basal veins, 30–45 (–60) × 10–30 cm, veins pubescent primarily along veins with flattened, whitish hairs. Inflorescences 250–500-flowered, 15–40 cm; peduncle
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usually white, sometimes blue or pink, laminae (8–) 18–30 × 1.1–1.4 mm. Disc-florets (8–) 18–30; corollas yellow becoming brown, 2–2.5 mm, lobes triangular
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219. Annuals or biennials [perennials, shrubs, sometimes spiny], [5–] 30–150 cm; usually taprooted [stoloniferous]. Stems erect [prostrate], distally branched
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on page 542. Perennials or subshrubs [shrubs, or trees], [20–] 60–100 (–300) [–800] cm (caudices woody, fibrous-rooted, often woolly). Stems single or
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19. Treatment on page 175. Mentioned on page 57, 84, 176, 182. Annuals, 30–200 cm, not spiny. Stems erect, branched. Leaves basal and cauline; petiolate
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obovate to oval, densely villous. Inflorescences (10–) 30–200-flowered, 3–8 (–30) cm diam. Pedicels 5–30 mm. Flowers 5–8 mm diam.; epicalyx bractlets oblong
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alternate; petioles 0.5–1.5 cm; blades light to dark green, 3-nerved (distal to bases) ± lanceolate to ± ovate, 4–20 × 0.8–4 cm, bases cuneate, margins entire
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lanceolate, linear, oblong, oblongelliptic, obovate, oval, or ovate, 0.2–3.9 (–4.6) cm, smooth to rugose or plicate, margins usually flat, sometimes revolute, crenate
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on page 122. Mentioned on page 65, 66, 119. Annuals or perennials, 10–100 cm. Stems erect, branched (branches ascending). Leaves basal and cauline; alternate;
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FNA Volume 21. Treatment on page 521. Mentioned on page 513, 534. Plants 30–120 cm. Corms depressed-globose or globose to napiform. Stems puberulent to hirsute-puberulent
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palmately nerved, sagittate, deltate, or reniform to cordate, 2–25 × 2–27 cm, margins lobed (primary lobes 0–14, entire or dentate, secondary lobes 0–25
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Treatment on page 70. Mentioned on page 64, 65. Annuals or perennials, (3–) 10–30 cm. Stems prostrate to erect, branched from bases or ± throughout. Leaves cauline;
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or palmati-pinnately nerved, sagittate or triangular to oblong, 2–34 × 2–30 cm (bases sagittate or cordate, sometimes hastate), margins not lobed (subentire
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slightly compressed, 5 (–6) -nerved, faces glabrous; pappi persistent, of 30–60 tawny, barbellate, apically attenuate bristles in 1–2 series, usually plus
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Volume 20. Treatment on page 39. Mentioned on page 13, 16. Perennials, 10–160 cm (usually cespitose, induments usually of stipitate-glandular and smooth-surfaced
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vegetative culms 10–30 (–50) cm; those of fertile culms green, flat or folded, less than 18 cm × 1.5–5.5 mm. Inflorescences 4–19 cm, 1.2–2 times longer
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cylindric [flattened and leaflike in some epiphytic species], 100–500 × 0.8–5 [–30] cm, glabrous; ribs [3–] 4–8 [–12] [or 2-winged in some epiphytic species],
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384. Subshrubs, 3–35 cm (tufted or densely cespitose, often mound-forming); caudices much branched, taproot 2–20+ cm. Stems 10–30+, simple or branched
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in basal rosettes, living at anthesis, 5–25 (–40) cm; petiole often narrowly winged distally, 0.1–20 cm, usually shorter than blade; blade usually elliptic
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Susan A. Reznicek Copyright: Flora of North America Association Culms 15–75 cm. Leaves: basal sheaths reddish; blades of flowering-stems channeled or involute
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