5–20+ mm diam. Phyllaries 15–21 in 2 (–3) series, lanceolate to lance-linear. Receptacles flat to conic. Ray-florets 10–21+ in ± 1 series; corollas usually
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to hardened paleae enfolding disc cypselae Treatment appears in FNA Volume 21. Treatment on page 137. Mentioned on page 135. Annuals [perennials or subshrubs]
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genusCratoneuron Show Lower Taxa Cratoneuron filicinum (Sullivant) Spruce Cat. Musc., 21. 1867. Lars Hedenäs Etymology: Greek cratos, strong, and neuron, nerve, alluding
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stevioides, Chaenactis xantiana James D. Morefield Treatment appears in FNA Volume 21. Treatment on page 408. Mentioned on page 401, 409, 410. Annuals; proximal
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petiole (3–) 6–13 (–22) mm; blade suborbiculate to oval or obovate, (14–) 21–36 (–63) × (9–) 16–32 (–54) mm, base usually rounded to subcordate, sometimes
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a soothsayer of renown in Greek mythology Treatment appears in FNA Volume 21. Treatment on page 34. Mentioned on page 33. Annuals, perennials, or subshrubs
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alluding to cypselae half enfolded by phyllaries Treatment appears in FNA Volume 21. Treatment on page 291. Mentioned on page 254, 256, 276, 280, 289, 290, 294
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coneflower Mexican-hat Etymology: Derivation unknown Treatment appears in FNA Volume 21. Treatment on page 60. Mentioned on page 43. Perennials, 15–120 cm. Stems
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uncertain perhaps for Ajuga iva, a mint with similar odor Treatment appears in FNA Volume 21. Treatment on page 25. Mentioned on page 9. Annuals, perennials, subshrubs
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narrower than the central portion. > 21 21 Axes of panicle branches 1-1.7 mm wide; spikelets 1.8-2.4 mm wide Paspalum virgatum 21 Axes of panicle branches 0.5-1
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usually glabrous, rarely sparsely glandular-puberulent; without rhizomes > 21 21 Basal leaves deeply incised, lobes again incised, segments linear to oblong-elliptic;
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to turbinate, 2–10+ mm diam. Phyllaries persistent, usually (5), 8, 13, or 21 in 1–2 series, erect (sometimes reflexed in fruit), distinct (margins ± interlocking)
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to conic or hemispheric (sometimes hairy), epaleate. Ray-florets usually 10–21+ (pistillate and fertile or neuter; corollas pale-yellow to yellow or white
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blade oblanceolate-oblong in outline, 1–25 cm, foliaceous, leaflets 5–13 (–21), distinct, terminal not confluent with distalmost lateral pair, not or scarcely
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strigillose; ray florets 13–21+ > 21 21 Heads usually on scapiform peduncles 5–60+ mm, sometimes sessile; cypselae 4.5 mm Townsendia montana 21 Heads usually sessile
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× (16–) 26–40 (–56) cm, base cordate to rounded, each margin with (0–) 11–21 (–30) teeth on proximal 1/2 and (3–) 5–9 (–13) teeth in distalmost cm, largest
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plants when mature larger than 1 cm > 21 21 Sexual condition dioicous; exostome teeth acuminate. Orthotrichum lyellii 21 Sexual condition autoicous; exostome
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Grimmia hartmanii 21 Leaves narrowly ovate-lanceolate to linear-lanceolate, distinctly incurved or contorted when dry. Grimmia incurva 21 Leaves lanceolate
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dioecious amaranths: A new species name and major range extensions. Madroño 21: 426–434. Uline, E. B. and W. L. Bray. 1894. A preliminary synopsis of the
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lanata Pursh Fl. Amer. Sept. 2: 560. 1813 Treatment appears in FNA Volume 21. Treatment on page 357. Mentioned on page 353, 354, 361, 362. Perennials or
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