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Nabalus: Dichotomous Key
...(9–) 11–29 flowers [Fig. 434] 2b. Lower leaf blades pinnately or palmately lobed or simple and then ovate to elliptic, the middle and upper blades short-petioled or sessile, but not clasp...
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Rudbeckia: Dichotomous Key
... 1a. Pappus absent; style appendages elongate and pointed; chaff sharply acute to acuminate and hispidulous near the apex; leaf blades toothed to entire, but not lobed 2a. Plants ...
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Alnus: Dichotomous Key
...(1961) described introgressed plants he observed in New Hampshire. Reference: Furlow (1979). 1a. Trees to 20 m tall; leaf blades obovate to suborbicular, rounded or retuse to obcordate...
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Erysimum: Dichotomous Key
...(7–) 8–18 mm long, commonly yellow; sepals (4–) 5–10 mm long 4a. Petals 12–18 mm long; sepals 6–10 mm long; anthers 2 mm long or longer 4b. Petals (7–) 8–10 (–12) mm long; se...
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Sagina: Dichotomous Key
...(1978). 1a. Petals 3–4.5 mm long, ca. 2 times as long as the sepals [Fig. 566]; upper leaf axils of stem usually bearing fascicles of minute, succulent leaves 1b. Petals 0...
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Calystegia: Dichotomous Key
...leaves 1–6 cm long 3b. Flowers not modified, with a single series of connate petals; stems glabrous or pubescent in ssp. americana; petioles of proximal leaves (1.5–) 5–10 cm long ...
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Pyrola: Dichotomous Key
...(1.7–) 2–4.1 mm long; petals 4–10 mm long; scape 10–30 cm tall 2a. Leaf blades 10–30 (–40) mm long, usually shorter than the petiole; anther tubes (0.6–) 0.7–1.1 mm long; petals green-whi...
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Bartonia: Dichotomous Key
...(1959). 1a. Stigmas, including the basal lobes, (1.3–) 1.5–2.3 mm long at maturity; petals oblong, rounded to obtuse at the apex and with a short, but prominent, apiculus; anthers apic...
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Spiraea: Dichotomous Key
...pedicels 10–24 mm long, pubescent 3b. Leaf blades narrow-lanceolate, glabrous on the abaxial surface; pedicels 6–10 mm long, glabrous 1b. Inflorescence a panicle or compound ...
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Agrimonia: Dichotomous Key
... 1a. Hypanthium densely and evidently hirsute in and between the furrows; petals 4–6 mm long 1b. Hypanthium glabrous or stipitate-glandular, sometimes with minute, eglandular hair...