ASCLEPIADACEAE (Milkweed family)

Asclepias asperula (Dcne.) Woods. ssp. asperula spider milkweed [US; Arizona; Yavapai County; Prescott; T13N, R2W, S4; 5,600 feet][on hill overlooking 500 block of S. Pleasant St.; May 17, 1993; Collected & identified by Chuck Walker; #AZ85]

Asclepias cordifolia (Benth.) Jepson heartleaf milkweed [US; California; Lassen County; T38N, R6E, S20; 41 deg. 6.937'N, 121 deg. 18.108'W; 3,760 feet][along 4WD road, ~ one mile northeast of Crum Reservoir; July 11, 2005; Collected by Lisa Anderson & Chuck Walker; Identified by Chuck Walker; #CA280]

Asclepias curassavica L. bloodflower [US; Florida; Broward County; Sunrise; T50S, R40E, S4; 5 feet][along path around lake in Markham County Park; December 28, 1997; Collected & identified by Chuck Walker; #FL16]

Asclepias fascicularis Dcne. Mexican whorled milkweed [US; California; Modoc County; T39N, R7E, S3; 41 deg. 14.873'N, 121 deg. 9.763'W; 4,180 feet][along northwest shore of Little Roberts Reservoir; July 7, 2004; Collected by Matt Minarchek & Chuck Walker; Identified by Chuck Walker; #CA34]

Asclepias hirtella (Pennell)Woods. green milkweed [US; Illinois; Jackson County; Ward; T8S, R1W, S5; 37 deg. 51.248'N, 89 deg. 13.839'W; 410 feet][Faulkner-Franke Nature Preserve, southern end of paint test strip road; July 8, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL341]

Asclepias incarnata L. ssp. incarnata swamp milkweed [US; Iowa; Fremont County; Riverton; T68N, R41W, S19; 900 feet][spillway on southern edge of Riverton Wildlife Management Area, Highway 2; June 13, 1999; Collected & identified by Chuck Walker; #IA20]

Asclepias latifolia (Torr.) Raf. broadleaf milkweed [US; Arizona; Yavapai County; Chino Valley; T15N, R2W, S3; 4,840 feet][south side of Outer Loop Rd, 100 m west of Highway 89; July 20, 1996; Collected & identified by Chuck Walker; #AZ337]

Asclepias perennis Walter aquatic milkweed [US; Illinois; Johnson County; 360 feet][bottomland woods; July 13, 2002; Collected by Chuck Walker; Identified by Dr. Mark A. Basinger; #IL353]

Asclepias perennis Walter aquatic milkweed [US; Mississippi; Washington County; T19N, R7W, S26; 33 deg. 28.134'N, 90 deg. 54.076'W; 115 feet] [in water on the south side of bald-cypress swamp, 5-10 m west of Experiment Farm Rd., Delta Experimental Forest; August 31, 2008; Collected & identified by Chuck Walker; #MS162]

Asclepias subulata Dcne. rush milkweed [US; Arizona; Yuma County; T13S, R18W, S2; 1,050 feet][three miles northwest of Tinajas Altas, Barry M. Goldwater Air Force Range; November 11, 1996; Collected & identified by Chuck Walker; #AZ412]

Asclepias subverticillata (Gray) Vail horsetail milkweed [US; Arizona; Yavapai County; Prescott; T14N, R2W, S34; 5,390 feet][between Highway 69 & Memorial Cemetery; June 23, 1993; Collected & identified by Chuck Walker; #AZ123]

Asclepias syriaca L. common milkweed [US; Iowa; Fremont County; Riverton; T68N, R41W, S18; 940 feet][south side of #2368 (to Check Station), Riverton Wildlife Management Area; July 5, 1999; Collected & identified by Chuck Walker; #IA50]

Asclepias tuberosa L. ssp. interior Woods. butterfly milkweed [US; Arizona; Yavapai County; Prescott; T13N, R2W, S8; 5,500 feet][northeast quadrant Hemlock Ave-Clubhouse Dr; June 19, 1995; Collected & identified by Chuck Walker; #AZ174]

Asclepias viridiflora Raf. green comet milkweed [US; Illinois; Monroe County; Fults; T4S, R10W, S27; 580 feet][limestone glade, Fults Hill Prairie Nature Preserve; July 22, 2002; Collected by Chuck Walker; Identified by Dr. Mark Basinger #IL388]

Asclepias viridis Walt. green antelopehorn [US; Louisiana; Calcasieu Parish; Lake Charles; T10S, R8W, S20; 15 feet][east side of Kirkman St., east of Cherryhill St.; April 9, 1994; Collected & identified by Chuck Walker; #LA57]

Cynanchum laeve (Michx.) Pers. honeyvine [US; Illinois; Calhoun County; Brussels; T13S, R1W, S15; 425 feet][south side of Landing Strip, Two Rivers National Wildlife Refuge; July 26, 2000; Collected & identified by Chuck Walker; #IL41]

Funastrum cynanchoides (Dcne.) Schlechter ssp. cynanchoides fringed twinevine [US; Arizona; Pima County; T15S, R10W, S28; 900 feet][dry wash behind Papago Well, Cabeza Prieta National Wildlife Refuge; November 9, 1996; Collected & identified by Chuck Walker; #AZ403]

Matelea gonocarpos (Walt.) Shinners angularfruit milkvine [US; Illinois; Hardin County; Elizabethtown; T12S, R9E, S20; 37 deg. 27.525'N, 88 deg. 13.709'W; 430 feet][along trail leading up from Tower Rock Boat Launch; August 3, 2002; Collected & identified by Chuck Walker; #IL412]

Matelea obliqua (Jacq.) Woods. climbing milkvine [US; Illinois; Hardin County; 480 feet][July 5, 2002; Collected by Chuck Walker; Identified by Dan Spivey; #IL340]