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2. Carphephorus odoratissimus (J. F. Gmelin) H. J.-C. Hebert, Rhodora. 70: 483. 1968.
Vanillaleaf
Chrysocoma odoratissima J. F. Gmelin, Syst. Nat. 2: 1204. 1792; Liatris odoratissima (J. F. Gmelin) Michaux; Trilisa odoratissima (J. F. Gmelin) Cassini
Plants 50–140(–180) cm. Stems glabrous. Leaves: basal oblance-olate to obovate, mostly 9–50 cm; proximal cauline well developed, gradually reduced distally, clasping, faces not gland-dotted. Heads in flat-topped, corymbiform arrays. Peduncles glabrous. Involucres 3.5–5 mm. Phyllaries 5–12 in 1–2(–3) series, oblanceolate, gland-dotted, apices obtuse. Receptacles epaleate or partially paleate (paleae 1–2). Corollas glandular, lobes 0.8–1 mm. Cypselae glandular; pappus bristles in ± 1 series.
Varieties 2 (2 in the flora): se United States.
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Plants with strong odor of coumarin or vanilla; basal leaves usually more than 15 × 5 cm; midstem leaves broadly elliptic, margins often shallowly dentate, apices flared away from stems; primary head-bearing branches diverging from main axes at 10–20°; florets mostly 7–10 |
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2a Carphephorus odoratissimus var. odoratissimus |
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Plants with slight or no odor of coumarin or vanilla; basal leaves less than 15 × 4 cm; midstem leaves narrowly elliptic, margins entire, apices appressed to stems; primary head-bearing branches diverging from main axes at 30–45°; florets mostly 10–14 |
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2b Carphephorus odoratissimus var. subtropicanus |
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