analyses support D. B. Lellinger's (1985) suggestion that Cheilanthes intertexta is a fertile allotetraploid hybrid between C. gracillima and C. covillei. It is morphologically most similar to the latter parent (see comments under C. covillei), but it is occasionally confused with C. gracillima, with which it apparently hybridizes to form sterile intermediates that have been called C. gracillima var. aberrans M. E. Jones. Cheilanthes intertexta may also be confused with C. clevelandii, with which it is partially sympatric. In addition to the characters given in the key, C. intertexta is distinguished from closely related sexual species by having larger spores averaging more than 55 µm in diameter.

(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. kaulfussii, C. lanosa, C. lendigera, C. leucopoda, C. lindheimeri, C. microphylla, C. newberryi, C. parryi, C. pringlei, C. tomentosa, C. villosa, C. viscida, C. wootonii, C. wrightii, C. yavapensis
Synonyms C. covillei subsp. intertexta
Name authority (Maxon) Maxon: in Abrams, Ill. Fl. Pacific States 1: 28. (1923)
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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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