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Araceae: Dichotomous Key
...2–21 roots, the lower surface red-purple, the upper surface with (3–) 5–16 (–21) veins 5a. Thalli with (5–) 7–16 (–21) veins, 1–1.5 times as long as wide; roots numbering 7–21 per thallus...
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Alismataceae: Dichotomous Key
...(1981), Haynes and Hellquist (2000a). 1a. Androecium composed of 6 stamens; gynoecium with a single whorl of carpels on a small, flat receptacle; inflorescence a panicle 1...
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Diapensiaceae: Dichotomous Key
... 1a. Leaves opposite, with entire blades 0.5–1.5 cm long; flowers lacking staminodes 1b. Leaves all basal, with toothed blades 2–10 cm long; flowers with 5 staminodes ...
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Section Phaestoglochin: Dichotomous Key
...perigynium 1–1.5 mm long 5b. Stigmas 1- to 3-times coiled, 0.05–0.1 mm wide; spongy base of perigynium 0.5–1.3 mm long 6a. Widest leaves 0.9–1.5 mm wide; base of flowering st...
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Eriocaulon: Dichotomous Key
... 1a. Inflorescence subglobose, pale gray to white, 4–5 (–10) mm wide; bractlets evidently pubescent with clavate hairs; flowering scape with (4–) 5–7 ridges; each rosette of leaves producing u...
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Ornithogalum: Dichotomous Key
...[Fig. 128], with 5–12 (–18) flowers; pedicels nodding, especially after anthesis, the lower up to 1 cm long; filaments with 2 lateral teeth near the apex; leaves 5–10 mm wide 1b. Inflores...
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Briza: Dichotomous Key
... 1a. Ligules 0.5–1 mm long, truncate at apex; leaves mostly confined to the basal portion of the plant; anthers 1.3–2 mm long; plants perennial 1b. Ligules 4–13 mm long (rarely lo...
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Triticum: Dichotomous Key
...(1973); however, the voucher specimen was collected from a cultivated plant—6 Aug 1912, Dutton s.n. ( VT!). 1a. Stems hollow below spikes; glumes usually with a well-deve...
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Phalaris: Dichotomous Key
...lemmas 1–2 mm long 1b. Plants annual, without rhizomes; keel of glumes winged [Fig. 250]; panicle 1.5–4 cm tall, very dense; glumes 7–10 mm long; sterile lemmas 2.5–4.5 mm long ...
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Polygonatum: Dichotomous Key
... 1a. Leaves glabrous on both surfaces, with 7–19 prominent veins; axillary peduncles with 2–10 (–15) flowers; distinct portion of tepals (i.e., the lobes) 4–6.5 mm long 1b. Leaves...