Clematis Patens Group

Origin: Cultivars are mainly derived from Clematis patens or hybrids that have a Patens Group cultivar as at least one of the parents.
Habit: Climbing, deciduous.
Leaf: Simple or ternate or pinnate, herbaceous, petioled. Leaflets usually simple, margin entire, rarely lobed to cleft.
Inflorescence: A solitary flower or a few flowered dichasial cyme. On young shoots the terminal flower first.
Bracts: Present, leaflike and usually simple.
Flower: Bisexual, upright, spreading, 4-25 cm across, bud upright.
Tepals: 4-8, white, cream-yellowish, red-purple, purple, blue, violet-blue or purple-violet, sometimes striped with a darker or paler colour, elliptic or rarely oblanceolate-obovate.
Stamens: Usually fertile but in several cultivars changed into tepal-like staminodes, filaments glabrous.
Pistil: In some cultivars changed into tepal-like pistillodes together with the tepal-like staminodes and then the flower has no fertile pistil, in bisexual flowers usually longer than the stamens and plumose.
Flowering time: Spring and summer, some cultivars flowers mainly in spring.
Seed tail: Plumose, seedhead not persistant.
Zone: 5-11 (EU & USDA zones).
Light or hard pruning.
Planting depth: About 5-10 cm deeper as in the pot, so deeper planting.
Roots: Fleshy.
Leaves in seedlings: Opposite.



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

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