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Ophioglossaceae family (1 species)

Ophioglossum harrisii
Underwood
, N. Amer. Fl. 16(1): 11.  1909.

Caribbean endemic.
Terrestrial in lower montane rainforest.
Saba, Montserrat, Guadeloupe, Dominica, Martinique, St. Lucia, Grenada, Greater Antilles (Jamaica, Hispaniola).
A single specimen somehow seen by Melvin on the Millet trail!  Really tiny.