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Epilobium oregonense
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Oregon Willowherb
( Epilobium oregonense )
Epilobium oregonense
More Photos at CalPhotos
More Info at Jepson eFlora
Calflora
Click on blue squares to see occurrence records.
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About Oregon Willowherb (Epilobium oregonense)
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Epilobium oregonense
is a species of flowering plant in the evening primrose family known by the common name Oregon willowherb. It is native to western North America from British Columbia to Arizona, where it generally grows in moist places in several types of habitat. It is a perennial herb growing spindly erect stems approaching 40 centimeters high or sometimes forming mats spreading via stolons. The small leaves are rounded near the base of the plant and linear in shape farther up the stem. The inflorescence bears flowers with four white to pink petals each a few millimeters long. The fruit is an elongated capsule up to 5 centimeters in length which is borne on a long pedicel which may be longer than the capsule itself.
Plant Description
Plant Type
Perennial herb
Size
0.26 - 1.3 ft tall
Flower Color
Pink, White
Wildlife Supported
Butterflies & moths hosted ( 10
likely
* )
SHOW ALL
*
White-lined Sphinx
Hyles lineata
Hyles lineata
*
Black-Banded Carpet
Antepirrhoe semiatrata
Antepirrhoe semiatrata
*
Yellow-Banded Day Sphinx
Proserpinus flavofasciata
Proserpinus flavofasciata
*
Clark's Day Sphinx Moth
Proserpinus clarkiae
Proserpinus clarkiae
*
Double-Banded Carpet
Spargania magnoliata
Spargania magnoliata
*
Langston's Forester
Alypia langtoni
Alypia langtoni
*
Tacoma Cutworm
Trichordestra tacoma
Trichordestra tacoma
Landscaping Information
Common uses
Hummingbird Gardens
Natural Setting
Climate
Annual Precipitation: 7.0" - 128.0", Summer Precipitation: 0.51" - 4.29", Coldest Month: 19.6" - 56.0", Hottest Month: 40.9" - 83.9", Humidity: 0.70" - 33.66", Elevation: 1767" - 11550"
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Oregon Willowherb
Epilobium oregonense
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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