Yam-leaved clematis
Clematis ternifloraRanunculaceae
Whole Plant
Flower
Flower
Fruit
Whole PlantFlowerFlowerFruit
Fruit
Leaf
Leaf
Leaf
FruitLeafLeafLeaf
Leaf
Habitat
Habitat
LeafHabitatHabitat
Photos (c) Cheryl Comeau Beaton unless otherwise noted

Synonyms:

  • Sweet autumn virginsbower, leatherleaf clematis
  • Clematis dioscoreifolia, C. maximowicziana, C. paniculata

The Plant:

  • A scrambling vine with thin stems

The Leaves:

  • opposite
  • ovate, frequently lobed
  • white coloration along midvein

The Flowers:

  • White, fragrant, four-petaled flowers on multi-stemmed clusters from leaf axils.

The Fruits:

  • typically 1-4 fruits per stalk, a red, flat achene topped with a showy, feathery "flag"

Dispersal:

  • wind-dispersed seeds, stems

Key ID Features:

  • white, four-petaled, fragrant flowers
  • climbing habit

Similar Species:

  • Leaves resemble other Clematis species.

Notes:

  • Widespread on Nantucket, both in gardens and in the wild

Growth Form: Vine

Origin: Asia

Level of Invasiveness for Nantucket: Likely Invasive

Level of Invasiveness for Massachusetts: Not evaluated

Massachusetts Cultivation Restrictions: no




Credits: The Electronic Field Guide to the Invasive Plants of Nantucket (c) 2005-2006 Maria Mitchell Association, EFG Project, UMass Boston