with branching caudex, stout, 7–30 cm, glabrous or sparsely stipitate-glandular distally. Taproots slender to moderately stout. Stems erect to ascending
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oblanceolate, (2.8–) 3–3.8 mm, margins moderately calloused, short-hairy; pappi 0, or of 1 (–4) moderately stout bristles (1–) 2.2–3 mm. 2n = 34, 68. Phenology:
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margins thin-calloused, short-hairy; pappi usually 0, sometimes of 1–3 moderately stout bristles 2.8–4.5 mm, often plus hyaline, laciniate scales. 2n = ca
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appears in FNA Volume 2. Stems occasionally whitish pruinose, slender to moderately stout, to 6 mm diam., acrid to sweet-tasting: scales concolored, brown or
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cordate to truncate, margins serrate to dentate. Pedicels slender to moderately stout, densely villous. Flowers: corolla dark brown-red, unicolored, sometimes
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truncate to slightly rounded, margins serrate to dentate. Pedicels moderately stout, glabrate or stipitate-glandular. Flowers: corolla brown-red to green
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pruinose; prickles moderate to dense, erect to retrorse or hooked, weak to moderately stout, 4–10 mm, narrow to broad-based. Leaves deciduous or persistent, usually
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straight to ± recurved, 2-years old shiny blackish purple, slender to moderately stout, 4–7 cm. Leaves deciduous; petiole length 20–30% blade, glabrous; blade
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twigs ± straight to ± recurved, 2-years old bright redbrown, slender to moderately stout, 4–5 cm. Leaves deciduous; petiole very slender, length 50–60% blade
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corolla throats narrowly tubular to narrowly funnelform; pappus bristles moderately stout > 12 12 Leaf blades 15–30 mm wide; phyllaries 14–20; Arizona Perityle
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taproots 4–15+ cm. Stems 5–10+, often branched in distal 1/3, moderately stout to stout, not wiry, hispid or minutely stipitate-glandular. Leaves: basal
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taproots 1–6+ cm. Stems 5–15+, often much branched in distal 1/2, moderately stout to stout, not wiry, hispidulous, sometimes minutely stipitate-glandular
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usually all deflexed, yellow with whitish to pinkish basal coating, moderately stout to acicular, the longest 1.5–2.8 cm; sheaths whitish at bases to golden
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page 384. Annuals, 25–60 cm; taproots 2–8+ cm. Stems 1, branched, moderately stout to stout, not wiry, stipitate-glandular. Leaves: basal usually withering
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Stems 1–15+, often branched at base or throughout, moderately stout to stout, not wiry, moderately hairy (hairs antrorsely appressed). Leaves: basal often
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lanceoloid to ovoid, moderately congested, with 6-20 (25) spikelets; nodes with 1-2 branches; branches 0.5-1.5 (2) cm, erect, moderately stout, terete or weakly
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spikelets; nodes with 1-3 branches; branches 1-3 (4) cm, moderately stout, smooth to moderately scabrous, with 1-8 spikelets. Spikelets 7-10 mm. Calluses
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slightly to moderately congested; nodes with 2-5 branches; branches ascending to widely spreading, fairly straight, slender to moderately stout, angled, angles
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contracted, with 20-70 spikelets; nodes with 2-5 branches; branches 1-3 cm, moderately stout, smooth to sparsely scabrous, with 1-8 spikelets. Spikelets (3) 4-8
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dark gray, ± stout; thorns on twigs usually numerous, straight or slightly recurved, 1-year old blackish or purple-brown, moderately stout, 2–4.5 cm. Leaves:
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