Association Plants 25–50 (–100) cm. Basal leaves: blades (green, shining) lance-elliptic or oblong-lanceolate to lanceolate, 15–30 (–40+) cm, margins usually entire
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ascending to appressed, sometimes spreading. Basal leaves planar, (5–) 10–30 × 1.5–4 (–5) cm; stipules entire or basally lobed; leaflets 5–12 per side, separate
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suberect to flattened, 2–30 cm, blade deltate, apex apiculate drip-tip, mucro 1–2 mm; cauline leaves perfoliate, blade 1–10 cm diam., margins notched or
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limited to proximal pair of pinnae), 17–85 × 7–35 cm, sterile leaves (excluding erect fertile pinnae) 17–60 cm. Petiole straw-colored to chestnut-brown, 1/2–2/3
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plant, 6–30 × 0.2–0.3 cm; strobilus 1/3–1/7 total length; leaves spreading to ascending, 6–7 × 0.3–0.5 mm, marginal teeth 1–10 per side. Strobili 20–60 × 12–20
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page 219, 349, 351, 354, 360, 361, 370. Annuals, 10–200 cm, taprooted, or perennials, 10–100 cm, with deeply seated, woody caudices or stout or slender
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blackish, filiform or somewhat tuberous. Stems erect, not scapose, 15-50 (-60) cm, glabrous. Leaves basal and cauline; proximal cauline leaves petiolate,
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5-nerved, strigillose to hirtellous; pappi persistent, of 60–80 (–120), white, barbellulate bristles. x = 30. sw United States, Mexico, Central America Species
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Volume 20. Treatment on page 627. Mentioned on page 543. Perennials, 15–60 cm (caudices branched). Stems 1–5+, erect to spreading. Leaves cauline; alternate;
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Illustrator: Barbara Alongi Copyright: Flora of North America Association Plants 60–150 cm. Leaves: petiole 3–8 mm; blade elliptic to ovate, 15–45 × 4–26 mm, glabrous
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Volume 17. Treatment on page 47. Mentioned on page 24, 44. Annuals. Stems 7–170 cm, not self-supporting, glabrous, eglandular-hairy, or glandular-hairy; branches
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Receptacles flat, smooth or minutely alveolate, epaleate. Ray-florets (10–) 20–30 [–60+], pistillate, fertile; corollas yellow, laminae 1.5–2+ mm. Disc-florets
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Volume 20. Treatment on page 635. Mentioned on page 541. Perennials, 5–30 (–50) cm (rhizomes fibrous-rooted, creeping; plants forming extensive colonies)
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tubes (5–) 8–12 (–17) mm; pedicel/tube ratio (15–) 30–60 (–126) %; fruit awns (3.5–) 4.5–7.5 (–12.5) cm. Phenology: Flowering Mar–May. Habitat: Rocky slopes
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all flowers but terminal one on each branch often replaced by bulbils, 3–30 cm, stipitate-glandular; bracts (proximal ephemeral), petiolate or sessile.
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forming paniculiform arrays. Peduncles 0–4 (–8) cm. Involucres ovoid to hemispheric, 1.5–3 cm, 2–4.5 cm diam, loosely arachnoid on phyllary margins or glabrate
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all equal or abaxial spine longest. Flowers apical or nearly so, 30–50 (–60) × (30–) 40–70 mm; outer tepals heavily fringed; inner tepals 20–25 per flower
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14, 487, 547, 548. Annuals (biennials) [perennials, subshrubs], mostly 5–90 cm (often aromatic). Stems 1–5+, erect to decumbent, usually branched, strigillose
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usually 40-60 cm long, 7-25 mm wide, glabrous. Peduncles 45-75 cm, usually glabrous, occasionally pubescent or minutely pilose; panicles 3-10 cm wide, linear
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Aerial shoots 10-30 (-40) cm, from caudexlike tubers, tubers ascending to vertical. Basal leaves 1-3 (-5), 1-2-ternate; petiole 5-7 cm; terminal leaflet
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