Hymenoxys richardsonii

{{Short description|Species of plant}}

{{Speciesbox

| image = Hymenoxys richardsonii (7461244850).jpg

| image_caption = Bozeman, Montana

| status = {{TNCStatus}}

| status_system = TNC

| genus = Hymenoxys

| species = richardsonii

| authority = (Hook.) Cockerell 1904

| synonyms_ref = [http://www.tropicos.org/Name/2702711 Tropicos, Hymenoxys richardsonii (Hook.) Cockerell ][http://www.theplantlist.org/tpl1.1/record/gcc-65948 The Plant List, Hymenoxys richardsonii (Hook.) Cockerell ]

| synonyms =

• Picradenia richardsonii Hook. 1833
• Actinea richardsonii (Hook.) Kuntze
• Actinella richardsonii (Hook.) Nutt.
• Hymenoxys floribunda (A.Gray) Cockerell
• Hymenoxys olivacea Cockerell

}}

Hymenoxys richardsonii, the pingue hymenoxys or pingue rubberweed, is a North American species of plants in the sunflower family. It is widespread across the western United States and western Canada from Arizona, New Mexico, and western Texas north as far as Alberta and Saskatchewan.[http://bonap.net/MapGallery/County/Hymenoxys%20richardsonii.png Biota of North America Program 2014 county distribution map]

;Varieties[http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066995 Flora of North America, Hymenoxys richardsonii (Hooker) Cockerell, 1904. Richardson’s bitterweed, pingue rubberweed ]

• Hymenoxys richardsonii var. floribunda (A.Gray) K.F.Parker – Arizona, Colorado, New Mexico, Texas, Utah
• Hymenoxys richardsonii var. richardsonii – Alberta, Saskatchewan, Colorado, Montana, North Dakota, Utah, Wyoming