Agnorhiza elata |
Agnorhiza |
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Hall's mule-ears |
mule-ears |
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Habit | Plants 50–100 cm. | Perennials, 5–60(–100) cm (taproots relatively massive; caudices sometimes branched). | ||||||||||||||||
Stems | erect, usually branched distally. |
erect and branched (mostly distally), or decumbent (and seldom branched distally). |
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Leaves | basal and cauline (basal usually scalelike on flowering stems, well-formed on non-flowering shoots); alternate; petiolate; blades (3-or 5-nerved or pinnately nerved), cordate-ovate, deltate, deltate-triangular, ovate, ovate-lanceolate, or suborbiculate, bases broadly cuneate, subcordate, or truncate, margins entire or dentate to crenate, faces glabrous or hairy (often gland-dotted). |
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Cauline leaves | blades ovate-lanceolate to deltate, (8–)10–15(–20) cm, bases truncate to subcordate, margins entire or finely dentate or serrulate, faces tomentulose to pilosulous (and gland-dotted). |
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Involucres | hemispheric, 25–40 mm diam. |
campanulate to ± hemispheric, 12–40 mm diam. |
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Receptacles | flat to convex, paleate (paleae persistent, conduplicate, chartaceous). |
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Ray florets | 10–14(–23), laminae (30–)50–60 mm. |
0 or (1–)5–21+, pistillate, fertile; corollas yellow. |
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Disc florets | 50–150+, bisexual, fertile; corollas yellow, tubes shorter than cylindric throats, lobes 5, lance-deltate (style branches stigmatic in 2, barely distinct lines, appendages filiform). |
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Phyllaries | persistent, (8–)12–26+ in 2–3+ series (subequal to unequal, outer usually surpassing inner). |
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Outer phyllaries | lanceolate, 20–30 mm (equaling or surpassing discs, tips often spreading to squarrose). |
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Heads | held beyond leaves. |
radiate or discoid, borne singly (terminal) or in ± racemiform arrays. |
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Cypselae | 8–12 mm, usually glabrous, sometimes distally strigillose; pappi coroniform (lacerate, projected into scales on angles), (0.5–)1–2(–3) mm. |
± prismatic, 3–4-angled (faces glabrous or strigillose); pappi usually persistent, coroniform (± lacerate, sometimes with 1–4 teeth or scales), sometimes 0. |
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x | = 19. |
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2n | = 38. |
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Agnorhiza elata |
Agnorhiza |
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Phenology | Flowering Jun–Jul(–Aug). | |||||||||||||||||
Habitat | Open pine forests | |||||||||||||||||
Elevation | 900–1200 m (3000–3900 ft) | |||||||||||||||||
Distribution |
CA |
CA; nw Mexico |
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Discussion | Agnorhiza elata is known only from foothills of the Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 5 (5 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 105. | FNA vol. 21, p. 104. | ||||||||||||||||
Parent taxa | ||||||||||||||||||
Sibling taxa | ||||||||||||||||||
Subordinate taxa | ||||||||||||||||||
Synonyms | Wyethia elata | Balsamorhiza section A. | ||||||||||||||||
Name authority | (H. M. Hall) W. A. Weber: Phytologia 85: 19. (1999) | (Jepson) W. A. Weber: Phytologia 85: 19. (1999) | ||||||||||||||||
Web links |