Can You Identify This Ornamental Plant?

Question

I wanted to see if I can get help with identifying a flowering plant that has appeared in my garden. If has small elongated gray green leaves and small white five petaled flowers. It’s about 8 inches tall and a foot across. It is beautiful and has prospered throughout the heat of summer here in North Central Texas. I live in Glen Rose, Texas, about 45 miles southwest of Fort Worth. My soil is rocky, with limestone-derived weathered clay, and weathered bedrock. I enriched the bed in which this plant is found with compost, garden soil, and decomposed granite.

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Answer 1

This looks like Heliotropium tenellum.

This extension service has a description on the plant that is toxic to humans:

https://luna.ku.edu/luna/servlet/detail/kuvc4kwf~4~4~177192~104789:Heliotropium-tenellum--Nutt---Torr-