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Myrica gale (sweetgale)
... 1. Leaf stalk: the leaves have leaf stalks. Leaf blade scales: there are no scales on...
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Sanguisorba canadensis (Canada burnet)
... 1.0 None–1.0 None. Stipule features: NA. Sepal and petal color: NA. ...
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Scrophularia nodosa (woodland figwort)
...wing-margined, 1/3 to 1/2 as long as the blade, and corolla 5–8 mm long (vs. S. nodosa, with leaf blades acute at the apex, petiole wing-margined, less than 1/3 as long as the blade, and corolla 7–10 ...
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Aristolochiaceae: Dichotomous Key
... 1a. Plants without aerial stems, herbaceous; calyx actinomorphic, the basal, tubular portion straight; flowers with 12 stamens 1b. Plants with aerial stems, woody or herbaceous; ...
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Moraceae: Dichotomous Key
...(1988), Wunderlin (1997). 1a. Plants herbaceous, annual; proximal portion of first pair of primary lateral veins at the very margin of the leaf blade (i.e., the basiscopic side of the...
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Adiantum: Dichotomous Key
...(1993), but specimens are unknown. References: Paris (1991, 1993). 1a. Ultimate segments of leaves ± oblong, rounded to obtuse at the apex [Fig. 32], in the same plane with the axis of...
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Taxus: Dichotomous Key
... 1a. Winter bud scales blunt at the apex, slightly keeled; leaf blades gradually tapering to the apex [Fig. 49] 1b. Winter bud scales sharply pointed to cuspidate, definitely kee...
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Dennstaedtiaceae: Dichotomous Key
...broad-lanceolate, 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 b...
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Pinaceae: Dichotomous Key
...of 10–60 [Fig. 44]; each scale of a strobilus without an umbo; bracts exserted in basal portion of strobilus 2b. Leaves persisting more than 1 year, those of the short shoots in fascicles...
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Potamogetonaceae: Dichotomous Key
...(1980), Wiegleb and Kaplan (1998). 1a. Leaves opposite; flowers unisexual; staminate flowers with 1 stamen; stigma funnelform 1b. Leaves alternate; flowers bisexual, with ...