Chrysopsis linearifolia |
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narrowleaf goldenaster |
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Habit | Biennials (rarely perennials), 30–100(–200) cm; taprooted (rarely perennating by production of basal rosettes). | ||||
Stems | erect (often reddish purple), usually simple, glabrous. |
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Leaves | basal blades oblanceolate to linear, 15–70 × 1–7 mm, faces glabrous or densely woolly; proximal cauline often becoming black and twisted; cauline blades linear or linear-lanceolate to oblong, flat, slightly undulate, or twisted, bases tapering to rounded, margins entire, eciliate, occasionally undulate, apices acute, faces glabrous. |
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Peduncles | 2–8 cm, glabrous; bracteoles 1–3, linear, glabrous. |
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Involucres | campanulate, 6–10(–12) mm. |
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Ray florets | 10–30; laminae 9–12 mm. |
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Disc florets | 35–60; corollas 5–6 mm, lobes 0.5–1 mm. |
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Phyllaries | in 4–5 series, erect, linear-lanceolate, unequal, 0.6–1.1 mm wide, apices, acute-appressed, acuminate to long-acuminate, faces glabrous, bases of outer sparsely stipitate-glandular. |
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Heads | (4–)20–100 in subumbelliform to compact, paniculiform or loosely open corymbiform arrays. |
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Cypselae | (stramineous) 2–2.5 mm, 2–6-ridged (ridges golden yellow to red-brown, translucent, clavate), weakly ribbed, faces sparsely strigose to sometimes only proximally so; pappi in 3 series, outer of linear to narrowly triangular scales 0.5–1 mm, inner of 20–35 bristles 4–6 mm, inner moderately clavate. |
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2n | = 10. |
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Chrysopsis linearifolia |
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Distribution |
FL |
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Discussion | Subspecies 2 (2 in the flora). Chrysopsis linearifolia is disjunct between the central and western panhandle and the central peninsula. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 218. | ||||
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Name authority | Semple: Brittonia 30: 493. (1978) | ||||
Web links |