Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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Robert Louis Stevenson State Park (Hwy 29 N. from Calistoga) along creek immediately S. of trail, near the old mine entrance. Within 10 ft of creek bed.
Napa County, NW side of Butts Canyon Road/ Shell Valley Road, Napa 00.25 marker, SE side of Butts Creek, 10-15' from water, submerged to 1.5' at flood levels.
Napa County, Butts Canyon Rd./ Shell Valley Rd. along Butts Creek, Napa 19.25 marker. Off Pope Valley Rd., NE side of road, S bank, 50' SE of ranch driveway at water's edge, plant submerged to 1.5' at flood levels.
Napa County, NE side of Butts Canyon Rd. along NE side of Butts Creek, at Napa 19.75 marker. In 5' of low water, crowns 1-2' above low water, submerged 1.5-3' at flood levels.
Napa County, NE side of Butts Canyon Rd. along SW and NE side of Butts Creek, 250 ft. east of Napa, 20.14 marker. Bulk of population is 330 ft. west of Napa 20.14 marker, continuous to Lake Co. Plants within 20' of water.
Napa County, Butts Canyon Rd/ Pope Valley Rd. near Butts Creek. NE side of Pope Valley Rd. from Shell Valley Rd S. along Butts Canyon Rd (Pope Valley Rd.) from 0.1 miles to 0.8 miles S., both sides of Butts Creek, but upstream SW side.
Robert Louis Stevenson State Park (Hwy 29 N. from Calistoga) along creek from trailhead to point where trail diverges west from creek bed. In or within 10 ft. of creek bed on SE facing slope.
Robert Louis Stevenson State Park (Hwy 29 N. from Calistoga) along creek immediately S. of trail, near the old mine entrance. Within 10 ft of creek bed.
McLaughlin UC Reserve. S of the reserve near Hunting Creek campground where Hunting Creek Rd. crosses the Creek. Along Hunting Creek 100 yards upstream of junction with Sensitive Plant Canyon.
California, Napa County, on Bureau of Land Management land S of McLaughlin Reserve. West of Devil Head Road, S side of Hunting Creek, S of Hunting Creek campground, at pool at confluence of Sensitive Plant Canyon and Hunting Creek.
On highway 128, 3.9 miles Northwest of Moskowite Corners, approximately 200 yds West of roadside. Found on canyon slopes, in a moist area near creek, common but not numerous. A large bush, 3-5 ft. high. Flowers, creamy yellow and sticky.
Butts Canyon Rd. along both sides of Butts Creek. Lake County line to 500' southeast of county line, predominately on southwest bank, a few on northeast bank.
Butts Canyon Rd./ Shell Valley Rd. along Butts Creek, Napa 19.25 marker. Off Pope Valley Rd., Northeast side of road, south bank, 50' southeast of ranch driveway at water's edge, plant submerged to 1.5' at flood levels.
Robert Louis Stevenson State Park (Hwy 29 north from Calistoga) along creek immediately south of trail, near the old mine entrance. Within 10 ft of creek bed.