Robert T. Clausen
1911
Books
- Symposium on Botanical exploration in New York State
- Variations in the chemical composition and insectidical properties of the yam bean (Pachyrrhizus)
- Woodsia oregana on Sentinel Butte, North Dakota
- Sagittaria Edwardsiana, a new species from the New Jersey pine barrens
- Variations of Ophioglossum vulgatum
- A botanical study of the yam beans (Pachyrrhizus)
- Northeastern limits of the known range of Rhus toxicodendren
- Biennial species of Sedum of the Sierra Madre Occidental and Mexican Plateau
- Selaginella, subgenus Euselaginella in the Southeastern United States
- The taxonomy and crytology of the subgenus Gormania of Sedum
- Contributions to the flora of New Jersey
- On the status of Botrychium dissectum var. oneidense
- Variation of species of Sedum of the Mexican Cordilleran Plateau
- Plants of central Pennsylvania
- Nomenclatural changes and innovations in the Crassulaceae
- The section Sedastrum of Sedum
- Studies in the Crassulaceae
- Studies in the Gentianaceae
- Hybrids of the eastern North American subspecies of Lycopodium complanatum and L. tristachyum
- Najas arguta in Central America and its Relationship to N. wrightiana
- Some plants of New York
- Studies in the Ophioglossaceae
- Carex aestivalis and Carex lurida var. gracilis on the glaciated Allegheny plateau
- Ophioglossum petiolatum Hooker
- A new species of Najas from the Hudson River
- A monograph of the Ophioglossaceae
- Sedum
Author data: Open Library