Ivesia lycopodioides
Ivesia lycopodioides var. lycopodioides
club-moss ivesia, clubmoss mousetail
clubmoss ivesia, clubmoss mousetail
decumbent to erect, 0.3–3 dm.
decumbent to ascending, 0.3–1(–1.5) dm.
tightly to loosely cylindric, 1–15 cm; sheathing base glabrous abaxially;
petiole 0.5–4 cm, hairs 0.2–1 mm;
leaflets 10–35 per side, 1–8 mm, glabrous or short-hirsute, minutely glandular, lobes (2–)4–8(–10), linear to obovate or ± orbiculate, apex sometimes setose.
1–7 cm;
leaflets tightly overlapping, glabrous or sparsely short-hirsute, lobes ± orbiculate, ± 1 mm, apical setae 0(–0.5) mm.
0–2(–3), not paired.
0–1.
3–20(–25)-flowered, (0.5–)1–2.5(–3.5) cm diam.;
glomerules usually 1.
usually ± capitate, 3–15(–20)-flowered, 0.5–1.5(–2) cm diam.
(0.5–)1–7(–11) mm.
6–12 mm diam.;
epicalyx bractlets oblong to oval, 0.8–2.5(–3) mm;
hypanthium shallowly cupulate, 1–2 × 2.5–5 mm;
sepals (1.8–)2–4(–4.5) mm, obtuse to acute;
petals golden yellow, obovate, 2–5 mm;
stamens 5, filaments 0.8–2 mm, anthers yellow, 0.6–0.8 mm;
carpels (5–)8–15(–18), styles 1–3 mm.
6–9 mm diam.;
petals obovate, 2–3 × 1 mm;
filaments 0.8–1.2 mm;
styles 1–2 mm.
greenish tan to light brown, 1.2–1.5 mm.
= 28.
Ivesia lycopodioides
Ivesia lycopodioides var. lycopodioides
Varieties 3 (3 in the flora).
The three varieties of Ivesia lycopodioides are for the most part readily distinguished, though intergradation is known. The high-elevation var. lycopodioides extends farthest north; var. scandularis is the only variety in the White Mountains. Variety megalopetala is found mostly at somewhat lower (subalpine) elevations and generally has a more southern range.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
1. Leaflets short-hirsute, apical setae (0–)0.5–1(–2) mm; White Mountains and c Sierra Nevada. | var. scandularis |
1. Leaflets glabrous or sparsely short-hirsute, apical setae 0–0.5 mm; Sierra Nevada and Sweetwater Mountains | → 2 |
2. Leaflet lobes ± orbiculate, ± 1 mm; petals 2–3 × 1 mm. | var. lycopodioides |
2. Leaflet lobes linear to oblanceolate, 2–8 mm; petals 3–5 × 2–4 mm. | var. megalopetala |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
