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Nevin's Woolly Sunflower
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Constancea nevinii
  

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About Nevin's Woolly Sunflower (Constancea nevinii) Constancea is a monotypic genus of flowering plants in the aster family containing the single species Constancea nevinii (formerly Eriophyllum nevinii), which is known by the common name Nevin's woolly sunflower. It is endemic to three of the Channel Islands of California, where it grows in coastal scrub habitat. This is a small shrub or subshrub generally growing up to one or 1.5 meters tall, and taller when in erect form, with a branching, woolly stem. The whitish, woolly oval leaves may be up to 20 centimeters long and are divided into many narrow lobes with edges curled under. The flower cluster is a cluster of 10 to 50 or more small flower heads, each on a short peduncle. The flower head has a center of hairy, hairy, star-shaped yellow disc florets and a fringe of four to nine yellow ray florets each about 2 millimeters long. The fruit is an achene a few millimeters long with a small pappus at the tip.

Like many Channel Islands endemics, this plant was threatened with extinction by the herbivory of the feral goats living on the islands; the goats have since been removed and the plant is recovering. However, it is still included on CNPS list 1B.3 as a rare plant. The yellow flowers contrast nicely with the silvery-gray foliage. This plant would be good for coastal gardens in southern California where temperatures are moderate and it would receive some fog drip.
Plant Description
Plant Type
Shrub

Max. Height
3.3 ft (1 m)

Max. Width
3 ft (0.9 m)

Form
Mounding

Fragrance
None

Growth Rate
Moderate

Dormancy
Evergreen

Flower Color
Yellow

Flowering Season
Spring, Summer
Spring
Summer
Fall
Winter


Native Status
Natural Setting
Site Type
Coastal bluffs of the Channel Islands in coastal sage scrub

Sun
Sun

Elevation ?
-202' - 1518'

Annual Precip. ?
7.8" - 19.4"

Summer Precip. ?
0.20" - 0.29"

Coldest Month ?
50.7° F - 57.6° F

Hottest Month ?
64.4° F - 73.2° F

Humidity ?
1.41 vpd - 16.65 vpd

Soil Description
Sandy with pebbles or cobbles

Drainage
Fast, Medium

Cold Tolerance(° F)
Tolerates cold to 30° F

Companion Plants
Use with other Channel Island plants such as Santa Cruz Island Ironwood, Island Live Oak, Island Bristleweed, Channel Island Tree Poppy, and Giant Coreopsis. Other coastal sage scrub companions include California Encelia, California Sagebrush, and various Dudleya and cactus species.

Landscaping Information
Ease of Care
Very Easy

Water Requirement ?
Very Low
Extremely Low
Very Low
Low
Moderate - High


Popularity
Seldom Used

Max. Summer Water ?
1x/month
No Summer Water
1x/month
2x/month
3x/month
1/week
Keep moist


Mulch
Organic with Rocks

Propagation ?
For propagating by seed: No treatment; leaching in running water for 24 hrs. before sowing may improve germination.

Common uses
Deer Resistant, Butterfly Gardens, Butterfly Gardens, Bee Gardens

Nursery Availability
Commonly Available

Other Names
Botanical Names
Eriophyllum nevinii

Common Names
Silverlace


Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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