Hymenoxys lemmonii |
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alkali hymenoxys, Lemmon's bitterweed, Lemmon's goldflower, Lemmon's rubberweed, Lemmon's rubberweed or bitterweed |
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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 |
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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 |
CA; NV; UT
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Source | FNA vol. 21, p. 443. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Gaillardiinae > Hymenoxys |
Sibling taxa | |
Synonyms | Picradenia lemmonii |
Name authority | (Greene) Cockerell: Bull. Torrey Bot. Club 31: 477. (1904) |
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