What’s a dichotomous key?
Help
Clematis
See list of 6 species in this genus-
1a. Flowers and fruits solitary in axils of leaves [Fig. 812], with petaloid staminodes between the sepals and stamens; sepals 20–60 mm long
-
2a. Sepals 4 per flower, light red-purple to blue-purple, 25–60 mm long; style pubescent ± throughout its length in fruit
-
2b. Sepals 6 per flower, usually white, 20–30 mm long; style apically glabrous in fruit
-
-
1b. Flowers and fruits in many-flowered cymes or panicles; sepals 5–22 mm long, white to cream
-
3a. Stems ascending to erect, not vining; leaves with 5–9 leaflets; achene beak 12–20 mm long
-
3b. Stems vining (i.e., trailing or climbing on other vegetation); leaves with 3 or 5 leaflets; achene beak 20–60 mm long
-
4a. Leaves with 3 leaflets; flowers unisexual, the carpellate ones with 40–70 carpels
-
4b. Leaves with 3 or 5 leaflets; flowers bisexual (sometimes some staminate flowers mixed in the same inflorescence), with 5–10 carpels (20 or more in C. vitalba)
-
5a. Sepals adaxially glabrous and abaxially tomentose along margins; leaflet margins entire; flowers with 10 or fewer carpels
-
5b. Sepals adaxially and abaxially tomentose; leaflet margins entire to crenate or dentate; flowers with 20 or more carpels
-
-
-
Show photos of:
Each photo represents one species in this genus.