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Brittonia

, Volume 70, Issue 1, pp 31–39 | Cite as

The hybrid nature of Danaea plicata (Marattiaceae), a Costa Rican endemic

  • Robbin C. Moran
  • Michael H. Grayum
Article
  • 65 Downloads

Abstract

We present evidence that Danaea plicata, endemic to Costa Rica, is a hybrid between D. carillensis and D. crispa. The laminae of D. plicata are intermediate in several morphological characters between the two putative parents, and the spores of D. plicata are misshapen and collapsed. The stomatal density of D. plicata is intermediate between that of D. crispa, which has no stomata, and D. carillensis. Circumstantial evidence also supports hybrid origin: D. plicata occurs only within the elevational range of its putative parents, and it is often found growing with them. This is the second report of a hybrid in Danaea. A lectotype is designated for D. plicata .

Keywords

Ferns floristics hybrids systematics 

Notes

Acknowledgements

We thank the following colleagues: Germinal Rouhan for searching at P for various type specimens of Hermann Christ; Paulo Labiak for generating the Additional Specimens Examined section from our Excel database; Fernando Matos for preparing the dot-distribution maps from our Excel database; Li-Bing Zhang for informing us about the hybrid Angiopteris otoi; and James Eddie Watkins for allowing us to use his photograph in Fig. 3B.

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Copyright information

© The New York Botanical Garden 2017

Authors and Affiliations

  1. 1.The New York Botanical GardenBronxUSA
  2. 2.The Missouri Botanical GardenSt. LouisUSA

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