I made a phone call and did a little more research. Apparently, sometime this year, Nacogdoches rose, which was renamed Grandma's Yellow, will be declared the offical Yellow Rose of Texas. Nothing I read claims this designation has already happened. It is a beautiful, pure, bright yellow. This is a discovered rose, so I couldn't find a date.
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Anthurium no. 0599 "Butta"
22 hours ago