Angiospermae - Poales - Cyperaceae

Alternative combinations: Cyperacites filiferus, Diatryma filifera, Diatryma filiferum

Synonyms: Carpolithus filiferus Cockerell 1923, Eopuntia douglassi Chaney 1944

Belongs to Cyperus according to R. W. Brown 1959

See also Becker 1962, Brown 1934, Chaney 1944, Hay 1930 and Wetmore 1930

Sister taxa: Cyperus articulatus, Cyperus arundinacea, Cyperus braunianus, Cyperus chavannesi, Cyperus compressus, Cyperus elegans, Cyperus esculentus, Cyperus flavescens, Cyperus fuscus, Cyperus haspan, Cyperus iria, Cyperus longus, Cyperus minimus, Cyperus papyrus, Cyperus rotundus, Cyperus strigosus, Cyperus unioloides

Type specimens:

• Cyperus filiferus: U. S. National Museum no. 10908, a root (supposed avian feathers).
• Carpolithus filiferus: U. S. National Museum no. 10908, a root (supposed avian feathers).
• Eopuntia douglassi: 2816, a root (tuberous rootstock).

Ecology: "photoautotroph"

Distribution: found only at Wardell Ranch (PA-106) (Eocene of Wyoming)

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Specimen images are retrieved through the ePANDDA API.