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Monarda: Dichotomous Key
... (5–) 10–15 (–20) mm wide 1b. Inflorescence consisting of a single terminal verticillaster of flowers (sometimes with a second verticillaster below the terminal one) [Fig. 701]; corolla p...
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Epilobium: Dichotomous Key
...(1982). 1a. Stigma 4-lobed; plants evidently long-villous; petals 10–16 mm long (only 4–9 mm in the very rare E. parviflorum) 2a. Petals 10–16 mm long, with a shall...
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Penstemon: Dichotomous Key
...al. 1998). The collection, if indeed determined accurately, would certainly represent an introduction. Reference: Clements et al. (1998). 1a. Corolla red, strongly zygomorphic, the upp...
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Phlox: Dichotomous Key
...(1929, 1930, 1931). 1a. Petals notched at apex [Fig. 781]; leaf blades stiff, with a single primary vein; stems suffrutescent 2a. Leaf blades (15–) 20–40 (–60) mm long; ax...
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Physalis: Dichotomous Key
...purple-streaked, 12–40 mm wide; flowering calyx 5–7 (–10) mm long 1b. Plants perennial from rhizomes; corolla 10–20 mm long; flowering calyx (4–) 6–12 (–15) mm long 5a. Corol...
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Ulmus: Dichotomous Key
...(1979) was based on a misidentified specimen—13 Aug 1904, Clark s.n. (YU). Reference: Sherman-Broyles (1997). 1a. Flowers serotinous, appearing in late summer; samaras not winged; mat...
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Vitis: Dichotomous Key
...(1991). 1a. Tendrils and/or panicles produced from 3–7 successive nodes; berries 10–20 (–25) mm thick; abaxial surface of leaf blades persistently pubescent with red-brown (later turni...
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Polystichum acrostichoides (Christmas fern)
... 10.0 NA–35.0 NA. Leaf blade shape: the leaf blades are widest above the base, then taper narrowly towards the tip (lanceolate). ...
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Picea abies (Norway spruce)
...cones 12–16 cm long, scales elliptic to rhombic, widest near the middle, and branches conspicuously pendulous).: Picea rubens Synonyms: P...
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Abies balsamea (balsam fir)
...7-12 cm long (vs. A. balsamea, with leaves 12-25 mm long and green, not or hardly glaucous, and seed cones 4-7 cm long).: Abies concolor winter buds not resinous, the ...