Horseshoe Bend, S side Santa Ana River, 5-31-15. © Ron Vanderhoff.

Oleander

Nerium Oleander

Exotic species, but so widely cultivated that no precise region of origin has been identified. Either native or naturalized to the Mediterranean region and the Sahara, to the Arabian peninsula, southern Asia, and southern parts of China

Back to Apocynaceae of Orange County, California
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Silverado Creek, .4 to 1.7 air. mi E Bl. St. Cyn Rd., 9-17-15. © Ron Vanderhoff.

Horseshoe Bend, S side Santa Ana River, 5-31-15. © Ron Vanderhoff.

Horseshoe Bend, S side Santa Ana River, 5-31-15. © Ron Vanderhoff.

Silverado Creek, .4 to 1.7 air. mi E Bl. St. Cyn Rd., 9-17-15. © Ron Vanderhoff.

San Juan Hot Springs, 7-4-16. © Ron Vanderhoff.