1. Golden, A. M., J. H. O'Bannon, G. S. Santo, and A. M. Finley. I980. Description and SEM observations of Meloidogyne chitwoodi n. sp. (Meloidogynidae), a .root-knot nematode on potato in lhe Pacific Northwest J. Nemato]. 12:319-327. 2. Hussey, R. S., and K. R. Barker. 1973. A comparison of methods of collecting inocula of Meloidog3'ne spp., including a new technique. Plant Dis. Rep, 57:1025-1...

Reconstructing the origin and evolution of land plants and their algal relatives is a fundamental problem in plant phylogenetics, and is essential for understanding how critical adaptations arose, including the embryo, vascular tissue, seeds, and flowers. Despite advances in molecular systematics, some hypotheses of relationships remain weakly resolved. Inferring deep phylogenies with bouts of ...

the anamorphic fungus genus periconia is worldwide in distribution and causes foliar disease on plants mostly in tropical and subtropical regions. this study presents the description and illustration of p. palmivora discovered on leaves of phoenix dactylifera (palmae/arecaceae) from terai forest region of uttar pradesh, india. the taxonomic determination was based on morphological characteristi...

the systematics, morphology, distribution, biology, economic importance and conservation of the bull shark ( carcharhinus leucas ) in iran are described, the species is illustrated, and a bibliography on this fish in iran is provided.

The broadly defined species of bacterial systematics frequently contain unnamed and unrecognized populations (ecotypes) differing in physiology, genome content, and ecology. Without formal recognition of such ecotypes, it is difficult for microbial ecologists to detect replacement of one ecotype by another in the face of global warming. The ecotype simulation algorithm has proved capable of sup...

We describe a method for computing the biases that systematic signals introduce in parameter estimation using a simple extension of the Fisher matrix formalism. This allows us to calculate the offset of the best fit parameters relative to the fiducial model, in addition to the usual statistical error ellipse. As an application, we study the impact that residual systematics in tomographic weak l...