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RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 7250 Timothy W. Chumley Randy Pratt 1997 10 2 275 U.S.A. Colorado El Paso East-central Colorado: Mosquito Range to Plains: at scenic overlook on I-25, ca 1/3 air mi E of U. S. Air Force Academy airport, ca 9 air mi N of Colorado Springs. -104.807 38.974 2006 Weedy, highly disturbed ground with sandy soils along roadway. Phenology: fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 63463 B. E. Nelson 2004 9 24 268 U.S.A. Arizona Coconino Coconino National Forest: SE of switch back on County Road 128 at base and lower slope of Anderson Mesa, ca 10 air mi SE of Flagstaff. -111.5294 35.0879 2097 2164 Roadside. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 63592 B. E. Nelson James F. Fowler 2004 9 25 269 U.S.A. Arizona Coconino Coconino National Forest: in and along James Canyon from I-17 W, ca 11 air mi S of Flagstaff. -111.6907 35.0466 1981 2012 Rocky shallow canyon. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 63610 B. E. Nelson James F. Fowler 2004 9 25 269 U.S.A. Arizona Coconino Coconino National Forest: in and along James Canyon from I-17 W, ca 11 air mi S of Flagstaff. -111.6907 35.0466 1981 2012 Rocky shallow canyon. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 80089 Ronald L. Hartman 2004 8 23 236 U.S.A. Arizona Coconino Coconino National Forest: U.S. Hwy 180, ca 5 air mi NW of Flagstaff center, between mile posts 220-221. -111.6862 35.2456 2195 Highway right of way including ponderosa pine margin. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 80196 Ronald L. Hartman 2004 8 29 242 U.S.A. Arizona Coconino Coconino National Forest: County Road (Forest Hwy) 3, just SW of Mormon Lake Ranger District Office, for 0.7 air mi SW of coordinate. -111.656 35.1526 2134 Ponderosa pine woodland and adjacent highway right of way. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 80310 Ronald L. Hartman James F. Fowler 2004 8 29 242 U.S.A. Arizona Coconino Coconino National Forest: ca 8 air mi SSW of Flagstaff; Kelly and Fry canyons, area of intersection. -111.7169 35.0588 1920 1981 Stream bottom. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 67649 B. E. Nelson James F. Fowler 2005 9 25 268 U.S.A. Arizona Coconino Kaibab National Forest: along Ariz Hwy 64 in the Upper Basin between Lee Canyon and Coconino Rim at the Navajo Nation-Forest boundary, ca 18 air mi WNW of Cameron; ca 50.5 air mi N of Flagstaff. -111.7271 35.9269 1914 Pinyon/juniper/sagebrush. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 69658 B. E. Nelson James F. Fowler 2006 8 23 235 U.S.A. Arizona Coconino Coconino National Forest: northwest edge of Black Bill Park just E of U.S. Hwy 89 on Forest Road 776, ca 10.5 air mi NE of Flagstaff. -111.5448 35.3292 2073 Roadside and adjacent disturbed areas. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 69693 B. E. Nelson James F. Fowler 2006 8 23 235 U.S.A. Arizona Coconino Coconino National Forest: Cinder Lake on Forest Road 776 in Cinder Hills OHV Area, ca 11.5 air mi NE of Flagstaff. -111.5235 35.3287 2036 Cinder flats. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 69740 B. E. Nelson James F. Fowler 2006 8 24 236 U.S.A. Arizona Coconino Coconino National Forest: frontage road (old U.S. Hwy 66) along I-40 on Bellemont Flat, just W of Bellemont Exit and just N of Camp Navajo Army Depot, ca 10.5 air mi WNW of Flagstaff. -111.8284 35.2426 2173 Cinder roadbank and pavement edge. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 70518 B. E. Nelson James F. Fowler 2006 8 28 240 U.S.A. Arizona Coconino Coconino National Forest: along gas pipeline from Forest Road 420 E, ca 1/4 mi N of Weatherford Canyon, on southeast base of San Francisco Mountain, ca 7 air mi NNE of Flagstaff. -111.6096 35.2912 2326 2347 Stony pipeline right-of-way on easterly-facing slope in ponderosa pine forest. