The scientific names of three wildflowers in the same family are: Calochortus simulans, Calochortus clavatus, and Fritillaria biflora. Which of these flowers would you expect to be the most similar?

Scientific names use the first word to identify the genus and the second word to identify the species. Calochortus simulans and Calochortus clavatus share the genus Calochortus, so they would be expected to be more similar to each other than either is to Fritillaria biflora. They are not the same species, despite sharing a genus.

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