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Wildflowers of Texas, Plant Resources Center, University of Texas at Austin

Flor de San Juan   Telosiphonia macrosiphon    
Dogbane family — Apocynaceae

Also known as:
Longtube Trumpet Flower, Rock Trumpet

Slides: (click for larger view)


The distinctive feature of this wildflower is the long very thin tube of the flower, to four inches in length, below the spreading white lobes of the corolla. This is a low-growing almost shrubby plant, found in very rocky or thin-soiled areas of the western Edwards Plateau and the Trans-Pecos.

Dried Specimens: (click for larger view)


Flowering Months: May, June, July, August, September

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