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 84021 Ronald L. Hartman 2006 9 14 257 U.S.A. Arizona Coconino Coconino National Forest: roadside pullout on I-17, ca 9 air mi SE of Sedona. -111.6002 34.808 1920 1951 Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 84375 Ronald L. Hartman James F. Fowler 2006 9 14 257 U.S.A. Arizona Coconino Coconino National Forest: Transfer Station at Willard Interchange on I-17. -111.6925 34.9736 2054 Roadsides and disturbed areas around station. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 11741 Erin Foley 2004 8 16 229 U.S.A. Colorado Clear Creek Arapaho National Forest: Front Range: along Colo Hwy 103, ca 2.5 air mi WSW of Idaho Springs and ca 7 air mi ENE of Georgetown. -105.5625 39.7237 2408 Along road. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 11771 Erin Foley 2004 8 18 231 U.S.A. Colorado Grand Middle Park: Hot Sulphur Springs State Wildlife Area: Colorado River Fishing Access from parking area to River, ca 1.5 air mi WNW of Parshall and ca 10 air mi E of Kremmling. -106.2074 40.062 2286 Disturbed area adjacent to parking lot through sagebrush. Phenology: flowering & fruiting. RM FBNM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 98-39 Clayton R. Kyte 1998 9 17 260 U.S.A. Wyoming Lincoln Fossil Butte National Monument: ca 1/4 mi E of upper switchback, midway to Cundick Point. -110.7847 41.877 Roadside. Only 2 plants seen in FBNM so far. photocopy Phenology: flowering & fruiting. RM RM 645282 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 19006 Walter Fertig 1999 8 29 241 U.S.A. Wyoming Natrona Casper Arch: east base of "Broken Horn" ridge along Lone Bear Road, ca 1.2 mi SE of South Fork Bear Creek; ca 11 air mi NNW of Merino. -106.7171 43.3636 1628 Silty-sandy clay base of siltstone knob and sandstone-slate ridge; site dominated by Artemisia tridentata, A. longifolia, and Salsola australis. Phenology: flowering & fruiting. RM USFS 475067 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 739B Peter F. Stickney 1962 8 17 229 U.S.A. Montana Mineral Lolo National Forest: Mouth of Sawmill Gulch, 3.5 mi W of Alberton. -114.5347 46.9995 1 914 Grows on level ground Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 5753 Joy Handley 2000 6 20 172 U.S.A. Idaho Adams Payette National Forest and Vicinity: Salmon River Mountains: west-facing slope of Meadows Hill, just N of Fish Lake, ca 5 air mi SE of New Meadows; ca 6 air mi W of McCall. -116.2185 44.9119 1463 1585 West-facing grassy slope. Phenology: buds. RM RM 933472 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 57520 B. E. Nelson 2002 7 16 197 U.S.A. Wyoming Park [location and coordinates withheld] 1564 1570 Roadside. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 12783 Stuart Markow 2004 8 14 227 U.S.A. Oregon Umatilla City of Pendleton. South side of Southwest Hailey Ave., ca 100 yds. W of intersection with Ore Hwy 395. 304 Roadside weeds including Bromus tectorum, Lactuca serriola, Conyza canadensis, Onapordum acanthium Sonchus asper. Phenology: flowering & fruiting. RM RM 785226 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 25880 Larry C. Higgins 2004 7 15 197 U.S.A. Arizona Coconino Vermillion Cliffs National Monument: N of U.S. Hwy 89A. -111.935 36.707 1 1219 Sandy soil; mixed desert shrub with Poliomintha and sagebrush. Phenology: flowering & fruiting. RM USFS 475067 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 739B Peter F. Stickney 1962 8 17 229 U.S.A. Montana Mineral Lolo National Forest: Mouth of Sawmill Gulch, 3.5 mi W of Alberton. -114.5347 46.9995 1 914 Grows on level ground Phenology: flowering & fruiting. RM USFS 475065 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. ABE-290 Anthony B. Evanko 