Clematis Viorna Group

Origin: Cultivars are mainly derived from species belonging to the botanical subgenus Viorna, for at least one parent, from species like Clematis crispa, Clematis pitcheri, Clematis texensis and Clematis viorna.
Habit: Subshrubs or climbing, deciduous.
Leaf: Pinnate, rather leathery, petioled. Leaflets simple or ternate, the terminal reduced, margin entire or lobed.
Inflorescence: Terminal and axillary, sometimes a solitary flower or a few flowered dichasial cyme. On young shoots usually with a terminal flower first and then from the base upwards or upwards from the base on a growing shoot sometimes followed with a terminal flower.
Bracts: Present, leaflike but usually simple.
Flower: Bisexual, nodding or more or less so, urceolate, up to 3 cm long, bud nodding.
Tepals: 4, white, yellow, purple, pink, red to violet.
Stamens: Hairy.
Flowering time: Late spring into early autumn.
Seed tail: Either plumose or not, seedhead not persistant.
Zone: 7-11 (EU & USDA zones).
Hard pruning.
Planting depth: About 5 cm deeper as in the pot, so slightly deeper.
Roots: Fleshy.
Leaves in seedlings: Opposite.



ref: Wim Snoeijer (2008) Clematis Cultivar Group Classification with Identifying Key and Diagrams.

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