Wyoming, we saw Calochortus in several places. I'm having trouble
deciding whether these were Calochortus gunnisonii or Calochortus
nuttallii, or one species in one site and the other elsewhere. Both
species are reported to occur where we were, and both are quite
variable. Can anyone advise me about distinguishing characteristics?
Check this out.
http://swcoloradowildflowers.com/White%20Enlarged%…
The band of maroon is apparently diagnostic for C. nuttallii.
Bob Nold
Denver, Colorado, USA
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