Grammitidaceae (Presl) Ching

Genera 138–142
  • Alice F. Tryon
  • Bernard Lugardon


A largely tropical family of five mostly Old World genera. The spores are trilete, or rarely monolete, chlorophyll bearing, usually spheroidal, or rarely ellipsoidal. The blechnoid exospore forms the papillate surface contours, and an especially thin perispore conforms to the exospore. The endospore and a large pseudoendospore are formed above the cytoplasmic membrane in the precociously germinated spores. Frequent irregularities of the exospore and copious globules that are often fused with the exospore (unusual in other fern spores), add to the distinctiveness of the family.


Chlorophyll Germinate Peri Argentina Ecuador 


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Copyright information

© Springer-Verlag New York Inc. 1991

Authors and Affiliations

  • Alice F. Tryon
    • 1
  • Bernard Lugardon
    • 2
  1. 1.Herbarium, Department of BiologyUniversity of South FloridaTampaUSA
  2. 2.Biologie VégétaleUniversité Paul SabatierToulouseFrance

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