Page 100: 3,316 results for 2
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Wolffia: Dichotomous Key
... 2a. Thalli rounded at each apex, with a large, prominent papilla in the center of the upper surface, 1–1.5 times as long as wide [Fig. 62] 2b. Thalli with a minute, upward-bent p...
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Trichophorum: Dichotomous Key
...(2002b). 1a. Stems terete, smooth 1b. Stems trigonous, usually scabrous on the angles 2a. Perianth bristles white, flattened, 3–5 times longer than the inflor...
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Section Squarrosae: Dichotomous Key
...Group 2 > Section Squarrosae. Section Squarrosae. 1a. Carpellate spikes with widely radiating perigynia, the lower of each spike often reflexed; achenes 1.1–...
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Section Carex: Dichotomous Key
...72]; leaf blades not minutely papillose abaxially; ligules 2–12.5 mm long 2a. Leaf sheaths, and often the blades, pubescent; staminate scales, and often the carpellate scales, pubescent ...
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Isotria: Dichotomous Key
...15–25 mm long [Fig. 167]; labellum 15–25 mm long; peduncle 20–55 mm long, at least as long as the ovary; non-flowering plants only rarely with a white, arrested floral bud; plants long-rhizomatous, fo...
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Corallorhiza: Dichotomous Key
...162]; lateral sepals spreading to down-curved; plants flowering mid-May through late-August 2a. Labellum (3.5–) 4–9 mm long, white spotted with red-purple (rarely pure white) [Fig. 162];...
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Cenchrus: Dichotomous Key
...(2003). 1a. Bur-like fascicles with 45–75 bristles [Fig. 204], 8.3–11.9 mm long, the outer bristles terete, the inner bristles 0.5–0.9 (–1.4) mm wide at the base; carypsis 1.5–2.6 mm w...
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Phleum: Dichotomous Key
... 2a. Inflorescence 1–3 cm tall; glumes acuminate at apex 2b. Inflorescence 3–8 cm tall; glumes subacute at apex 1b. Plants perennial; reproductive stems 20–100 cm tal...
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Cinna: Dichotomous Key
...nearly 25% of the total width of the glume; anthers 0.5–0.8 mm long; branches of the panicle spreading to drooping; lemma awn 0.1–2.5 mm long, commonly longer than 0.5 mm; leaf blades 6–25 cm long; pa...
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Andropogon: Dichotomous Key
...0.6–2.2 mm long; mature peduncles of the rames (4–) 11–35 (–60) mm long 2b. Leaves with smooth sheaths, the blades 11–30 (–52) cm long; ligules 0.2–1 mm long; mature peduncles of the rame...