Robert W. Freckmann Herbarium


  Opuntia macrorhiza Engelm. image
Photographer: Hugh H. Iltis           

Derek Anderson

Derek Anderson

Hugh H. Iltis

Hugh H. Iltis

Paul Drobot

Paul Drobot

Paul Drobot

Paul Drobot
Family Cactaceae
Opuntia macrorhiza Engelm.
plains prickly-pear, twist-spine prickly-pear
Opuntia: Greek name used by Pliny for a different plant which grew around the town of Opus in Greece
macrorhiza: with large roots or root stocks
County distribution map- click for detailed distribution maps.
Detailed Distribution:
Town Range Maps
Google Dot Maps
Status: Native
Plant: prostrate/spreading/erect, perennial, spiny shrub forming mats up to 5' wide; stems joints very flat and difficult to detach, pads broadly oval
Flower: yellow, sometimes with a red center, 7 or more-parted, up to 3" wide; blooms May-July
Fruit:red-purple, fleshy, wingless, juicy, edible; seeds disc-like with rough, corky edges seed drawing
Leaf:usually with several spines together
Habitat: dry; prairies
(Glossary)

More Information Natural Communities Herbarium Specimens
All Opuntia list Ethnobotany Information Google- Images or Text

Flora of North America (off site)
Synonyms 
Opuntia compressa J.F.Macbr. var. grandiflora (Engelm.) Weniger
Opuntia compressa J.F.Macbr. var. macrorhiza (Engelm.) L.D.Benson
Opuntia compressa J.F.Macbr. var. stenochila (Engelm.) Weniger
Opuntia grandiflora Engelm.
Opuntia leptocarpa Mackensen
Opuntia mackensenii Rose
Opuntia macrorhiza Engelm. var. macrorhiza
Opuntia mesacantha Raf. var. macrorhiza (Engelm) J.M.Coult.
Opuntia plumbea Rose
Opuntia tortispina Engelm. & Bigelow

         
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