United States, Oregon, Columbia: St. Helens, along U.S. Hwy. 30 between Gable and Sykes Roads. Elev. Elev. 28m
45.8499°, -122.83082°.

Disturbed area along sidewalk. HerbariumSpecimenDuplicate: Conyza canadensis Flowers white. https://oregonflora.org/collections/individual/index.php?occid=6321158. Origin: wild collection.

U.S.A., Washington, Douglas County: Big Bend Wildlife Area. Black Lake. Elev. 590 m.
48.11465° N, 119.09327° W
Datum: WGS 84. Coordinate uncertainty: 500 meters. Coordinate Source: GPS.

Shallow, alkaline lake with large evaporative drawdown area. Distichlis spicata, Schoenoplectus americanus, and Symphyotrichum ericoides common. Area actively grazed; no submerged aquatic vegetation. Plants grazed; taprooted annual; common in adjacent upland. Reproductive state: Flowers and Fruits. Origin: Native.

U.S.A., Washington, Lincoln County: Coffeepot Lake. From boat launch along shoreline to eastern end of lake. Elev. 538 m.
47.50136° N, 118.55337° W
Datum: WGS 84. Coordinate uncertainty: 200 meters. Georeferenced by Dan Post. Coordinate Source: GPS.

Basalt rimrock lake with drawdown zone; Schoenoplectus acutus and Euthamia occidentalis common in adjacent edge; Persicaria spp. common in mucky shoreline. Taprooted annual; rayless; scattered in cobbly shoreline. Reproductive state: Fruits. Origin: Native.

U.S.A., Oregon, Benton County: Coast Range; along state hwy 34 ca. 2.3 miles west of the Marys Peak Road junction, east of Alsea. Elev. 184 m.
44.44039° N, 123.52941° W

Weedy clearcut with Rubus, Alnus, Daucus, Holcus, Leucanthemum, Senecio, Madia. Rays flowers white.

U.S.A., Montana, Fergus County: Charles M. Russel NWR, along the south shore of the Missouri River at the confluence with Two Calf Creek. Elev. 2300 ft.
47.6452° N, 108.7728° W
Georeferenced by Giovanna Bishop. Coordinate Source: Specimen Label.

Wet mud along the south shore of the river. With Potentilla anserina and Ranunculus. One browsed plant. Determined by D. Keil.

United States, Washington, Grays Harbor: Pacific Northwest Coast Ecoregion: woods west of Overlake Lane, McCleary, 0.75 miles south of WA Hwy 8 and 18 miles west of Olympia. T18N R5W S14 NW4 SW4 SW4. Elev. 340 ft
47.044579°, -123.28515°.

Gravel logging road in second growth Douglas-fir forest. Soil dry clay below gravel. HerbariumSpecimenDuplicate: Conyza canadensis Synonym = Erigeron canadensis. https://intermountainbiota.org/portal/collections/individual/index.php?occid=32504153. Reproductive state: Flowering & Fruiting.

U.S.A., Washington, Skamania County: Along Szydlo Road vicinity of Wind River Work Center. Elev. 1024 ft.
45° 49.929\' N, 121° 56.407\' W

Weedy roadside at wet area. Reproductive state: Flowers. Origin: Native.

U.S.A., Montana, Lewis and Clark County: Off of Virginia Dale St. in Helena Elev. 4380 ft.
46.5746° N, 112.0113° W
Georeferenced by Trey Good. Coordinate Source: Specimen Label.

Growing in cracks and around edges of stone walkways. Flowering.

U.S.A., Idaho, Boundary County: Priest Lake State Forest, Selkirk Mountains, Dodge Creek Road, beyond first gated road about .75 mile. Site ID: SK-558. Elev. 855 m.
48.546277° N, 116.478626° W
Datum: WGS 84. Coordinate uncertainty: 5 meters. Coordinate Source: GPS.

Open gravelly old road bed inundated with weeds amidst logged mixed conifer montane forest. Reproductive state: Flowers. Origin: Native.

U.S.A., Idaho, Boundary County: Kaniksu National Forest, Selkirk Mountains, Parker Trail. Site ID: SK-72. Elev. 820 m.
48.916547° N, 116.502183° W
Datum: WGS 84. Coordinate uncertainty: 10 meters. Coordinate Source: GPS.