1954 7 28 209 U.S.A. Washington Ferry Colville National Forest (Pvt. IERC): Intermountain Range Experiment Station: Bremmer Ranch. W. M. -118.6465 48.7788 1 762 Abundant along roads on level in gravelly loam with Kentucky blue, red top, smooth brome, mullein, and clover spp. Phenology: flowering & fruiting. RM RM 706370 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 2159 Bonnie Heidel 2001 8 11 223 U.S.A. Montana Big Horn Bighorn Canyon National Recreation Area, occasional around the parking lot immediately NW of Afterbay Dam. -107.918 45.3106 1 975 Growing on level, gravelly silt loam with Bromus japonicus, Medicago sativa, Heterotheca villosa, Elymus smithi, and Mentha arvensis. Phenology: flowering & fruiting. RM USFS 475063 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 9169 Georgia Mason 1971 8 27 239 U.S.A. Oregon Wallowa Ca 5 mi S of Lostine on the bank of the Lostine River. -117.4905 45.5518 1 1219 Dry rocky river bank with Cirsium and Verbascum. Phenology: flowering & fruiting. RM USFS 475064 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 635 Gerald S. Strickler 1975 8 23 235 U.S.A. Oregon Union Along highway S of Elgin. -117.9239 45.5562 1 853 Disturbed road side. Phenology: flowering & fruiting. RM RM 553936 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 373 John E. Rawlins 1987 6 18 169 U.S.A. Oregon Morrow 13 km ESE Heppner along Willow Creek. -119.4749 45.308 5 730 Dry shallow soil on rocky hillside in sagebrush-grassland. Phenology: flowering & fruiting. RM RM 368353 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 3997 Kaye H. Thorne J. Chandler 1985 7 18 199 U.S.A. Idaho Cassia Strevell 6 mi NE Kelton on Hwy 307. -113.7933 42.0341 3 1600 Weedy disturbed area in abandoned town. Phenology: flowering & fruiting. RM USFS 475068 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 739A Peter F. Stickney 1962 8 17 229 U.S.A. Montana Mineral Lolo National Forest: Mouth of Sawmill Gulch, 3 1/4 mi W of Alberton. -114.5557 46.9995 1 914 Common on level ground. Phenology: flowering & fruiting. RM USFS 475067 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 739B Peter f. Stickney 1962 8 17 229 U.S.A. Montana Mineral Lolo National Forest: Mouth of Sawmill Gulch, 3.5 mi W of Alberton. -114.5347 46.9995 1 914 Grows on level ground Phenology: flowering & fruiting. RM USFS 475067 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 739B Peter f. Stickney 1962 8 17 229 U.S.A. Montana Mineral Lolo National Forest: Mouth of Sawmill Gulch, 3.5 mi W of Alberton. -114.5347 46.9995 1 914 Grows on level ground Phenology: flowering & fruiting. RM USFS 475066 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 914 Peter F. Stickney 1963 9 12 255 U.S.A. Montana Missoula Lolo National Forest: Snow Park, Jocko Mountains; 10 mi N of Missoula. -115.3904 47.0139 1 1646 Infrequent to site on 0-40% with southwesterly exposure on an abandoned mountain road. Phenology: flowering & fruiting. RM USFS 475069 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 915 Peter F. Stickney 1963 9 12 255 U.S.A. Montana Missoula Lolo National Forest: Snow Park, Jocko Mountains; 10 mi N of Missoula. -115.3904 47.0139 1 1646 Scarce on 0-40% with southwesterly exposure on an abandoned mountain road. Phenology: flowering & fruiting. RM RM 553795 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 3495 Richard R. Halse 1987 7 21 202 U.S.A. Washington Klickitat Along Washington Hwy. 14 on the E edge of Bingen. -121.4567 45.701 1 36 In a small weedy field with Eriogonum, Asparagus, Trifolium, Plantago, Bromus, Tragopogon, Cichorium, and Chrysopsis. Phenology: flowering & fruiting. RM RM 765187 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 2374 Sarah Nunn 2001 7 10 191 U.S.A. Colorado Larimer Roosevelt National Forest: Front Range: Big Elk Meadows