Nomenclature: wfo-0001289389
![Thomas J. Howell (1842-1912) Thomas J. Howell (1842-1912)](http://commons.wikimedia.org/wiki/Special:FilePath/Thomas%20J.%20Howell%2C%20Botanist%20of%20the%20Pacific%20Northwest.jpg)
Opuntia echios in Proc. Calif. Acad. Sci., ser. 4, 21: 49. 1933.
Nomenclatural References
- person : Thomas J. Howell (1842-1912) Based on occurrence of standard abbreviation 'Howell' in the authors string.
- database : The Plant List version 1.0, record: tro-5107347
- database : The Plant List version 1.1, record: tro-5107347
Taxonomy: Accepted in 2018-07 classification
Occurs in: 2018-07 : 2019-03 : 2019-05 : 2021-12 : 2022-06 : 2022-12 : 2023-06 : 2023-12Placement: Caryophyllales > Cactaceae > Opuntia > Opuntia echios