Gentle draw with dry stream in burned conifer forest regenerating with Chamerion and Acer glabrum amongst robust weeds. Silica taken. Common. Reproductive state: Fruits. Origin: Native.

U.S.A., Idaho, Boundary County: Kaniksu National Forest, Selkirk Mountains, Parker Trail No.221, about .3 air miles to Trailhead. Site ID: SK-249. Elev. 762 m.
48.915226° N, 116.498872° W
Datum: WGS 84. Coordinate uncertainty: 4 meters. Coordinate Source: GPS.

Open grassy disturbed southeast facing slope with Holodiscus discolor, Hypericum perforatum and Rumex acetosella. Reproductive state: Fruits. Origin: Native.

U.S.A., Oregon, Sherman County: LePage Campground on I-84.
45.728362° N, 120.65148° W
Datum: WGS 84. Coordinate Source: GPS.

Common on dry north-facing slope, full sun, with Bromus tectorum. Taprooted. Reproductive state: Flowers and Fruits. Origin: Introduced.

United States, Washington, Douglas: Columbia Plateau: Two Steppe Natural Area Preserve, 1 mile south of WA Hwy 2, ca 1.3 miles E of rim of Moses Coulee, ca 19 air miles northwest of Ephrata. T24N R25E S12 SW4 SW4 NW4. Elev. 2280-2300 ft
47.5925°, -119.6401°.

Disturbed clay soil at edge of two track on gently west-dipping slope in weedy Artemisia tridentata-Elymus spicatus community. Dominant weeds include Sisymbrium altissimum, Bromus tectorum, Bromus squarrosus, and Agropyron cristatum. HerbariumSpecimenDuplicate: Conyza canadensis Annual. Uncommon. https://intermountainbiota.org/portal/collections/individual/index.php?occid=32159823.

U.S.A., Washington, Columbia County: Along Highland Road near the intersection with Patit Road. Elev. 3075 ft.
46.34949° N, 117.71995° W
Coordinate Source: Specimen Label.

Reproductive state: Flowers and Fruits. Origin: Native.

U.S.A., Nebraska, Cherry County: McKelvie National Forest. USFS Road 603. 1.6 km S of Niobrara River and 3.2 km E of State Spur Road 16F.
42.78138° N, 101.08373° W; T32N R32W SW1/4 NW1/4 Sec. 04.
Datum: NAD 83. Coordinate uncertainty: 3 meters. Coordinate Source: Specimen Label.

Sandhills prairie on south side of Niobrara River. Reproductive state: Fertile. Origin: Native.

U.S.A., Oregon, Morrow County: Government bunkhouse above shoreline of Lake Umatilla, 2.8 air kilometers east-northeast of east end of Big Blalock Island, Umatilla National Wildlife Refuge. Elev. 85 m.
45.92033° N, 119.574856° W
Datum: WGS 84. Coordinate Source: Specimen Label.

Common, dry sunny ground, weedy yard, over basalt; with Bromus tectorum, Bassia scoparia, Lactuca serriola. Robust annuals. Reproductive state: Fruits. Origin: Native.

U.S.A., Oregon, Morrow County: Umatilla National Wildlife Refuge.
45.92033° N, 119.574856° W
Datum: WGS 84. Georeferenced by Crystal Shin. Coordinate Source: GPS.

Weedy yard of bunkhouse, with Bromus tectorum, Bassia scoparia, Lactuca serriola.

U.S.A., Oregon, Wasco County: Along Upper Deschutes River Access Road, at Wapinitia Recreation Site.
45.144251°, -121.12545°. Datum: WGS 84. Coordinate uncertainty: 500 meters. Georeferenced by Dan Post. Coordinate Source: Digital Map.

Weedy margin of parking area. Reproductive state: Flowers. Origin: Native.

U.S.A., Washington, Jefferson County: Port Townsend along edge of road at cul de sac at terminas of 111 Vista Boulevard. Elev. 141 ft.
48° 5\' 53.5" N, 122° 47\' 36.2" W
Coordinate Source: Specimen Label.

With Hypochaeris radicata, Agrostis sp., Taraxacum officinale. Origin: Native.

