or notched, longest 3.5–11.2 cm; stem roots present or absent. Stems to 3.1 m. Buds rounded in cross-section. Leaves in 2–8 whorls or partial whorls, 3–16
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margin. Barkworth, M.E. 1997. Taxonomic and nomenclatural comments on the Triticeae in North America. Phytologia 83:302-311 Barkworth, M.E. 2000. Changing
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palustris varietyThelypteris palustris var. pubescens (Lawson) Fernald Rhodora 31: 34. 1929. Alan R. Smith Basionym: Lastrea thelypteris var. pubescens Lawson
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often fugaceous and withered at anthesis; blade linear to linearlanceolate, 3–31 × 0.3–2 cm. Spikes dense. Flowers not resupinate, showy, white; lateral sepals
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familySaxifragaceae genusHeuchera speciesHeuchera alba Rydberg Torreya 26: 31, plate 2. 1926,. Elizabeth Fortson Wells, Barbara Greene Shipes Treatment
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Treatment appears in FNA Volume 27. Treatment on page 473. Illustrator: Patricia M. Eckel Copyright: Flora of North America Association Plants irregularly branched
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resinous). Staminate florets 18–35; corollas 4.2–5 mm. Pistillate florets 19–31; corollas 2.5–3.5 mm. Cypselae 2–2.6 mm, finely 8–10-nerved, glabrous; pappi
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North America Association Plants not cespitose; rhizomes long. Culms erect, 5–31 cm. Leaves: sheaths and bases from previous year’s leaves persistent; blades
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Treatment appears in FNA Volume 27. Treatment on page 630. Illustrator: Patricia M. Eckel Copyright: Flora of North America Association Capsule commonly wide-mouthed
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Polypodium polypodioides var. michauxianum Weatherby Contr. Gray Herb. 124: 31. 1939 Treatment appears in FNA Volume 2. Stems long-creeping, much branched
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yellow-green, oblong to rounded, 5-9 × 4-8 mm; stamens 15-23 mm. Follicles 15-31 mm; beak 10-18 mm. 2n = 14. Phenology: Flowering spring–summer (Mar–Jun).
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subtribe Pectidinae genusTagetes speciesTagetes micrantha Cavanilles Icon. 4: 31, plate 352. 1797. John L. Strother Illustrated Treatment appears in FNA Volume
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ambrosiifolia (A. Gray) A. Gray Treatment appears in FNA Volume 21. Treatment on page 31. Illustrator: Yevonn Wilson-Ramsey Copyright: Flora of North America Association
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varietyPenstemon ambiguus var. laevissimus (D. D. Keck) N. H. Holmgren Brittonia 31: 104. 1979. Craig C. Freeman Illustrated Basionym: Penstemon ambiguus subsp
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speciesPohlia lescuriana (Sullivant) Ochi J. Fac. Educ. Tottori Univ., Nat. Sci. 19: 31. 1968. A. Jonathan Shaw Illustrated Basionym: Bryum lescurianum Sullivant
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varietyHygroamblystegium varium var. humile (P. Beauvois) Vanderpoorten & Hedenas J. Bryol. 31: 131. 2009. Alain Vanderpoorten Basionym: Hypnum humile (P. Beauvois) Ochyra
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familyPlantaginaceae genusPlantago speciesPlantago ovata Forsskål Fl. Aegypt.-Arab., 31. 1775. Alexey Shipunov Common names: Desert Indian-wheat Illustrated Synonyms:
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Illustrator: Susan A. Reznicek Copyright: Flora of North America Association Culms 7–31 cm. Leaf-blades involute, bristlelike, 3–21 cm × 0.2–1 mm. Inflorescences:
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level, 1.3-2.5 times as long as trophophore; sporangial clusters 2-4 × 0.13-0.31 cm, pairs of sporangia 20-40, apiculum 0-1.3 mm. Phenology: Leaves appearing
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seen from that state. In M. laxum the submersed leaves are usually whorled but often irregular and sometimes alternate; in M. humile the leaves are usually
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