Practice Question 1:
Given the following names that apply to the same taxon, what is the correct name? They were validly published by different taxonomists working in different places at different times.
Erythronium obtusanum Goodd. (1902)
Erythronium nuttallianum Regel (1871)
Erythronium utahense Rydb. (1917)
Erythronium grandiflorum Pursh. (1814)