BioStor
 | Structure of Spores in Relation to Fern Phylogeny Warren H Wagner (1974) Annals of the Missouri Botanical Garden 61: 332-353 |
 | Plants of the Sandwich Islands collected by James Macrae. Hawaiian Plant Studies 77 H St. John (1978) Phytologia 39: 307-319 |
 | Plants collected on the Sandwich Islands by George Barclay. Hawaiian Plant Studies 89 H St. John (1979) Phytologia 43: 281-286 |
 | Studies in Neotropical Paleobotany. VII. The Lower Miocene Communities of Panama-The La Boca Formation Alan Graham (1989) Annals of the Missouri Botanical Garden 76: 50-66 |
 | The American Paradox in the Distribution of Fern Taxa Above the Rank of Species K U Kramer (1990) Annals of the Missouri Botanical Garden 77: 330-333 |