Abstracts
Abstract
Theodore J. Crovello—Plant Taxonomy at the Twelfth Interna-tional Botanical Congress, Leningrad
Christopher H. Haufler and Gerald J. Gastony—Preliminary
Investigations of an Antheridogen System in the Fern Genus
Bommeria
Edward E. Schilling, Jr.—Re-examination of a Numerical Taxonomic Study of Solarium Species and Hybrids
Clifton Keller—Computer Analysis of Selected Indiana Plant
Distribution Patterns to Determine Phytogeographic Units
Theodore J. Crovello—Use of Computers to Determine the Endangered Status of Plant Species