Green Rabbitbrush, Lanceleaf Rabbitbrush, Lanceleaf Green Rabbitbrush, Sticky-leaf Rabbitbrush, Yellow Rabbitbrush
Chrysothamnus viscidiflorus ssp. lanceolatus
Synonyms: Chrysothamnus viscidiflorus var. lanceolatus, Ericameria viscidiflora ssp. lanceolata
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The photo at left shows the inflorescence and numerous stem leaves of green rabbit-brush as seen on slopes about one mile east of Celilo, OR.........October 7, 2006. The image at center shows a close-up of the flowerhead of green rabbitbrush as seen one mile east of Celilo, OR. Note the numerous glands within the inflorescence. The image at right shows a close-up of the ventral surface of a leaf of green rabbitbrush.........October 7, 2006. Note the numerous glands on the leaf blade.
Characteristics:
Green rabbit-brush is a freely branched shrub to 12 dm tall.
The stems are erect, with brittle twigs. The stems are glabrous with stiff spreading
hairs. The leaves are linear to linear-oblong, green, and lack hairs. The leaves
are curled or crisp-margined and range from 1-6 cm long and 0.5-10 mm wide.
The yellow flower heads form cymose clusters at the branch tips.
The flower heads are discoid and narrow. The involucre is 5-8 mm high, and the
disk corollas range from 4.5-7 mm long. Green rabbit-brush flowers from late
summer into fall.
Habitat:
Often found with sagebrush and juniper in dry open places in
the valleys, plains, and foothills. It may occasionally be found to moderate
elevations in the mountains.
Range:
From extreme southern British Columbia south along the east
edge of the Cascades to southern California, east to Idaho and south to northern
New Mexico and Arizona.
In the Columbia River Gorge, Chrysothamnus viscidiflorus
var. lanceolatus may be found between the elevations of 200'-500'
from just east of The Dalles and in many locations to the east in the gorge.
This image shows a very late blooming green rabbitbrush as seen in an area burned by the 2024 Horsethief Lake Fire, about one-hundred yards uphill from the park headquarters at Horsethief Lake, Columbia Hills Historical State Park......December 21, 2024.
Green rabbitbrush as seen at Horsethief Butte in the eastern Columbia River Gorge........May 10, 2009.
Green rabbit-brush in bloom east of Celilo, OR in the Columbia River Gorge.........September 29, 2007.
Paul Slichter