1. The larvae feed on Camissonia bistorta, Camissonia californica, Camissonia dentata and Clarkia rhomboidea.

2. Northern Crayfish (Orconectes virilis) and Red Swamp Crayfish (Procambarus clarkia) What Are They? Crayfish are freshwater crustaceans related to lobsters

3. (Photo by Tania Jogesh) Close-up photos of clarkia flowers show the two types of Anthers, a conspicuous inner whorl and an outer whorl that blends in with the petals

4. Brown was studying pollen grains of the plant Clarkia pulchella suspended in water under a microscope when he observed minute particles, ejected by the pollen grains, executing a jittery motion.