U.S.A., Washington, King County: Southwest side of Shorecrest High School; south Shoreline. Site ID: BSL-1685. Elev. 120 m.
47.740315° N, 122.306595° W
Datum: WGS 84. Coordinate uncertainty: 4 meters. Georeferenced by Ben Legler. Coordinate Source: GPS.

Fenceline on edge of baseball field adjacent to gravel access road; afternoon shade; dry soil; with Conyza canadensis, Lactuca serriola, Lepidium didymum, Sonchus, grasses. Involucres urn-shaped, phyllaries softy pubescent; flowers cream-colored; erect, taprooted annual 1.2 meters tall, stem unbranched below, branched above, the stiffly ascending branches overtopping the central axis; branch tips wilting from recent herbicide application; several plants scattered along fenceline. Reproductive state: Flowers & Fruits.

Canada, British Columbia: Stewart Cassiar Highway, km 30.3 Moonlit Creek rest area. Elev. 459 m
55.32368°, -128.08957°

Disturbed gravel with Populus balsamifera, Trifolium hybridum, Leucanthemum vulgare, Taraxacum officinale, and Achillea millefolium. Locally common. Flowering and in fruit. 6 duplicates.

Canada, British Columbia: North Okanagan, 5.8 km due north of Okanagan Lake, 350 m east of Highway 97. Elev. 467 m
50.401389°, -119.3125°.

Frequent along railroad tracks, with Onopordum acanthium, Euphorbia esula, Potentilla recta, Chondrilla juncea. Glabrous phyllaries.

U.S.A., Washington, King County: Southwest side of Shorecrest High School; south Shoreline. Site ID: BSL-1685. Elev. 120 m.
47.740315° N, 122.306595° W
Datum: WGS 84. Coordinate uncertainty: 4 meters. Georeferenced by Ben Legler. Coordinate Source: GPS.

Fenceline on edge of baseball field adjacent to gravel access road; afternoon shade; dry soil; with Conyza canadensis, Lactuca serriola, Lepidium didymum, Sonchus, grasses. Involucres urn-shaped, phyllaries softy pubescent; flowers cream-colored; erect, taprooted annual 1.2 meters tall, stem unbranched below, branched above, the stiffly ascending branches overtopping the central axis; branch tips wilting from recent herbicide application; several plants scattered along fenceline. Reproductive state: Flowers & Fruits.

United States, Washington, Whitman: Smoot Hill, Hudson Biological Reserve, along road.
46.830324°, -117.23633°. Datum: WGS84. Georeferenced by Fertig.

Along road. https://intermountainbiota.org/portal/collections/individual/index.php?occid=31113142. Reproductive state: Flowering & Fruiting.

United States, Montana, McCone: Circle; along State Hwy. 200S by the Travelers Inn. Elev. 737
47.423155°, -105.57987°. Georeferenced by [automated process-OregonFlora/OSU Herb]. Coordinate Source: OrlookId: 125147, StateProvince: Montana, County: McCone, LocName: Lat 47.423155 Deg; Lon -105.579873 Deg. OregonFlora 1994-2020 methodology.

Weedy area. HerbariumSpecimenDuplicate: Conyza canadensis https://oregonflora.org/collections/individual/index.php?occid=3010996. Origin: wild collection.

U.S.A., Washington, Garfield County: Along Highway 12 at Alpowa Summit. Elev. 2785 ft.
46.43604° N, 117.42607° W
Coordinate Source: Specimen Label.

Along highway at summit with Lactuca serriola. Contains milky latex. In flower and fruit. Reproductive state: Flowers and Fruits. Origin: Native.

U.S.A., Washington, Asotin County: On the side of Silcott Grade Road, south of Highway 12. Elev. 875 ft.
46.40902° N, 117.19941° W
Coordinate Source: Specimen Label.

With Lactuca serriola. Reproductive state: Fertile. Origin: Native.

U.S.A., Washington, Pierce County: JBLM, TA-2, McKay Marsh. Elev. 80 m.
47.10027° N, 122.61534° W
Datum: WGS 84. Coordinate Source: GPS.

Locally common on edge of road, with Hypericum perforatum, Senecio jacobaea. Origin: Native.

