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Photo is of parent taxon

clubmoss ivesia, clubmoss mousetail

Stems

decumbent to ascending, 0.3–1(–1.5) dm.

Basal leaves

1–7 cm;

leaflets tightly overlapping, glabrous or sparsely short-hirsute, lobes ± orbiculate, ± 1 mm, apical setae 0(–0.5) mm.

Cauline leaves

0–1.

Inflorescences

usually ± capitate, 3–15(–20)-flowered, 0.5–1.5(–2) cm diam.

Flowers

6–9 mm diam.;

petals obovate, 2–3 × 1 mm;

filaments 0.8–1.2 mm;

styles 1–2 mm.

2n

= 28.

Ivesia lycopodioides var. lycopodioides

Phenology Flowering summer.
Habitat Dry rocky flats or slopes, fellfields, in high-elevation sagebrush communities, subalpine to alpine conifer woodlands, alpine tundra
Elevation 3000–4000 m (9800–13100 ft)
Distribution
from FNA
CA; NV
[BONAP county map]
Discussion

Variety lycopodioides occurs in the Sierra Nevada from El Dorado and Alpine to Fresno counties, and on the Sweetwater Mountains of Mono County, California. The voucher reported by D. D. Keck (1938) from the Carson Range of Washoe County, Nevada, has not been located for confirmation. Of the three varieties, var. lycopodioides tends to have plants with the smallest leaflet lobes (ca. 1 mm) which lack apical setae. Plants also have more consistently simple caudices bearing a single rosette of glabrous or sparsely hairy leaves atop an enlarged, fleshy taproot.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 9, p. 232.
Parent taxa Rosaceae > subfam. Rosoideae > tribe Potentilleae > Ivesia > sect. Ivesia > Ivesia lycopodioides
Sibling taxa
I. lycopodioides var. megalopetala, I. lycopodioides var. scandularis
Name authority unknown
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