Abstract
Recently I was sent two specimens of tree ferns to identify, which were thought to be Cnemidaria: one by Henk van der Werff at the Missouri Botanical Garden, and another by David Lellinger at the U.S. National Herbarium, which was a duplicate he had received from Missouri. One proved to be new species of Cnemidaria, the other a new, simply pinnate Trichipteris. I am always hesitant to describe new species based only upon single collections, as is the case with these, but each is highly distinctive from others in their respective genera. It is curious that both of these new Panamanian species collected between 1975 and 1982 are very small (for tree ferns) and are simply pinnate.
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