BLUE - Some Thelymitras
The usual "blue" in orchids is coerulea, which is more blue-violet. But some of these Australian terrestrials are really, really blue. Thel. nuda and Thel. glaucophylla are intensely blue. They're very closely related - there are several blue species in the Thel. nuda complex. The little Thel. pauciflora is more violet, and the primary hybrid Thel. glaucophylla x grandiflora has just a bit of violet, not quite as blue as glaucophylla, but somewhat larger. A couple of photos with my hand to show relative sizes.
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