Taxon, Vol. 18, No. 2, Smithsonian Summer Institute in Systematics 1968, Part 2 (Apr., 1969), pp. 204-212 (9 pages) In response to skeptics who feel that the contribution of paleobotany to phylogeny ...

Research on plant cell death has grown considerably in the past few years, owing to the importance of cell death for plant development and defense. Just as animal cells engage several mechanisms ...