[Wikipedia] Range, Habitat, Description: Clarkia concinna is a species of wildflower known as red ribbons.[1] It is endemic to California, where it can be found in the low-elevation mountains of the northern part of the state. This is an annual plant with erect, herbaceous stems. The distinctive flowers have four looping sepals of red or dark pink which look like loops of silk ribbon. The longer, pink petals have three lobes which are usually streaked with white. (link added by Mary Ann Machi)
Calflora:
Information on California plants for education, research and conservation,
with data contributed by
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[web application]. 2025.The Calflora Database
[a non-profit organization].Available:
https://www.calflora.org/(Accessed: 03/29/2025).