Ivesia argyrocoma
Ivesia sabulosa
silver-hair ivesia, silverhair mousetail
intermountain ivesia, intermountain mousetail, Sevier ivesia, yellow comarella
ascending to erect, (1.8–)2–6(–6.5) dm.
7–25(–30) cm; sheathing base usually sparsely strigose abaxially;
petiole 1–4(–5) cm;
leaflets 15–40 per side, ± flabellate, 3–14 mm, usually incised to base into 2–3 oblanceolate lobes, ± densely short-hirsute to -villous.
10–60-flowered, 4–15 cm diam.
(1–)5–20 mm.
9–14 mm diam.;
epicalyx bractlets lanceolate, 1–3(–3.3) mm;
hypanthium interior golden, 1–2 × 3–5 mm;
sepals (2.5–)3.5–6 mm, base golden adaxially, apex acute to acuminate;
petals yellow, linear to narrowly oblanceolate, 2–4 mm;
stamens 5, filaments 2–4 mm, anthers yellow, sometimes red-rimmed, oblong, 0.6–1.2 mm;
carpels 1–5, styles 2–3 mm.
brown, 1.7–2.2 mm.
Ivesia argyrocoma
Ivesia sabulosa
Varieties 2 (1 in the flora).
Plants from the central Sierra San Pedro Mártir in northern Baja California belong to var. moranii Ertter & Reveal, which may be distinguished by its compact stature (to 0.5 dm), densely villous basal stipules 2–4 mm, decumbent stems 2–7 cm that are stipitate-glandular under the villous indumentum, and solitary, loosely congested cyme. The petals are oblanceolate to narrowly obovate and 2.5–3.5 mm. The grayish, faintly mottled achenes are 1.3–2 mm.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Ivesia sabulosa occurs from central Nevada and southwestern Utah south to Arizona north of the Grand Canyon.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CalFlora
WildflowerSearch
iNaturalist
USDA Plants Database
