Ivesia lycopodioides

A. Gray

Proc. Amer. Acad. Arts 6: 530. 1865.

Endemic
Synonyms: Potentilla lycopodioides (A. Gray) Baillon ex J. T. Howell
Treatment appears in FNA Volume 9. Treatment on page 232. Mentioned on page 230, 231, 233, 235, 236.

Plants green, usually rosetted, sometimes ± tufted; taproot fusiform, fleshy. Stems decumbent to erect, 0.3–3 dm. Basal leaves 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. Cauline leaves 0–2 (–3), not paired. Inflorescences 3–20 (–25) -flowered, (0.5–) 1–2.5 (–3.5) cm diam.; glomerules usually 1. Pedicels (0.5–) 1–7 (–11) mm. Flowers 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. Achenes greenish tan to light-brown, 1.2–1.5 mm.

Discussion

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.

Selected References

None.

Key

1 Leaflets short-hirsute, apical setae (0–)0.5–1(–2) mm; White Mountains and c Sierra Nevada. Ivesia lycopodioides 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. Ivesia lycopodioides var. lycopodioides
2 Leaflet lobes linear to oblanceolate, 2–8 mm; petals 3–5 × 2–4 mm. Ivesia lycopodioides var. megalopetala

"dm" is not declared as a valid unit of measurement for this property.

... more about "Ivesia lycopodioides"
not carunculate +
greenish tan +  and light-brown +
1.2mm +  and 1.5mm +
longer than wide +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Barbara Ertter +  and James L. Reveal +
A. Gray +
compound +  and simple +
opposite +  and alternate +
1 cm10 mm <br />0.01 m <br /> (15 cm150 mm <br />0.15 m <br />) +
20 cm200 mm <br />0.2 m <br /> (25 cm250 mm <br />0.25 m <br />) +
narrowly oblong +  and filiform planar +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (20 cm200 mm <br />0.2 m <br />) +
reduced +
elongate +
free +  and distinct +
branched +  and simple +
Calif. +  and Nev. +
not +  and aggregated +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
oblong +  and oval +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
unisexual +  and bisexual +
not +  and aggregated +
deciduous +
obliquely ovoid +  and reniform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
loose +  and capitate +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
3-20(-25)-flowered +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
crassinucellate +
opposite +  and alternate +
winter-marcescent +
deciduous +  and persistent +
, +  and distinct +
not +  and distinguishable +
short-hirsute +  and glabrous +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
linear +  and obovate or more or less orbiculate +
verticillate +
toothed +, unlobed +  and lobed +
inferior +  and superior +
clustered +, biseriate +  and superposed +
0.7 cm7 mm <br />0.007 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
adnate +, free +, connate +  and distinct +
Proc. Amer. Acad. Arts +
not arillate +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
obtuse +  and acute +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
free +  and distinct +
branched +  and simple +
reddish +, grayish +  and green +
decumbent +  and erect +
2 +  and 20 +
palmate +  and pinnate +
deciduous +
distinct +
subterminal +
filiform +
rough-thickened +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Potentilla lycopodioides +
Ivesia lycopodioides +
Ivesia sect. Ivesia +
species +
inconspicuous +
stipelike +, elongate +, less flat +  and conic or turbinate +
enlarged +
glabrate +  and sparsely densely glandular-puberulent +