widespread

Opuntia cespitosa, Common Eastern Pricklypear

7 Comments / Common Eastern Priklypear / Joseph

See O. humifusa See O. lata See O. mesacantha Rafinesque, Bulletin Botanique 2: 216, 1830 Neotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Original Description; Drawing (Britton and Rose v1, 1919) What is Opuntia cespitosa? Opuntia cespitosa is a widespread eastern North American prickly-pear forming low, cespitose clumps […]

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Opuntia stricta, Shell Mound Pricklypear

(Haworth) Haworth, Synopsis Plantarum Succulentarum 191, 1812 Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium O. stricta has similarities with O. dillenii, another beach prickly pear O. stricta is different from O. anahuacensis, but they are both beach prickly pears. Original Citation What is Opuntia stricta? Opuntia stricta is a coastal prickly pear

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Opuntia polyacantha, Common Pricklypear

2 Comments / All Pricklypears, Canyon Pricklypear, Dwarf Mountain Cactus, Juniper Pricklypear, Mojave Pricklypear, Plains Pricklypear, Porcupine Cactus, Utah Hunger Cactus / Joseph

Haworth, Supplementum Plantarum Succulentarum 82, 1819 Original Description What is Opuntia polyacantha? Opuntia polyacantha is a variable prickly pear cactus ranging from Mexico near California, to Texas, to the Rocky Mountain states, the Great Plains, and north into Alberta and Saskatchewan. In 2018, a disjunct population was discovered in the Thousand Islands region of Ontario, Canada. This

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Opuntia Web

53 Comments / Uncategorized / Joseph

Last updated July 2024. Opuntias are the prickly pear cacti. There are over 90 species of Opuntia in the United States. We describe them here. Opuntias are unique cacti with unusual shapes and beautiful flowers. They are part of the opuntiad supergroup of cacti. The “big three” states for Opuntias are Texas, New Mexico, and

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Opuntia macrorhiza, Prairie Pricklypear, Prarie Rose

2 Comments / All Pricklypears, Prairie Pricklypear / Joseph

Engelmann, Boston Journal of Natural History 6: 206, 1850 Holotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (O. macrorhiza-like); Herbarium; Herbarium Herbarium; Herbarium; Print (Britton and Rose, v1 1919, plate XXVIII); Print (Addisonia, 1916, plate 19); Print See O. cespitosa, a similar eastern plant O. pottsii can be mistaken for O. macrorhiza. Original Description

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Opuntia humifusa, Eastern Pricklypear

7 Comments / All Pricklypears, Eastern Pricklypear / Joseph

(Rafinesque) Rafinesque, Flora Medica (or Manual of the Medical Botany of the United States of North America) 2: 247, 1830 Neotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (as O. calcicola); Herbarium (as Cactus humifusus); Herbarium (as Cactus opuntia) Drawing (Curtis’s Botanical Magazine, vol. 50: pl 2393, 1823 [as Cactus opuntia]); Drawing (Audubon, Birds of America [double elephant folio edition, plate

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Opuntia gilvescens, Bajada Pricklypear

Leave a Comment / All Pricklypears, Bajada Pricklypear / Joseph

Griffiths, Annual Report of the Missouri Botanical Garden 20: 87, 1909 Holotype (as O. gilvescens); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium. Except where indicated, all specimens were originally interpreted as O. phaeacantha. O. gilvescens is related to O. camanchica O. gilvescens is related to O. phaeacantha Original Description What is

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Opuntia orbiculata, Round-pad Pricklypear

2 Comments / All Pricklypears, Round-pad Pricklypear / Joseph

Salm-Dyck ex Pfeiffer, Enumeratio diagnostica cactearum hucusque cognitarum 156, 1837 Herbarium (as O. crinifera); Herbarium (seedling); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Note: unless indicated otherwise, all herbarium specimens were submitted as O. engelmannii; Herbarium (O. dillei); Herbarium; (O. dillei); Painting Original Description What is Opuntia orbiculata? O. orbiculata is a large prickly pear cactus that

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Opuntia engelmannii, Engelmann Pricklypear

2 Comments / All Pricklypears, Engelmann Pricklypear / Joseph

Salm-Dyck ex Engelmann, Boston Journal of Natural History 6(2): 207, 1850 Lectotype; Isotype (of O. gregoriana); Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium (as O. gregoriana); Herbarium (as O. gregoriana) See O. lindheimeri See checklist of differences between O. lindheimeri and O. engelmannii Original Description What is

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Opuntia phaeacantha, Tulip Pricklypear, Brown-spine Pricklypear

2 Comments / All Pricklypears, Tulip Pricklypear, Brown-spine Pricklypear / Joseph

Engelmann, Memoirs of the American Academy of Arts and Science n.s. 4(1): 51, 1849 Lectotype; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Herbarium; Painting O. phaeacantha shares similarities with O. camanchica O. phaeacantha shares similarities with O. gilvescens Original Description What is Opuntia phaeacantha? Opuntia phaeacantha is a common and

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