Allionia incarnata Linnaeus
The "flowers" of this plant are actually composed of 3 smaller irregular flowers. There are two varieties of A. incarnata differing in flower size.
A. incarnata var. villosa has "flowers" 20 - 25 mm (3/4 - 1 inch) in diameter
Lobo Draw, east side of Florida Mountains 6 June 2005
A. incarnata var. incarnata has "flowers" 5 - 10 mm (3/16 - 3/8 inch) in diameter
Bajada below Mahoney Park, west side of Florida Mountains 22 August 2015
The seeds of both varieties are similar