Road (Forest Road 118) off U.S. Hwy 36 to Estes Park, ca 16 air mi SW of Loveland. -105.4009 40.2623 1 2286 2317 Douglas fir and ponderosa pine foothills with open south facing slopes. Phenology: fruiting. RM RM 765186 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 4010 Sarah Nunn 2001 8 2 214 U.S.A. Colorado Larimer Roosevelt National Forest: Front Range: Hell Canyon Road (Forest Road 4021), from U.S. Hwy 36 to Estes Park, ca 15 air mi SW of Loveland. C -105.4303 40.3406 1 2500 2560 South facing slopes of ponderosa pine, and occasional aspen in shallow ravines. Phenology: fruiting. RM RM 364788 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. s.n. Carl Caulfona 1984 7 30 212 U.S.A. Wyoming Big Horn Bighorn Basin: ca 3 mi S of Burlington, ca 19.5 air mi W of Basin. -108.4199 44.4076 1 1371 Growing on gravel ridge in irrigated pasture. Phenology: flowering. RM RM 761422 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 56215 B. E. Nelson 2001 8 27 239 U.S.A. Colorado Jackson North-central Colorado: North Park: along Colo Hwy 14 in the vicinity of County Road 9 on the north-east side of Peterson Ridge, ca 6.5-7 air mi SW of Walden. -106.3983 40.6625 1 2500 2521 Roadside with dense cover of rabbitbrush. Phenology: flowering. RM RM 718706 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 417 B. Koblitz 2000 7 10 192 U.S.A. Colorado Larimer Along U.S. Hwy 287, 0.1 mi S of Wyoming. -105.411667 40.995 2286 Disturbed area. Phenology: flowering. RM RM 718715 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 585 B. Koblitz 2000 8 2 215 U.S.A. Colorado Larimer Along Larimer County Road 37 (Red Mountain Road) ca 7 mi NE of its intersection with U.S. Hwy 287. -105.273333 40.881667 1951 Roadside. Phenology: flowering. RM RM 718259 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 11159 Robert Merril King Robert M. Garvey 1999 9 16 259 U.S.A. Colorado Adams Broghton Road, ca 4 mi N of Brighton. -104.860833 39.954722 1578 Phenology: flowering & fruiting. RM RM 737182 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 8878 Thomas W. Nelson Jane P. Nelson 1990 7 29 210 U.S.A. Colorado Larimer Ca 5 mi S of Lake Estes: east side of CO Hwy 36. -105.4185 40.3396 1 2378 Mixed evergreen forest. Phenology: flowering. RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 3047 Jean Wood 1995 8 6 218 U.S.A. Washington Stevens Western Colville National Forest and Vicinity: Cottonwood Creek Drainage: ca 9 air mi SE of Chewelah along Forest roads 4342 and 250. -117.5733 48.1418 853 Carex meadows with old and sporadically active beaver dams; ponderosa pine and lodgepole pine on flats; spruce and Douglas fir on slopes. Phenology: flowering. RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 7039 Jean Wood Diane Pavek 1996 8 3 216 U.S.A. Washington Ferry Western Colville National Forest and Vicinity: headwaters of Barnaby Creek, ca 6 air mi SE of Sherman Pass along Forest Road 2014. -118.401 48.5323 1280 Roadside. Phenology: flowering. RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 7079 Jean Wood 1996 8 5 218 U.S.A. Washington Ferry Western Colville National Forest and Vicinity: Graves Mountain, ca 16 air mi WNW of Kettle Falls. -118.3792 48.6342 1219 1798 Mixed forest, rock outcrops, and east and south slopes of mountaintop. Phenology: flowering & fruiting. RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 7080 Jean Wood 1996 8 5 218 U.S.A. Washington Ferry Western Colville National Forest and Vicinity: Graves Mountain, ca 16 air mi WNW of Kettle Falls. -118.3792 48.6342 1219 1798 Mixed forest, rock outcrops, and east and south slopes of mountaintop. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 4255 Heather Bradtke 2001 8 7 219 U.S.A. Oregon Union Umatilla National Forest and Vicinity: near Phillips Creek, ca 6 mi WNW of Elqin. -118.031944 45.589167 975 1006 Sunny disturbed area leading down to the creek; soil fine, deep; slope 0-20; aspect ravine. