Layia glandulosa
white layia, white-daisy tidytips
not purple-streaked (often uniformly dark purple).
blades obovate to linear, 6–100 mm, margins (basal leaves) toothed to lobed.
± campanulate to hemispheric, 4–11 × 3–11+ mm.
3–14;
laminae often white, sometimes yellow or pale yellow, 3–22 mm.
17–100+;
corollas 3.5–6.5 mm;
anthers yellow to brownish.
3–14, apices often shorter (sometimes longer) than folded bases.
glabrous.
in 1 series between ray and disc florets.
pappi of 10–15 usually white (rarely tawny), linear-attenuate to subulate, ± equal scales 2–5 mm, each proximally plumose and often adaxially woolly.
= 16.
Layia glandulosa
Layia glandulosa occurs in deserts of western North America, extending to the Pacific coast in central and southern California. As treated here (provisionally) and previously, L. glandulosa corresponds to a paraphyletic group; molecular phylogenetic data have indicated that L. discoidea is most closely related to a subset of lineages in L. glandulosa, including yellow-rayed populations previously recognized as subsp. lutea or var. lutea (B. G. Baldwin, unpubl.). Report of L. glandulosa from British Columbia has not been confirmed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
