3 literature references for Opuntia engelmannii Salm-Dyck ex Engelm.:
| Author: |
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| Year: |
2011 |
| Title: |
– |
| Source: |
Checklist of CITES Species Part 1 CITES species index |
| Author: |
– |
| Year: |
2013 |
| Title: |
– |
| Source: |
The International Plant Names Index, botanical information system from the Royal Botanic Gardens, Kew, the Harvard University Herbaria, and the Australian National Herbarium, available at http://www.ipni.org/index.html |
| Author: |
– |
| Year: |
2013 |
| Title: |
– |
| Source: |
Tropicos, botanical information system at the Missouri Botanical Garden, available at http://www.tropicos.org/ |
