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alkali hymenoxys, Lemmon's bitterweed, Lemmon's goldflower, Lemmon's rubberweed, Lemmon's rubberweed or bitterweed

Habit Perennials, 30–50 cm (polycarpic; often with moderately branched, woody caudices).
Stems

3–10(–15), green throughout or purple-red-tinted proximally, branched distally, glabrous or ± sparsely hairy.

Leaves

blades simple or lobed (lobes 3–13), glabrous or sparsely hairy, gland-dotted;

mid leaves lobed (lobes 3–7, terminal lobes 1.5–2.3 mm wide).

Peduncles

(1–)2–4.5 cm, glabrous or ± hairy.

Involucres

subhemispheric to campanulate, 8–11 × 12–15 mm.

Ray florets

9–12;

corollas yellow, 10–16 × 4–6.5 mm.

Disc florets

50–125+;

corollas 3.5–4.2 mm.

Phyllaries

in 2 series, unequal;

outer 10–12, basally connate 1/4–1/2 their lengths (moderately to strongly keeled), ovate to lanceolate, 4.5–7 mm, apices acuminate to acute;

inner 13–18(–28), obovate, 4–6 mm, apices usually mucronate.

Heads

10–85+ per plant, in paniculiform to corymbiform arrays.

Cypselae

obpyramidal to narrowly obpyramidal, 2.5–3.5 mm;

pappi of 5(–6) obovate, aristate scales (1.5–)2.1–2.8 mm.

2n

= 30.

Hymenoxys lemmonii

Phenology Flowering (Jun–)Jul–Aug(–Sep).
Habitat Roadsides, open areas, meadows, on slopes, along drainages and streams
Elevation (800–)1400–2200(–3200) m ((2600–)4600–7200(–10500) ft)
Distribution
from FNA
CA; NV; UT
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 443.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Hymenoxys
Sibling taxa
H. ambigens, H. bigelovii, H. brachyactis, H. brandegeei, H. cooperi, H. grandiflora, H. helenioides, H. hoopesii, H. jamesii, H. odorata, H. quinquesquamata, H. richardsonii, H. rusbyi, H. subintegra, H. texana, H. vaseyi
Synonyms Picradenia lemmonii
Name authority (Greene) Cockerell: Bull. Torrey Bot. Club 31: 477. (1904)
Web links