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Hoyt Arboretum: Collected off-of the Magnolia Trail, on a hillslope with Umbellularia californica, approximately 30 m north of where the trail crosses SW Upper Cascade Drive.

Portland Oregon. Riverview Park, Portland Parks and Recreation.

Beaverton: Cooper Mt. Natural Area, 18892 SW Kemmer RD. From main parking lot walk to N intersection of Overlook trail and Cooper Mt loop trail. from this intersection walk S about 185m. then walk directly S off trail about 40m.

SW of Hashimoto City

Hoyt Arboretum: Trailside in a Douglas fir forested understory. 5 meters northeast of Wildwood Trail and a connector trail that leads to Vietnam Veteran's Memorial. About 75 meters north of VVM.

Hoyt Arboretum: Weedy trailside, east side of the Maple Trail between the stairs (at the Berberis shelf) and where the trail crosses Knights Blvd.

Portland. From intersection of N Kelly Point Park Rd, N. Lombard and N Marine drive, park in lot. Walk about 1.8km S on multiuser path. Grass everywhere.

Powell Butte Nature Park: Just upstream from Deardorff Creek or Johnson Creek.

Ross Island, the actual island in the Willamette, north end west side of island on the west edge of the island, up on the main bench of the island beyond the top of bank not on the banks or shore line.

Hoyt Arboretum: Located in central area in main parking lot at the Hoyt Visitor Center, next to Choisya 'Aztec Pearl' TH24-19-02.

Portland,Leach Botanical Garden. 6704 SE Foster Rd. Plant collected from beds near front door of Manor House.

Metro Smith & Bybee Lakes.

Painted Hills unit of John Day Fossil Beds National Monument. From Hwy 26 take Burnt Ranch Rd to Painted Hills. grass found near bathroom area at entrance.

Metro: Smith & Bybee Lakes. Collected near shore of Smith Lake when water is low.

West Slope Mt. Hood.

Sandy River Delta Park. North of Jordan Rd parking lot. About 60m north of parking lot on main trail.

Hoyt Arboretum: Collected from the north end of the small (intentionally planted) wetland area in the center of Arboretum Visitor Center parking lot. Found with Juncus effusus, Scirpus microcarpus, Stachys cooleyae.

Hoyt Arboretum: Edge of planted garden bed in the Winter Garden.

Elk Rock. Collected from cliff face.

South of Rickreall by about .5 miles on West side of hwy99 in ditch.

Sellwood Park (PP&R): Near SE Grand park entrace (by SE Nehalem St.). From a planting bed in full sun, surrounded by Douglas fir trees. The only tree of this type in this bed and in this park.

Smith and Bybee Lake Natural Area, North end of lake at big parking lot, Collection made in sandy soil N. side of parking lot by train bed.

Collected from a roadside ditch, on the north side of NW Dick Road, approximately 10 m west of its intersection with West Union Road.

Portland, collected from alley between 29th & 30th, at 5115 NE 30th Avenue.

Portland. West bank of the Willamette River down from Willamette Park. Downstream of Stevens Creek confluence.

Portland: Travel east on I-84 through Troutdale, take exit #18. Follow the signs to Sandy River Delta located on north side of the interstate; just east of the Sandy River. Walk N on Ranch Dike trail to Old Channel trail go rt, East. about 80m.

Hoyt Arboretum: Collected from weedy roadside SE corner of the intersection of SW Fairview Blvd and SW Knights Blvd.

Portland. East bank of the Willamette River in Swan Island industrial area. Vacant lot near boat ramp.

City of Portland: Hamilton Park.

Willamette Moorage Park: Steven Creek Confluence into the Willamette River. Located east of SW Macadam Avenue.

Hoyt Arboretum: Collected approximately 75 m from the Redwood Deck on the Wildwood Trail, just south of its intersection with the Spruce Trail.

Witham Hill Nature Park. 4578 NW University Pl Corvallis, OR 97330. from Parking lot walk North an slighlty west about 100M through the wooded area to an open wet area.

Hoyt Arboretum: From NW corner of the sharp bend on the Redwood Trail, located between its intersection with the Fir Trail and where it crosses SW Fischer Lane.

East Bank Esplanade, from E end of Steel Bridge walk S 250m, then walk W 25m to river edge.

Hoyt Arboretum: Collected from the east end of wet seep in the middle planted area of the Visitor Center parking lot.

Metro: Gales Forest Grove Natural Area.

Collected from an industrial park area, in a weedy waste site behind the parking lot at FlightSchool Gymnastics center.

Grant Park (PP&R): Located in developed garden beds along NE 33rd Avenue.

Powell Butte: Edge of the Elderberry Trail. Near intersection of 152nd and Foster Road.

Hoyt Arboretum: Intersection of Bray Lane & Fairview Blvd., west side of Bray Lane, edge of gravel road.

Hoyt Arboretum: Collected off of Wildwood Trail, at its intersection with a Connector Trail (heading towards Fairview Blvd), between Knights Blvd and Veteran's Memorial.

Hoyt Arboretum: Found near the intersection of Fairview Blvd and Knights Blvd. Collected just up the stairs off the Holly Trail, approximately 20 meters uphill from the SW end of the parking lot.

From intersection of N Kelly Pt Park Rd, N Lombard, N Marine dr. park and walk S on multiuser path about 530m. Walk W about 57m to slough.

Found below Leif Erickson, near milepost 11.

Terwilliger Trail (PP&R): Collected a few meters NW of walkway, located between residentail area (239 SW Whitaker St.) and the Terwilliger Trail.

Marquam: Private property. Collected from backyard of 2020 SW Edgewood Rd, Portland. Abuts Marquam Nature Park. Population is across property boundaries.

Elk Rock Island: Bushman Plot 108, near Willamette River in Milwaukee, OR.

North end of Smith and Bybee Wetland Natural Area, from Interlakes Trail head walk East about a kilometer on the road next to the lake, loads of invasives on the train bed.

Hoyt Arboretum: Collected from the west side of Fairview Blvd, about 40 m north of arboretum visitor center.

Forest Park: Tolinda Trailhead. At Germantown Rd & Tolinda trailhead.