Page 72: 3,316 results for 2
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Dennstaedtiaceae: Dichotomous Key
...12–25 (–30) cm wide; nectaries absent; base of petiole with 1 or 2 vascular bundles 1b. Sori in a marginal band not borne in cup-like structures; false indusium formed by a ± elongate, r...
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Pinaceae: Dichotomous Key
...of 2–60 on short shoots 2a. Leaves annually deciduous, those of the short shoots in spirally arranged tufts of 10–60 [Fig. 44]; each scale of a strobilus without an umbo; bracts exserted ...
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Melanthiaceae: Dichotomous Key
... 2a. Ovary partly inferior; anthers mesifixed; seeds twisted and flattened at the ends, unwinged; plants arising from bulbs, lacking rhizomes 2b. Ovary superior; anthers basifixed...
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Oleaceae: Dichotomous Key
... 2a. Flowers precocious, with yellow corollas; leaf blades toothed; branchlets with hollow or chambered pith 2b. Flowers not appearing well in advance of leaf emergence, with whit...
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Amaranthaceae: Dichotomous Key
...Spikes 20–28 mm in diameter, white, yellow, red, or purple, showy; style terminated by 2 subulate or filiform stigmas; plants annual, from fibrous roots 4b. Spikes 6–8 mm in diameter, mai...
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Lilium: Dichotomous Key
... 2b. Flowers nodding; tepals gradually narrowed in the basal portion; inflorescence with (1–) 2–22 flowers 3a. Style similar in color to the tepals; tepals merely somewhat recurv...
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Goodyera: Dichotomous Key
...a 2-pronged beak; scape with 2–7 bracts 2a. Labellum 4.9–7.9 mm long; leaf blades typically white only on the midvein [Fig. 165]; beak of the rostellum 2.3–3.6 mm long 2b. La...
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Cypripedium: Dichotomous Key
...(2002a). 1a. Plants with 2 basal leaves, the stem scapose; labellum with a cleft along its entire length on the adaxial (i.e., upper) surface 1b. Plants with 2–9 leaves al...
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Poaceae Group 6: Dichotomous Key
... 2a. Panicle with (2–) 4–6 (–9) digitately arranged branches, lacking an elongate, central axis; plants mat-forming by stolons (and often also rhizomes) 2b. Panicle with (1–) 2–80...
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Chloris: Dichotomous Key
...or 2 sterile, apical florets, the third floret often represented by only a rachilla segment 2b. Plants perennial; leaf blades 2–4 mm wide; ligules 0.7–1.3 mm long; spikelets with a lower ...