U.S.A., Washington, Grant County: Shoulder of D 7 Road ca 2.7 road km south or junction with Road 20 NE, southeast of Soap Lake. Site ID: BSL-1351. Elev. 362 m.
47.363153° N, 119.390359° W
Datum: WGS 84. Coordinate uncertainty: 4 meters. Georeferenced by Ben Legler. Coordinate Source: GPS.

Dry gravel road shoulder adjacent to alfalfa field. Flowers cream-colored; plants uncommon among alfalfa. Reproductive state: Flowers.

U.S.A., Washington, Douglas County: Columbia River, Rock Island ponds.
T22N R21E S23
47.38422°, -120.16506°. Coordinate uncertainty: 1200 meters. Georeferenced by Joseph Stormer.

Riparian area around the pond. Occasional Siberian elm, cottonwood, reed canarygrass, Juncus sp. On an old roadbed between ponds. Reproductive state: Fruits. Origin: Native.

U.S.A., Idaho, Owyhee County: Piute Creek Reservoir in Piute Basin, south of E. Fork Owyhee River, in northeastern YP Desert. Elev. 4660 ft.
42.2099° N, 116.64678° W
Datum: NAD 83. Coordinate Source: Specimen Label.

At drying reservoir with mostly weedy vegetation including Centaurea diffusa, Echinochloa, Cirsium vulgare, Polygonum aviculare, and in the middle, Persicaria lapathifolium, Rumex triangulivalvis. Reproductive state: Flowers.

U.S.A., Idaho, Owyhee County: Along Sheep Creek about 12 miles SE from Grasmere. Elev. 4850 ft.
42.2046° N, 115.74364° W
Datum: NAD 83. Coordinate Source: Specimen Label.

In riparian muds along the edge of the creek. Reproductive state: Flowers.

U.S.A., Idaho, Owyhee County: Blackstock Spring, about 17 air miles SW of Marsing. Elev. 4900 ft.
43.313073° N, 116.936283271556° W; UTM Zone 11, 505167E, 4795584N; T.1S, R.5W, Sec 28 NE 1/4
Datum: NAD 83. Coordinate Source: Calc. from UTM.

Meadowy area below spring, within burned Wyoming sagebrush community. Moist soil. Associated Species: Juncus arcticus, Achillea millefolium, Cirsium vulgare, Iva axillaris, Poa, Gnaphalium palustre, Rumex crispus. Localized. Flowers white.

United States, California, Yuba: On damp soil, on the bottom of the spillway area at the west side and near the top of Lake Francis Dam, below the high water line of Lake Francis about 1 1/2 miles south of Dobbins. Common. Elev. 1681 feet
39.359778°, -121.20652°.

On damp soil, on the bottom of the spillway area; Foothill Woodland (destroyed) Common; small size plant. https://oregonflora.org/collections/individual/index.php?occid=4439835. Origin: wild collection.

U.S.A., Idaho, Boise County: Grimes Creek Elev. 1101 m.
43° 46\' 55.89" N, 115° 58\' 26.27" W

dried pond and surroundings, Eleocharis, Ranunculus corolla white

U.S.A., Montana, Lincoln County: Roadside slope along US Hwy 2, 6 mi W of Libby. Elev. 2090 ft.
48° 26\' 41.64" N, 115° 40\' 30.108" W

U.S.A., Montana, Flathead County: Lost Trail NWR; The west end of Dahl Lake. Elev. 3600 ft.
48° 10\' 29.2" N, 114° 50\' 33.2" W; T28N R26W S24
Coordinate Source: Specimen Label.

Local along the old gravel road that crosses the west end of Dahl Lake. With Agrophyron repens and Alopecurus arundinaceus. Reproductive state: Flowers.

U.S.A., Oregon, Malheur County: Mud Springs in Leslie Gulch, ca 24 airmi NNE of Jordan Valley, Elev. 1105 m.
43.294° N, 117.256° W
Coordinate Source: Specimen Label.

muddy and saturated ground in full sun, Flowers white.

U.S.A., Washington, Lewis County: On west bank of Cowlitz River adjacent to Mountain View Drive, ca 6 air km northeast of Packwood. Site ID: BSL-1093. Elev. 350 m.
46.648464° N, 121.62848° W
Datum: WGS 84. Coordinate uncertainty: 50 meters. Georeferenced by Ben Legler. Coordinate Source: Digital Map.