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 10104 Heather Bradtke 2002 7 27 208 U.S.A. Oregon Wallowa Umatilla National Forest and Vicinity: Wenaha-Tucannon Willderness: Smooth Ridge Trail and along the Wenaha River, ca 34 mi E and 6 mi S of Walla Walla. -117.6 45.980278 609 Along the river. Phenology: flowering & fruiting. RM RM 799985 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. s.n. Stephen L. Enloe 2004 9 7 251 U.S.A. Wyoming Carbon Along I-80 ca 0.5 mi SE of Quealy Gap on Halleck Ridge, ca 9 air mi SE of Hanna. -106.5028 41.7488 2274 In medium strip. With Centaurea maculosa. Phenology: flowering & fruiting. RM RM 823295 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 10512 Robert D. Dorn 2008 7 28 210 U.S.A. Wyoming Natrona Ca 25 mi SSW of Kaycee. -106.786666 43.373333 1768 Roadside, with Verbena, Elymus. Flowers white, some plants purple. Phenology: flowering. RM RM 827894 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 63722 Ronald L. Hartman 1998 8 19 231 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: McCoy Gulch, ca 3.2 air mi S of Cotopaxi. -105.666 38.3207 2240 Oak-pinyon-juniper woodland and openings. Phenology: flowering & fruiting. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 12783 Stuart Markow 2004 8 14 227 U.S.A. Oregon Umatilla City of Pendleton, ca 100 yds SW of intersection of Southwest Hailey Ave and Ore Hwy 395, south side of Southwest Hailey Ave. 335 Roadside weeds including Bromus tectorum, Lactuca serriola, Conyza canadensis, and Tribulis terrestris. Phenology: flowering & fruiting. RM RM 830103 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 10448 Brian Elliott Elizabeth Mark 1999 8 5 217 U.S.A. Colorado Fremont Wet Mountains, Wet Mountain Valley, Sangre de Cristo Range, and Vicinity: Sangre de Cristo Range: ca 2 air mi up Box Canyon, ca 5 air mi SE of Salida on south side of U.S. Hwy 50. -105.9255 38.4742 2134 Riparian, Pinus edulis. Phenology: flowering. RM RM 830104 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 10591 Brian Elliott Elizabeth Mark 1999 8 9 221 U.S.A. Colorado Las Animas [location and coordinates withheld] 2012 Stream bottom, mixed grass and forbs. Phenology: flowering. RM RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 81411 B. E. Nelson 2010 9 19 262 U.S.A. Montana Valley Charles M. Russell National Wildlife Refuge: at Bonetrail Boat Ramp on Fort Peck Lake, ca 47 air mi SW of Glasgow. -107.2486 47.6753 685 731 Flats and low slopes along the reservoir. Phenology: flowering & fruiting. RM RM 961214 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 1996-102 Lori E. Brummer 1996 8 14 227 U.S.A. Colorado Gunnison Gunnison Basin: Blue Mesa Reservoir W of Dillon Pinnacles, ca 25 air mi WSW of Gunnison. -107.28975 38.46592 2317 Disturbed roadside in sagebrush. Rare. Phenology: flowering & fruiting. RM RM 981585 Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 4861 Bonnie Heidel 2018 9 9 252 U.S.A. Wyoming Albany West slope Laramie Range: ca 0.4 mi NE of U.S. Hwy 30, ca 3.2 air mi E of downtown Laramie. -105.5373 41.3096 2277 Old quarry, side slope, south and east aspects; with Gutierrezia sarothrae, Bromus inermis. Locally common. Phenology: flowering. RM Centaurea diffusa physical specimen Asteraceae Centaurea diffusa Lam. 4696 Timothy W. Chumley 1996 7 17 199 U.S.A. Colorado Douglas East-central Colorado: Mosquito Range to Plains: Platte Canyon: along the South Platte River and adjacent canyons and ridges ca 4 air mi NE of town of South Platte. -105.1199 39.4538 1737 2125 Along the banks of the river and adjacent roadway, with large patches of Vitus spp. and Toxicodendron rydbergii. Phenology: flowering & fruiting. 3600 3,1,0 true