BioStor
 | Structure of Spores in Relation to Fern Phylogeny Warren H Wagner (1974) Annals of the Missouri Botanical Garden 61: 332-353 |
 | Studies in Neotropical Paleobotany. II. The Miocene Communities of Veracruz, Mexico Alan Graham (1976) Annals of the Missouri Botanical Garden 63: 787-842 |
 | Studies in the Eupatorieae (Asteraceae) CCXXIII. New combinations and new species of Central and South America R M #king and H Robinson (1988) Phytologia 65: 62-72 |
 | Augustus Fendler's Venezuelan Collections of Ferns and Fern Allies Alan R Smith and Carol A Todzia (1989) Annals of the Missouri Botanical Garden 76: 330-349 |
 | 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 |