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Whitaker Pond: North bank of east pond.

Hoyt Arboretum: Collected across the street (SW Cascade Drive) in a wet ditch from the Winter Garden, approx. 10 meters from entrance to the Beech Trail.

Mowhawk River east of Springfied, North of the confluence of the Mckenzie river and the Mowhawk by about 2 miles. Accessed via private property permission.

USA: Oregon, Multnomah County, From Colton OR, drive N on Hwy 211 to S. Hillcokburn Rd, about 10miles. From this intersection drive up Hillockburn to FS gate about 5 miles. From this gate drive 2.5 miles to first 'Y' in road, NF-4510. Collection north s.

Hoyt Arboretum: Collected from the Holly Section, right at the intersection of the lower Holly & Connector Trails, approx. 50 ft from start of trail at Visitor Center parking lot. Located just below Ilex x attenuata 'Alagold' tree.

Hoyt Arboretum: Collected from north side of Beech Trail, about 10 meters south of where the trail crosses SW Upper Cascade Drive. Hillslope of native and weedy understory, in the arboretum Magnolia section.

Hoyt Arboretum: Collected from grassy lawn area about 5 m west of the flagpole at Vietnam Veteran's Memorial. Found as a weed with lawn grasses.

Intersection of NE 33rd Drive & NE Riverside Way.

Metro: Lovejoy SidNel swale; Swale in Tualatin River Floodplain, in same location as Sidalcea nelsoniana.

NE 33rd & Riverside Way. Slough channel, riparian edge, old agricultural field.

Hoyt Arboretum: Gravel ditch along north side of SW Kingston Drive, below the arboretum's Acer collection.

Delta Park (PP&R): Collected at the end of the orchard on north end of Urban Forestry campus. Young tree with long needles (except on new growth). Intentional planting; surrounded by grass and fruit trees.

Riverview Mausoleum property/ banks of Stephens Creek, 1/8 mi up from crossing of creek with Taylor's Ferry Rd.

Willamette Park (PP&R): Collected just south of boat launch parking lot, near bathrooms. An urban park with maintained turfgrasses. This tree surrounded by oaks. Tree about 35 ft tall.

Intersection of NE 33rd Drive and Riverside Way.

Smith and Bybee lake, from 16270-16298 N Lombard St Portland, OR 97203 (trail head across from Kelly Point Park entrance) walk south on paved trail about 600M. then walk west, cross the channel (do able in summer/low water) to ponds a.

Hokkaido.

Alleghany Mts

Pittock Mansion, 3229 Northwest Pittock Dr. At W end of parking lot where Wildwood trail comes in from the S, walk W into woods about 20m.

Beaverton: Cooper Mt Natural Area, 18892 Sw Kemmer Rd. From main parking lot walk to intersection of Cooper Mt Loop and Little Prarie Loop. From this intersection walk S looping W on Cooper Mr Loop about 244m. Plant on N side of trail.

5479 N Marine Dr, entrance to Smith and Bybee parking lot. Drive about 467m to bathroom and lot. Collection in lot island S of bathrooms.

Intersection of Kelly Point Park rd, N Lombard and N Marine drive. park in Kelly Pt. Pk. lot. walk down multuser path about 315m. Then walk West about 61m to Columbia slough.

Sauvie Island, west of Portland on Hwy 30. At Sauvie Island bridge drive onto island and go NW on Sauvie Island Rd about 2km to 13901 NW Howell Park Rd. Plant found near center of Howell lake. NE of Bybee Howell house about 44m.

River Bend County Park 45793 Santiam Hwy. Park in day use area. Walk North past public restrooms to river. Collection along river.

Hoyt Arboretum. About 9m south on SW Fairview Blvd. on north side of road. 0.5 to 1.0m offroad.

Washington Park (Portland): Stearns Way, near top on West side of path. Bottom of Washington Park Ridge.

From Colton OR on hwy 211 drive about 10 miles to S. Hillcokburn rd. From intersection drive to USFS gate, about 5 m. From gate drive on NF-45 about 3.5-3.6 miles. collection on W side of Rd.

Hoyt Arboretum: Collected off of the Redwood Trail, about 10 m from its intersection from Bray Lane (across the street from the Bamboo Forest).

Hoyt Arboretum: Located in a planted bed in the Winter Garden. Likely intentionally planted. Located with Helleborus sp. and Rhododendron sp.

Hoyt Arboretum: Located trailside on upslope side of the Beech Trail, right where it crosses the culvert, behind bench.

Hoyt Arboretum: On the uphill side of the Overlook Trail, approximately 50 meters from the parking lot entrance.

Hoyt Arboretum: Collected at the Overlook Trail viewpoint, about 2 meters east of the viewpoint sign.

Sichuan Province China.

Smith & Bybee.

Hoyt Arboretum: Collected just off the eastern portion of the Magnolia Trail, approximately 20 meters east (downhill) of the intersection of the trail with SW Upper Cascade Drive, , on a shaded SE-facing hillslope.

William L. Finley National Wildlife Refuge, S. of Corvallis about 8 Km. At intersection of 99w and Lakeside Dr. Collect west side of 99w in ditch.

Rancho Santa Ana Botanic Garden, 1500 N. College Ave. Claremont CA. 91711. In garden behind main building.

John Day Fossil Beds, Sheep Rock Unit, between the towns of Dayville and Kimberly. The Thomas Condon Paleontology Center is on Highway 19, two miles north of the junction with Highway 26. West.

Hoyt Arboretum: Collected just off the eastern portion of the Magnolia Trail, approximately 20 meters east (downhill) of the intersection of the trail with SW Upper Cascade Drive, on a shaded SE-facing hillslope.

Tom McCall Preserve (The Nature Conservancy): Collected along Lower Loop Trail, approx. 75m NW of parking area, across from turn-off to Rowena Crest Viewpoint, off-of Historic Columbia River Highway.

Irving Park: Trees by basketball court (south side), close to NE 7th in park.

Hoyt Arboretum: Trailside weed, collected in the arboretum Holly section, about 10 ft uphill from stairs leading up from the parking lot on the lower Holly Trail.

Ankeny Wildlife Refuge. South of Salem 17km. Exit W at Ankeny Hill Rd, at intersection of Buena Vista Rd S park. Collection made at SW corner about 50m into refuge.

Thurston County Oregon.

Selma. Siskiyou Field Institute Propery N. of Eight Dollar Mt. On "upper property". From 199 and County rd 5070 (Selma) go W almost 2 miles to SFI Private road, on N. Side. (200 meters W of SFI drive). up pirvate rd almost 2 miles near road end.

Forest Park: Growing on a natural bench/flat area between the Wildwood Trail and Burnside Road, where there has been disturbance from land subsidence. In shade; singular plant about 6 ft tall.

Hoyt Arboretum: Collected from wet seep area in the center of the Bamboo Garden.

Near Baskett Slough NWR: near intersection of Hwy 22 and Goose Creek Rd.

Eigenji-cho, Higashiomi-shi.

Portland Heritage Tree: Residential tree planted in right-of-way at 408 N. Rosa Parks Way. Heritage Tree #317. Large tree about 93 ft tall.