Ivesia patellifera
Ivesia argyrocoma
Kingston Mountain mousetail, Kingston Mountains. ivesia
silver-hair ivesia, silverhair mousetail
pendent or prostrate to ascending, (0.5–)1–2 dm.
planar, (2–)5–15 cm; sheathing base not strigose abaxially;
petiole 1–5 cm;
lateral leaflets (1–)2–3(–4) per side, separate, obovate to orbiculate, 5–20 mm, incised 1/4–1/2 to base into 5–9 broadly ovate teeth, apex not setose, surfaces short-pilose, ± glandular;
terminal leaflets distinct.
(0–)2;
blade well developed.
(1–)3–20(–35)-flowered, open, (0.5–)1.5–4(–6) cm diam.
5–20(–30) mm.
7–10 cm diam.;
epicalyx bractlets 0;
hypanthium patelliform, 0.5(–1) × 2–3 mm;
sepals 2–4 mm, broadly acute;
petals yellow, narrowly oblanceolate, 2–3 mm;
stamens 5–10, filaments 0.6–1.2(–1.5) mm, anthers yellow, oblong, 0.8–1 mm;
carpels 4–10, styles 1.5–2 mm.
greenish white to light tan, 1.5–2 mm, faintly rugose, ± carunculate.
Ivesia patellifera
Ivesia argyrocoma
Of conservation concern.
Ivesia patellifera is confined to crevices in steep wash and canyon walls in the Kingston Mountains of San Bernardino County.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
