Edwards, D.S. (1980). "Evidence for the sporophytic status of the Lower Devonian plant Rhynia gwynne-vaughanii Kidston and Lang". Review of Palaeobotany and Palynology. 29: 177–188. Bibcode:1980RPaPa..29..177E. doi:10.1016/0034-6667(80)90057-3.
Edwards, D.S. (1986). "Aglaophyton major, a non-vascular land-plant from the Devonian Rhynie chert". Botanical Journal of the Linnean Society. 93 (2): 173–204. doi:10.1111/j.1095-8339.1986.tb01020.x.
Bateman, R.M.; Crane, P.R.; Dimichele, W.A.; Kenrick, P.R.; Rowe, N.P.; Speck, T.; Stein, W.E. (1998). "Early Evolution of Land Plants: Phylogeny, Physiology, and Ecology of the Primary Terrestrial Radiation". Annual Review of Ecology and Systematics. 29 (1): 263–292. doi:10.1146/annurev.ecolsys.29.1.263.
Edwards, D.S. (1980). "Evidence for the sporophyte status of the Lower Devonian plant Rhynia gwynne-vaughnii Kidston and Lang". Review of Palaeobotany and Palynology. 29: 177–188. Bibcode:1980RPaPa..29..177E. doi:10.1016/0034-6667(80)90057-3.
Remy, W.; Hass, H. (1996). "New information on gametophytes and sporophytes of Aglaophyton major and inferences about possible environmental adaptations". Review of Palaeobotany and Palynology. 90 (3–4): 175–193. Bibcode:1996RPaPa..90..175R. doi:10.1016/0034-6667(95)00082-8.
Holloway, J.E. (1939). "The gametophyte, embryo and young rhizome of Psilotum triquetrum Schwarz". Annals of Botany. 3 (2): 313–336. doi:10.1093/oxfordjournals.aob.a085063.
Edwards, David S. (1986). "Aglaophyton major, a non-vascular land-plant from the Devonian Rhynie Chert". Botanical Journal of the Linnean Society. 93 (2): 173–204. doi:10.1111/j.1095-8339.1986.tb01020.x.
Edwards, D.S. (1980). "Evidence for the sporophytic status of the Lower Devonian plant Rhynia gwynne-vaughanii Kidston and Lang". Review of Palaeobotany and Palynology. 29: 177–188. Bibcode:1980RPaPa..29..177E. doi:10.1016/0034-6667(80)90057-3.
Edwards, D.S. (1980). "Evidence for the sporophyte status of the Lower Devonian plant Rhynia gwynne-vaughnii Kidston and Lang". Review of Palaeobotany and Palynology. 29: 177–188. Bibcode:1980RPaPa..29..177E. doi:10.1016/0034-6667(80)90057-3.
Remy, W.; Hass, H. (1996). "New information on gametophytes and sporophytes of Aglaophyton major and inferences about possible environmental adaptations". Review of Palaeobotany and Palynology. 90 (3–4): 175–193. Bibcode:1996RPaPa..90..175R. doi:10.1016/0034-6667(95)00082-8.