Thymophylla tenuiloba
Thymophylla pentachaeta
bristleleaf pricklyleaf, Dahlburg-daisy, shooting star
five-needle pricklyleaf
decumbent to erect.
erect or spreading.
mostly alternate (sometimes opposite at 1–3 proximal nodes);
blades usually lobed, 12–28 mm overall, lobes 7–15, linear to filiform, pliable (blades mostly not lobed in var. wrightii).
mostly opposite;
blades mostly pinnately lobed, 6–28+ mm overall, lobes 3–11 linear to filiform (usually stiff, setiform).
30–80 mm, glabrous or hirtellous.
20–100 mm, puberulent or glabrous.
obconic, 5–7 mm.
obconic to campanulate or hemispheric, 4–6 mm.
10–21;
corollas yellow-orange, laminae 4–10 × 1.5–3 mm.
(8–)12–21;
corollas yellow to orange-yellow, laminae 2–6(–8) × 1–3 mm.
50–100+;
corollas yellow, 2.5–4.5 mm (peripheral ± zygomorphic in some plants).
16–40 or 50–80;
corollas yellow, 2–4 mm (tending to zygomorphy in peripheral florets in some plants).
12–22, margins of outer distinct less than 1/5 their lengths, abaxial faces glabrous or sparsely hirtellous.
12–21, margins of outer distinct 1/5 to nearly all their lengths, abaxial faces puberulent or glabrous.
of 3–8 deltate to subulate bractlets, lengths less than 1/2 phyllaries.
0, or of 1–5 deltate bractlets, lengths less than 1/2 phyllaries.
2–3.5 mm;
pappi of erose and/or aristate scales 0.7–3.5 mm.
2–3 mm;
pappi of 10 erose and/or aristate scales mostly 1–3 mm.
Thymophylla tenuiloba
Thymophylla pentachaeta
Varieties 4 (4 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Varieties 4 (4 in the flora).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Leaf blades seldom lobed (linear to spatulate, usually entire, rarely with 3–5 toothlike lobes) | var. wrightii |
1. Leaf blades lobed (lobes 7–15 linear) | → 2 |
2. Pappi of 3–5-aristate scales | var. tenuiloba |
2. Pappi of truncate to lanceolate and/or 1-aristate scales | → 3 |
3. Pappi of 5 erose scales alternating with 5unequal, 1-aristate scales | var. treculii |
3. Pappi of 5–10 lanceolate to muticous scales, all ± erose or 1–3, 1-aristate | var. texana |
1. Involucres cylindric, 2–3.5 mm diam.; disc florets 16–40 | var. hartwegii |
1. Involucres obconic, campanulate, or hemispheric, mostly 4–5 mm diam.; disc florets 50–80 | → 2 |
2. Peduncles 20–50 mm; margins of outer phyllaries distinct almost to bases | var. belenidium |
2. Peduncles (40–)50–100 mm; margins of outer phyllaries distinct less ca. 1/2 or ca. 1/3 their lengths | → 3 |
3. Leaf lobes mostly 9–11; phyllaries usually glabrous or glabrescent, rarely hairy | var. pentachaeta |
3. Leaf lobes mostly 5–7(–10); phyllaries densely puberulent | var. puberula |
WildflowerSearch
iNaturalist
USDA Plants Database
CalFlora