Large, open gravel and sand bars along river, backed by colonizing thickets of Populus and Salix, with patches of Cytisus scoparius. Flowers cream-colored; plants common. Reproductive state: Flowers and Fruits.

U.S.A., Washington, Kittitas County: Between West Sparks Road and I-90, Easton, Washington
47.246881° N, 121.185275° W
Coordinate Source: Specimen Label.

Vacant lot. Reproductive state: Fertile. Origin: Native.

U.S.A., Washington, Kittitas County: Between West Sparks Road and i-90, Easton, Washington.
47.246881° N, 121.185275° W

Vacant lot. Reproductive state: Fruits. Origin: Native.

U.S.A., Washington, Adams County: At the edge of parking lot at the Conoco gas station off Pence Road. Northwest of the intersection of HIghway 26 and Highway 395.
46.79386° N, 118.75444° W

Growing with Salsola tragus. Common. Reproductive state: Fruits. Origin: Native.

U.S.A., Idaho, Valley County: Payette National Forest; 2.4 miles from Lick Creek Summit. Elev. 1825 m.
45.05006° N, 115.91565° W
Datum: WGS 84. Coordinate uncertainty: 28 meters. Coordinate Source: GPS reading.

Roadside stream with granitic slabs and rocky, sandy soil. With Spiraea, Physocarpus, Ceanothus, Rubus, and Picea. Rays light pink-white. Rays very narrow, barely exceeding discs. Reproductive state: Flowers. Origin: Native.

U.S.A., Montana, Fergus County: 1.9 mi S of bridge at Judith Landing, 0.2 mi S of Clagett Trail Historic Point on state road 236; 21 mi N of Winifred. Elev. 2421 ft.
47° 26\' 26.88" N, 109° 22\' 30.72" W

Elevation, Latitude and Longitude taken from GNIS at Judith Landing Historical Marker. Reproductive state: Flowers & Fruits.

U.S.A., Idaho, Elmore County: North Fork Boise River, road to Atlanta Elev. 3652 ft.
43° 43.984\' N, 115° 35.824\' W
Coordinate Source: Specimen Label.

riverside and Pinus ponderosa forest, roadside flowers white

United States, Washington, Adams: Northwest of the intersection of Highway 26 and Highway 395.
46.79386°, -118.75444°.

Common at the edge of parking lot at the Conoco gas station off Pence Road. Associated taxa: Salsola tragus. https://intermountainbiota.org/portal/collections/individual/index.php?occid=30932234.

U.S.A., Washington, Klickitat County: Port of Klickitat, Bingen.
45.714842°, -121.46451°. Datum: WGS 84. Coordinate uncertainty: 1500 meters. Georeferenced by Dan Post. Coordinate Source: GeoLocate.

Weedy wasteland. Reproductive state: Flowers. Origin: Native.

Canada, British Columbia: Vancouver Island, Errington Gravel Pit, 3 km west of Parksville, north side of Alberni Highway at Errington Road. Elev. 80 m
49.307778°, -124.36861°.

Dry sandy areas of gravel pit. Common in the pit; drought tolerant.

U.S.A., Idaho, Owyhee County: Along Deep Creek approx. 1/2 mile downstream from where Deep Creek crosses Mud Flat Rd. At the start of hairpin turns in Deep Creek. Elev. 5229 ft.
42.57763° N, 116.68032° W
Datum: NAD 83. Coordinate uncertainty: 6 meters. Coordinate Source: GPS. Error radius calculated from georeference precision

Growing in heavily grazed riparian area with cows present at bottom of canyon lined with rhyolite columns. Eroded stream banks with several beaver dams creating isolated pools. Associates: Salix sp., Juncus bufonius and Cyperus squarrosus. Reproductive state: Fruits.

U.S.A., Idaho, Owyhee County: North Fork Owyhee campground on Mud Flat Road, 26 air miles southeast of Jordan Valley. Along river bank upstream from bridge. Elev. 4768 ft.
42.59195° N, 116.97997° W
Datum: NAD 83. Coordinate uncertainty: 6 meters. Coordinate Source: GPS. Error radius calculated from georeference precision

Lush riparian habitat with Salix, Prunus, Eleocharis bella, and Juncus bufonius. At bottom of canyon lined with rhyolite columns. Reproductive state: Fertile.