Elaphoglossum pattersoniae

Elaphoglossum pattersoniae is a very rare species of fern that is native to Peru and Bolivia.[1] It is very close to E. guamannianum, but is smaller in size, its blade apex is acute-obtuse, it lacks dark arachnidoid scales on its abaxial costa and has fewer blade scales.[2] It is named after Juliet Patterson, a New York Botanical Garden collaborator.

Elaphoglossum pattersoniae
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Class: Polypodiopsida
Order: Polypodiales
Suborder: Polypodiineae
Family: Dryopteridaceae
Genus: Elaphoglossum
Species:
E. pattersoniae
Binomial name
Elaphoglossum pattersoniae
Mickel[1]

Description

Its rhizome is compact and horizontal; its scales linear and a lustrous red-brown in colour, about 4 millimetres (0.16 in) in size. Phyllopodia are present, with fasciculate fronds which are between 6 and 16 centimetres (2.4 and 6.3 in) long and between 1.2 and 1.8 centimetres (0.47 and 0.71 in) broad. Its scales are between 1 and 2 millimetres (0.039 and 0.079 in). Its veins are at a 55-60° angle, and hydathodes are lacking.[2] Its costal scales are of an orange-tan colour and it lacks intersporangial scales.

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References
  1. Hassler, Michael & Schmitt, Bernd (January 2020), "Elaphoglossum pattersoniae", Checklist of Ferns and Lycophytes of the World, Version 8.20, retrieved 2020-01-30
  2. Mickel, John T. "Three new species of Elaphoglossum from Peru." American fern journal 80.3 (1990): 110-112.


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