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Eleocharis palustris (common spikesedge)
...mm–2.2 mm. Inflorescence bracts: NA. Achene tubercle relative width: the tubercle is one half or le...
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Montia linearis (narrow-leaved montia)
...10-20 seeds (vs. M. linearis, with petals white to pale pink, 4-6.5 mm long, and capsules with 1-3 seeds).: Calandrinia ciliata sepals 1–2 mm long, petals 1–2 mm long,...
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Coreopsis tripteris (tall tickseed)
...12.0 mm–22.0 mm. Number of bracts at flower head base: 13.0 NA–14.0 NA. Leaf disposition: the lea...
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Eleocharis obtusa (blunt spikesedge)
...tubercles 2/3 to almost fully as wide as the achene body and styles usually trifid).: Eleocharis ovata tubercles 0.12-0.23 mm tall, styles usually bifid, and perianth ...
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Valerianella radiata (beaked corn-salad)
... 2.0 mm–2.5 mm. Number of pistils: 1. Sap: the sap is clear and watery. ...
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Family: Asteraceae (aster family)
...of 2 united carpels that usually have styles cleft in 2. The stamens are attached to the petals and usually have long anthers united into a tube. The fruit is a specialized type of achene called a cyp...
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Carex: Dichotomous Key
... 2a. Spikes 1 per stem; rachilla often present in perigynium 2b. Spikes normally 2 or more per stem (except depauperate individuals); rachilla absent from perigynium ...
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Rhynchospora: Dichotomous Key
...(2002b). 1a. Achenes 15–25 mm long including the 10–20 (–21) mm long tubercles; leaf blades 3–10 (–15) mm wide; style undivided or bifid only at tip 2a. Stems not cespitos...
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Bolboschoenus: Dichotomous Key
...achenes 2.5–3.3 mm long, with a minute, persistent style beak; veins of leaf sheaths gradually diverging near summit, leaving an obtriangular, veinless area 2b. Widest leaf blades 7–22 mm...
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Spiranthes: Dichotomous Key
...(1982), Sheviak and Brown (2002). 1a. Labellum with a deep, subapical constriction at ca. ⅔ distance from the base, prominently veined, the branches of the veins wide-spreading ...