Leaves monomorphic or weakly subdimorphic, 10–30 cm. Blade 4-pinnate, 3–12 cm, nearly as wide as long, thin to thick. Ultimate segments narrowly lanceolate to deltate, 2–6 mm; midrib obscure or evident abaxially. Sori of mature blades ± discrete to usually subcontinuous, 3–7 (–9) per segment; indusia semicircular to usually elongate and connecting several adjacent sori, margins with 6–10 irregular and prominent teeth and/or lobes. 2n = 120.

Distribution

• Generated Map
• Legacy Map

100–1400 m, Calif.

Discussion

Aspidotis carlotta-halliae is a fertile allotetraploid species derived from hybridization between A. californica and A. densa. Occasional sterile backcrosses are found.

Generally on serpentine slopes, in crevices, and on rock outcrops

Selected References

None.

Lower Taxa

None.

"thin" is not a number.