| 21. | Density-dependent root gnawing by rodents is proposed as one such mechanism in the Larrea-Opuntia system.
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| 22. | On " Opuntia quimilo " the larvae occur in the flowers and the crown of the fruit.
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| 23. | Cochineal is a red dye produced by a scale insect that lives on species of " Opuntia ".
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| 24. | A primarily cacti from the genus " Opuntia ", feeding on moisture and nutrients in the cacti.
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| 25. | Where hammock edges grade into coastal marshes semaphore cactus ( " Opuntia corallicola " ) can be found.
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| 26. | That which is not lake is primarily grasslands with some opuntia, huisache ( Acacia ) and other arid plants.
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| 27. | The padded and low-growing Opuntia, commonly called prickly pear, is the best known of this tolerant bunch.
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| 28. | A delicate rose color in Navajo rugs comes from fermented prickly pear cactus fruit, " Opuntia polyacantha ".
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| 29. | Other plants, such as opuntias, have hairs or spines that cause mechanical irritation, but do not inject chemicals.
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| 30. | Introduced species associated to disturbed areas, such as agaves and opuntias, are found with remnants of the native flora.
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