Layia hieracioides
Layia fremontii
hawkweed layia, tall tidytips
Fremont's tidy tips
purple-streaked.
not purple-streaked.
blades elliptic, lanceolate, linear, or oblanceolate, 7–150 mm, margins (basal leaves) lobed to toothed.
blades lanceolate or oblanceolate to linear, 6–70(–90) mm, margins (basal leaves) lobed (pinnatifid).
± ellipsoid to obconic, 4–9 × 4–9+ mm.
hemispheric to depressed-hemispheric, 4–11 × 3–11+ mm.
6–16;
laminae yellow, 1–4 mm.
3–15;
laminae proximally yellow, distally white or light yellow, 5–18(–23) mm.
9–80;
corollas 2.5–4.5 mm;
anthers ± dark purple.
4–100+;
corollas 3.5–4.5 mm;
anthers ± dark purple.
6–16, apices shorter than folded bases.
3–15, apices often longer (sometimes shorter) than folded bases.
glabrous.
glabrous.
in 1 series between ray and disc florets.
subtending ± all disc florets.
pappi of 10–16 white to rufous or purplish, ± equal bristles or setiform scales 2–4 mm, each proximally plumose, not adaxially woolly.
pappi of 9–12 white to tawny, lance-attenuate, ± equal scales 2–5 mm, each neither plumose nor adaxially woolly.
= 16, 32.
= 14.
Layia hieracioides
Layia fremontii
Layia hieracioides occurs in the southern San Francisco Bay area, South Coast Ranges, and Western Transverse Ranges. Diploids and tetraploids are morphologically similar and reportedly geographically distinct, with diploids documented from the San Francisco Bay area and tetraploids (= L. paniculata) documented to the south. Natural, ± sterile hybrids between tetraploid plants and L. glandulosa have been documented from the Central Coast (B. D. Tanowitz and J. W. Adams 1986; R. F. Hoover 8369, UC).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Layia fremontii occurs in the Great Valley and adjacent foothills of the Cascade Range and Sierra Nevada.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
OR
Flora NW
PNW Herbaria
