[Desert Parsleys East of the Cascade Mountains of Oregon and Washington]
Biscuit Root, Bigseed Biscuitroot, Bigseed Lomatium, Gray-leaf Desert Parsley,
Large-fruit Desert Parsley, Large-fruited Lomatium
Synonyms: Cogswellia macrocarpa, Ferula macrocarpa, Lomatium flavum, Lomatium macrocarpum var. artemisiarum, Lomatium macrocarpum var. ellipticum, Peucedanum macrocarpum
The photo above shows a white-flowered form
of the biscuit root.
photo at right shows a close-up of the fruit of biscuit root as seen near MP 14
along Yellowjacket Road in Umatilla County, Oregon..........May 26, 2002. The
fruits are thick and relatively large compared to other desert parsleys.
Also known as bigseed lomatium, biscuit root is an attractive
perennial wildflower with several to many prostrate, arched, or erect scapes
arising 10-25 cm from a cluster of lacy leaves atop a thick tuberous base. The
stems are largely leafless. The leaves are somewhat ternate-pinnately or pinnately
dissected into small segments up to 9 mm long and to 2 mm wide. The grayish
herbage of the leaves and stems is sparsely to rather densely covered with either
short, fine hairs or long, soft and unmatted shaggy hairs.
The inflorescence consists of a complex umbel , the smaller
umbellets supported on unequal to subequal rays, the longer ranging from 2-6
cm long. The bractlets below the umbellets are narrow, well-developed and conspicuous,
often equaling or longer than the flowers. The pedicels are 1-11 mm long at
maturity. The flowers are white, purplish-white or yellow. The glabrous fruits
are fairly narrow, oblong or linear-oblong or even elliptic in shape, measuring
from 10-20 mm long, and usually 2-5 times as long as wide.
Biscuit root may be found on dry, open rocky plains and hills
from the lowlands to well up in the foothills.
Biscuit root is a widespread species of desert parsley, and
is found from southern British Columbia south through Washington and Oregon
to the east of the Cascade summits to central California, and east to Manitoba,
North Dakota, western Wyoming, and north-central Utah.
The photo above shows the distinctive bracts
below the umbelet of biscuit root as seen atop the Horse Heaven Hills near Benton City, WA.........April 28, 2006. Note the long, lanceolate bracts radiating from the base of the involucel.
The photo at left shows biscuit root as seen on the Snow Mt. Ranch along the trail to Cowiche Mt. to the west of Yakima, WA.........March 23, 2008. The photo at right shows bigseed desert parsley as seen atop Lookout Mountain, Ochoco National Forest.........May 29, 2016.
Maturing fruits of large-fruit desert parsley as seen atop Spanish Peak, Ochoco National Forest..........September 25, 2016.
Close-ups of a light-purplish flowered specimen of bigseed biscuitroot as seen about one mile east of the high point between Bickleton and Mabton on the Mabton Road, Yakima County.........April 18, 2010.
blooming at left on scablands between Long Prairie and FS Road 4230-050, Ochoco National Forest........April 30, 2016. The large involucel bracts are easily seen in these images. The photo at right shows bigseed desert parsley as observed on scablands along Forest Road 4240 about a mile south of Lame Dog Creek, Ochoco National Forest.......April 26, 2018.
The photo above shows the full umbel of biscuit
root as seen at the northwestern edge to the Wenaha-Toucannon Wilderness in
southeastern Washington........June 27, 1998. Note the long, lanceolate bracts radiating from the base of each involucel.
The photo at left shows bigseed biscuitroot blooming on basalt outcrops along the Sprague Highway about one mile west of Miller Ranch Road, eastern Washington.........May 28, 2014. The photo at right shows bigseed biscuitroot as seen on slopes high to the west of the Cottonwood Canyon State Park campground..........February 22, 2015.
A leaf of bigseed biscuitroot as seen (left) on sand dunes atop the White Bluffs (north), Hanford Reach National Monument..........May 26, 2014. The photo at right shows a closer view of a leaf of bigseed biscuitroot as seen on rocky slopes above and to the north of the day use area at Cottonwood Canyon State Park, Sherman County, Oregon..........March 18, 2016.
Bigseed biscuitroot as seen on scablands along Forest Road #2901 adjacent to the junction with Oregon Highway 31, BLM lands near Picture Rock Pass........April 30, 2017.
The photo above shows biscuit root as seen
with Hood's phlox atop the Columbia Hills, eastern Columbia River Gorge........March 27, 2004.