What’s a dichotomous key?
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- Group 1Lycophytes, Monilophytes
- Group 2Gymnosperms
- Group 3Monocots
- Group 4Woody angiosperms with opposite or whorled leaves
- Group 5Woody angiosperms with alternate leaves
- Group 6Herbaceous angiosperms with inferior ovaries
- Group 7Herbaceous angiosperms with superior ovaries and zygomorphic flowers
- Group 8Herbaceous angiosperms with superior ovaries, actinomorphic flowers, and 2 or more distinct carpels
- Group 9Herbaceous angiosperms with superior ovaries, actinomorphic flowers, connate petals, and a solitary carpel or 2 or more connate carpels
- Group 10Herbaceous angiosperms with superior ovaries, actinomorphic flowers, distinct petals or the petals lacking, and 2 or more connate carpels
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- Dichotomous Key
- Vitaceae
- Parthenocissus
Parthenocissus
See list of 3 species in this genus-
1a. Leaves simple or sometimes compound with 3 leaflets; plants introduced, normally found growing on buildings
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1b. Leaves compound, usually with 5 leaflets; plants native, normally growing on the ground or on other plants
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2a. Tendrils contacting substrate only slightly expanded near apex, the expanded region narrow-oblong in outline and not more than 3 times the width of the ultimate tendril segments [Fig. 941, L]; inflorescence mostly 10- to 60-flowered, without a central axis, normally with 2 subequal branches; berry 8–10 mm long; leaflets of mature leaves (i.e., those from the proximal portion of season’s growth) borne on petiolules 5–20 (–30) mm long
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2b. Tendrils contacting substrate conspicuously expanded near apex, the expanded region oblong to circular in outline and more than 3 times the width of the ultimate tendril segments (though tendrils near shoot apex may lack expanded regions) [Fig. 941, R]; inflorescence mostly 25- to 200-flowered, with a central axis; berry 5–7 mm long; leaflets of mature leaves sessile or borne on petiolules to 10 mm long
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Show photos of: Each photo represents one species in this genus.