Page 117: 3,316 results for 2
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Potamogetonaceae: Dichotomous Key
...with 2 or 4 stamens; stigma slender to capitate 2a. Leaf blades narrow-linear, 0.2–1.5 mm wide, all submersed, cross-septate throughout; stipules connate to the blade for a distance of 4–...
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Hyacinthaceae: Dichotomous Key
...127]; stamens epipetalous 2a. Perianth urceolate to cylindric [Fig. 127]; tepals connate for most of their length; leaf blades 2–8 mm wide; racemes with usually 12–20 flowers, dense [Fig....
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Ranunculaceae: Dichotomous Key
...12a. Flowers with 4 distinct petals and 3 carpels; ultimate lobes of leaf blades 5–25 mm wide; plants perennial, from fasciculate roots 12b. Flowers with 2 connate petals and 1 carpel; ul...
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Section Vulpinae: Dichotomous Key
...(2002). 1a. Perigynia rounded and inconspicuously spongy-thickened at the base, adaxially without veins; sheaths red- or brown-dotted near the margins; achenes circular in outline ...
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Najas: Dichotomous Key
...1.9–2.2 mm long 2b. Axis of seeds straight; style situated off to one side of seed apex; leaf blades ascending to spreading, the margins with minute, unicellular teeth that usually requir...
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Poaceae Group 10: Dichotomous Key
...1–12 bristles [Fig. 269]; inflorescence a solitary, terminal, spike-like panicle [Figs. 268, 270] (in part) 5b. Spikelets not subtended by bristles; inflorescence an open to dense panicle...
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Bouteloua: Dichotomous Key
...(12–) 30–80 branches [Fig. 192]; central awn of lowest lemma not flanked by lateral lobes (i.e., the lemma with 3 total lobes) 3b. Inflorescence with (3–) 6–12 branches; central awn of lo...
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Hordeum: Dichotomous Key
...[Fig. 236]; glumes 7–20 mm long including the awns; glume awns not or scarcely bent outward, erect to ascending; fertile lemmas with an awn 5–10 (–20) mm long 2b. Plants annual; awns sto...
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Catalpa: Dichotomous Key
... 2a. Limb of corolla (2–) 3–4 cm wide, the adaxial surface densely spotted with purple-brown; capsule 6–10 mm thick, with a thin placenta; seed wings typically acute to acuminate at the apices...
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Cynoglossum: Dichotomous Key
... 2a. Corolla red-purple (rarely white); calyx 3–5 mm long at anthesis 2b. Corolla blue to blue-purple (rarely white); calyx 2–3 mm long at anthesis 3a. Limb of coroll...