Ivesia lycopodioides var. megalopetala
Ivesia lycopodioides
clubmoss ivesia, clubmoss mousetail, Rock Creek or big-petal ivesia
club-moss ivesia, clubmoss mousetail
ascending to erect, 1–3 dm.
decumbent to erect, 0.3–3 dm.
4–15 cm;
leaflets loosely overlapping, ± glabrous or sparsely short-hirsute, lobes linear to oblanceolate, 2–8 mm, apical setae 0–0.5 mm.
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.
1–2(–3).
0–2(–3), not paired.
± open to congested, sometimes subcapitate, 5–20(–25)-flowered, 1–2.5(–3.5) cm diam.
3–20(–25)-flowered, (0.5–)1–2.5(–3.5) cm diam.;
glomerules usually 1.
(0.5–)1–7(–11) mm.
8–12 mm diam.;
petals broadly obovate, 3–5 × 2–4 mm;
filaments (1–)1.5–2 mm;
styles 2.5–3 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.
greenish tan to light brown, 1.2–1.5 mm.
Ivesia lycopodioides var. megalopetala
Ivesia lycopodioides
Variety megalopetala is known from the southern Sierra Nevada from Mono and Tuolumne to Tulare counties. It tends to be the largest of the three varieties, with plants having larger flowers and longer and narrower leaflet lobes, which commonly have apical setae to 0.5 mm. Variety megalopetala is also more likely to occur in wet meadows along subalpine streams.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
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
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USDA Plants Database
