Stems 2–8 mm wide; capsules 6–19 mm; tepals usually 12+ mm. > 3 2 Stems 0.5–2(–2.3) mm wide; capsules 3–9 mm; tepals usually less than 12 mm. > 4 3 Stems
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or ovate to obovate, 3.5-40 mm; petals usually absent (present in A. patens), distinct, plane, obovate to elliptic, 1.5-2 mm; nectary present; stamens 10-200;
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or not; branches not spikelike, not disarticulating. Spikelets 1-27 mm long, 0.5-9 mm wide, laterally compressed, with (1) 2-60 florets; disarticulation
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8–16 mm. Outer phyllaries 6–12, 3.9–9 (–11.5) mm, margins 0–0.4 mm wide, sometimes slightly scarious, abaxial faces ± hairy. Ray-florets 8–15 (–21); corollas
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ellipsoid to slightly obovoid, 3-ribbed. Seeds cylindric-fusiform. x = 20, 21. Mostly temperate regions, North America, Central America, 1 circumboreal
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then leaves alternate) > 21 21 Petals pink; flowers usually slightly bilaterally symmetric; leaves deciduous. Rhododendron 21 Petals white or pink, flowers
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1807–1883, physician and plant collector]] Treatment appears in FNA Volume 21. Treatment on page 396. Mentioned on page 5, 255, 364, 365, 366. Annuals or
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exserted, flattened distally, 0.2–1.1 mm diam., tip straight to recurved or coiled, distal (40–) 50–100% hairy, hairs to 4 mm; style glabrous, sometimes proximally
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nemorosa 20 Corollas 4.5–6.5 mm; bracts glossy, surfaces glabrous, tooth apices acute. Euphrasia micrantha 19 Corollas 3–5.5 mm. > 21 21 Stems branched from middle
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permanently investing capsule. > 21 21 Leaf blade flat, ± falcate, usually 3–6 mm wide; Box Elder County, Utah. Allium passeyi 21 Leaf blade channeled, ± straight
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abaxially > 21 21 Leaf blade margins sharply and uniformly serrate > 22 21 Leaf blade margins entire > 23 22 Shrubs 0.1-0.9 dm; leaf blades 2-6 mm wide. Vaccinium
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Michael Powell Etymology: Latin flavus, yellow Treatment appears in FNA Volume 21. Treatment on page 247. Mentioned on page 245, 248, 249, 250. Annuals, perennials
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1802–1856, early western American explorer Treatment appears in FNA Volume 21. Treatment on page 100. Mentioned on page 65, 66. Perennials, 15–60 (–100)
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peduncles). Involucres campanulate to hemispheric or broader, 4–25 (–35+) mm diam. Phyllaries persistent, (16–) 20–60 (–80+) in [2–] 3–7+ series, 1-nerved
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perianth and androecium epigynous, 10–55 mm diam.; hypanthium campanulate or funnelform to saucer-shaped, 3–9 mm diam., hairy or glabrous; sepals 5, erect
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(Christophorus Enzelius), 1517–1583, German naturalist Treatment appears in FNA Volume 21. Treatment on page 118. Mentioned on page 65, 66, 119, 120. Perennials, subshrubs
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Agnorhiza Jepson Man. Fl. Pl. Calif., 1077. 1925 Treatment appears in FNA Volume 21. Treatment on page 104. Mentioned on page 65, 66, 100. Perennials, 5–60 (–100)
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on page 207. Mentioned on page 204, 205, 206, 218. Plants (3–) 10–40 (–180) mm, in dense cushions to loose mats, olivaceous, green, brown, or black, often
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petiolaris); hypanthium free from or 1/4–3/4 adnate to ovary, free to 0.5 mm, usually green, rarely purplish; sepals 5, green, sometimes reddish at tips;
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through abscission of thin-walled cells at base. Seeds many, elliptic, 2–4 mm, bearing white or yellowish, large, oily, myrmecochorous elaiosome (aril)
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