Layia pentachaeta
Layia fremontii
Sierra layia, Sierra tidy tips
Fremont's tidy tips
not purple-streaked.
not purple-streaked.
blades oblanceolate or lanceolate to linear, 6–110 mm, margins (basal leaves) 1–2-pinnatifid.
blades lanceolate or oblanceolate to linear, 6–70(–90) mm, margins (basal leaves) lobed (pinnatifid).
± hemispheric, 5–12 × 2–12+ mm.
hemispheric to depressed-hemispheric, 4–11 × 3–11+ mm.
3–14;
laminae yellow or white, 3–26 mm.
3–15;
laminae proximally yellow, distally white or light yellow, 5–18(–23) mm.
7–120+;
corollas 3–6 mm;
anthers yellow to brownish.
4–100+;
corollas 3.5–4.5 mm;
anthers ± dark purple.
4–14, apices shorter or longer 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 0 or of 1–22 whitish, ± equal, setiform scales 1.5–3.5 mm, each proximally plumose, seldom adaxially woolly.
pappi of 9–12 white to tawny, lance-attenuate, ± equal scales 2–5 mm, each neither plumose nor adaxially woolly.
= 14.
Layia pentachaeta
Layia fremontii
Subspecies 2 (2 in the flora).
Molecular phylogenetic data have indicated that Layia pentachaeta is closely related to L. glandulosa and L. discoidea (B. G. Baldwin, unpubl.). Distributions of L. pentachaeta and L. glandulosa overlap broadly; the two species occur in different habitats and natural hybridization has been rarely detected (first-generation hybrids are of low to moderate fertility; J. Clausen 1951).
(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.)
1. Ray corollas yellow | subsp. pentachaeta |
1. Ray corollas white | subsp. albida |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
OR
Flora NW
PNW Herbaria
