Clematis viticaulis

Clematis viticaulis is a species of flowering plant in the buttercup family known by the common names Millboro leatherflower and grape clematis.

Clematis viticaulis

Imperiled  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Ranunculales
Family: Ranunculaceae
Genus: Clematis
Species:
C. viticaulis
Binomial name
Clematis viticaulis
Steele

Distribution

It is endemic to the Appalachian Mountains in western Virginia, in the Eastern United States. It is known from Bath, Augusta, and Rockbridge Counties.[1]

This plant is limited to the shale barrens habitat and woodlands along its edges.[1][2] There are 18 to 20 occurrences, with a total global population of 1500 to 2500 individuals. Despite its rarity and endangered species status, the plant's population is generally stable, with only minor threats, such as herbivory and road maintenance. Recruitment from seed is uncommon but the plants live a long time once established.[1]

Description

Clematis viticaulis is a woody vine, producing erect, hairy stems up to 0.5 metres (1.6 ft) long. The thin, leathery oval leaves are up to 8 centimeters long by 4.5 wide and are oppositely arranged on the stems.

The inflorescence is a single urn-shaped flower. There are no petals, just hairy purple or blue-[1] or green-tinged sepals which are lance-shaped and up to 2.5 centimeters long. The sepal tips are pointed or rounded and spread, curve, or curl backward.

The fruit is an achene with a plumelike, copper-colored extension up to 4 centimeters long.[3]

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See also
  • Flora of the Appalachian Mountains

References
  1. The Nature Conservancy: Clematis viticaulis
  2. Clematis viticaulis. Archived 2011-10-26 at the Wayback Machine Center for Plant Conservation.
  3. Clematis viticaulis. Flora of North America.
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