Layia hieracioides
Layia jonesii
hawkweed layia, tall tidytips
Jones' layia, Jones' tidytips
purple-streaked.
usually purple-streaked.
blades elliptic, lanceolate, linear, or oblanceolate, 7–150 mm, margins (basal leaves) lobed to toothed.
blades lanceolate or oblanceolate to linear, 10–70(–90) mm, margins (basal leaves) lobed to pinnatifid.
± ellipsoid to obconic, 4–9 × 4–9+ mm.
± broadly urceolate, 4–8 × 4–8(–12) mm.
6–16;
laminae yellow, 1–4 mm.
13–27 (in 2 series);
laminae proximally yellow, distally white, 5–10(–14) mm.
9–80;
corollas 2.5–4.5 mm;
anthers ± dark purple.
35–100+;
corollas 3–5 mm;
anthers ± dark purple.
6–16, apices shorter than folded bases.
13–27, apices usually shorter, sometimes longer than folded bases.
glabrous.
glabrous.
in 1 series between ray and disc florets.
in 1 series between ray and 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 0 or of 8–14 whitish, ± ovate or elliptic, ± equal scales 0.5–2 mm, not plumose, not adaxially woolly (bases sparsely setose).
= 16, 32.
= 14.
Layia hieracioides
Layia jonesii
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.)
Of conservation concern.
Layia jonesii occurs on the immediate coast from Cayucos to Morro Bay and in the Outer South Coast Ranges near San Luis Obispo. Layia jonesii is most closely related to L. leucopappa and L. munzii (B. G. Baldwin, unpubl.); the three species are interfertile (they do not co-occur; J. Clausen 1951).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
