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Oregon Goldthread Back to Plant Page
Coptis laciniata

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About Oregon Goldthread (Coptis laciniata) Coptis laciniata is a species of flowering plant in the buttercup family known by the common name Oregon goldthread. It is native to Washington, Oregon, and far northern California on the west coast of the United States, where it grows in wet habitat in the understory of mountain and coastal coniferous forests. It is a small perennial herb creeping on a yellow stolon through other vegetation and leaf litter. There are a few leaves on its short stem which are divided into leaflets subdivided into several toothed lobes. The stemlike flower cluster arises up to 19 centimeters tall from the stem at ground level. Each flower is an array of thin, threadlike petals. Six to 12 fruits arise on short stalks, arranged in a ring. The fruits are shiny, hairless follicles, each roughly a centimeter long.
Plant Description
Plant Type
Perennial herb

Max. Height
7.4 - 9.6 in (18.8 - 24.4 cm)

Native Status
Natural Setting
Site Type
Wet places, seeps, streambanks,

Part Shade

Elevation ?
247' - 4722'

Annual Precip. ?
44.6" - 124.3"

Summer Precip. ?
0.73" - 3.74"

Coldest Month ?
38.2° F - 44.9° F

Hottest Month ?
60.9° F - 70.3° F

Humidity ?
0.01 vpd - 19.72 vpd

Sunset Zones ?
4*, 5*, 6*, 7, 15, 16, 17

Landscaping Information
Nursery Availability
Never or Almost Never Available

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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