Which of the following descriptions fits best?

Trilete spores; e.g. Pteridium, Botrychium, Selaginella; Fig.: Botrychium lunaria

tricolpate, long colpi clearly visible; no margo; exine thinner near the colpi; reticulate

tetrad; tricolpate or tricolporate; psilate, scabrate or verrucate

three elongated apertures arranged in a "Y" ("Mercedes star")

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