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Carex davisii (Davis' sedge)
...with 2 prominent ribs but otherwise nerveless, green to gold-green at maturity, 2.5-4 mm long (vs. C. davisii, with perigynia with 2 prominent ribs and 9-12 veins, becoming dull orange-brown at maturi...
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Barbarea stricta (upright yellow-rocket)
...mostly 2-3 mm wide, siliques mostly 31-40 mm long, and pedicels 3-7 mm long in fruit (vs. B. stricta, with petals mostly 0.5-1 mm wide, siliques mostly 18-28 mm long, and pedicels mostly 1-3 mm long i...
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Solidago erecta (slender goldenrod)
... 2.5 mm–3.5 mm. Leaf blade width: 5.0 mm–25.0 mm. Ovary length in developed fruit: 2.2 mm–3.0 ...
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Anthoxanthum odoratum (large sweet grass, sweet vernalgrass)
... 2.0 NA–7.0 NA. Inflorescence branch length: 10.0 cm–25.0 cm. Lemma awn base: the awn is ...
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Section Acrocystis: Dichotomous Key
...(0.2–) 0.3–1.2 mm long; remnants of old leaves slightly to strongly fibrous; reproductive stems 1.9–20 (–27) cm tall; achenes 1.4–2 mm long; perigynia (2.5–) 2.8–3.7 (–3.9) mm long 9a. Wi...
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Platanthera: Dichotomous Key
...(2002b). 1a. Labellum simple, not divided into 3 portions, the margins entire, toothed, or fringed [Figs. 172, 175] 2a. Principal leaves all basal, the scapose stems with...
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Berteroa mutabilis (roadside false alyssum)
...styles 2-3 mm long (vs. B. mutabilis, with siliques 6-12 x 3.5-5 mm and glabrous to sparsely pubescent, fruiting pedicels wide-ascending, and styles 1-2 mm long).: Berteroa incana ...
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Coreopsis pubescens (hairy tickseed)
...('petals' of the compound flower). Its Southeastern distribution means it is not native to New England, having been recorded only from Connecticut and Massachusetts. Habitat: anthropogenic...
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Sisyrinchium angustifolium (narrow-leaved blue-eyed-grass)
...S2) Information from Dichotomous Key of Flora Novae Angliae: 2. Sisyrinchium angustifolium P. Mill. N narrow-leaved blu...
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Agrostis hyemalis (winter bentgrass)
...1.4-2 mm long (vs. A. hyemalis, with glumes 1-2 mm long and lemmas 0.8-1.2 mm long).: Agrostis scabra Synonyms: Cornucopiae hyemalis ...