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
- Rhamnaceae
- Ceanothus
Ceanothus
See list of 2 species in this genus-
1a. Leaf blades elliptic to oblong or narrow-oblong, 10–25 mm wide; inflorescence on peduncles terminating the branchlets of the current season; fruits 4–5 mm long; lowest pair of lateral veins of the leaf blade emerging 1–3 mm above the base of the blade, the outer margin of the vein within the lateral edge of the blade
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1b. Leaf blades narrow-ovate to broad-ovate, 20–60 mm wide; inflorescence terminating axillary peduncles; fruits 5–6 mm long; lowest pair of lateral veins of the leaf blade emerging 1–3 mm below the base of the blade, the outer margin of the vein forming the basal lateral edge of the blade [Fig. 823]
Show photos of: Each photo represents one species in this genus.