Volume 13, Issue 1 (1991)
This issue of Volume 13 was published 20th February, 1991.Front Matter
Articles
The Phytogeography and Ecology of the Coastal Atacama and Peruvian Deserts
P. W. Rundel, M. O. Dillon, B. Palma, H. A. Mooney, S. L. Gulmon, and J. R. Ehleringer
Wood and Stem Anatomy of Convolvulaceae
Sherwin Carlquist and Michael A. Hanson
Steps Toward a Natural System of the Dicotyledons
Gertrud Dahlgren
Distribution and Evolution of Forms and Types of Sieve-element Plastids in the Dicotyledons
Dietmar Behnke
Parallelism, It's Evolutionary Origin and Systematic Significance
K. Kubitzki, P. von Sengbusch, and H. Poppendieck
Germination Patterns in Dicotyledons
H. T. Clifford
Genetic Variation in Endemic and Widespread Plant Species
Pamela S. Soltis and Douglas E. Soltis
An Essay: Geoedaphics and Island Biogeography for Vascular Plants
A. R. Kruckerberg
xChiranthofremontia, An Intergeneric Hybrid of Chiranthodendron Pentadactylon and Fremontodendron 'Pacific Sunset'
James Henrickson