Layia pentachaeta
Layia munzii
Sierra layia, Sierra tidy tips
Munz'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 oblanceolate to linear, 5–60 mm, margins (basal leaves) lobed.
± hemispheric, 5–12 × 2–12+ mm.
hemispheric to ± urceolate, 5–9 × 5–10+ mm.
3–14;
laminae yellow or white, 3–26 mm.
6–15;
laminae proximally yellow, distally white, 3–14 mm.
7–120+;
corollas 3–6 mm;
anthers yellow to brownish.
16–100+;
corollas 3.5–5 mm;
anthers ± dark purple.
4–14, apices shorter or longer than folded bases.
6–15, apices shorter or longer than folded bases.
glabrous.
glabrous or sparsely hairy.
in 1 series between ray and disc florets.
in 1 series between ray and 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 whitish, lance-linear, attenuate, ± equal scales 2–3.5 mm, each ± scabrous, not plumose, not adaxially woolly (bases sparsely setose).
= 14.
Layia pentachaeta
Layia munzii
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.)
Of conservation concern.
Layia munzii occurs in the southern San Joaquin Valley and South Inner Coast Ranges. Populations are evident only in some wet years, when dense stands may be found, sometimes near L. platyglossa (natural hybrids have not been reported; artificial hybrids have reduced fertility; J. Clausen 1951).
(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
