Mark Allen Wetter

Micromorphological characters and generic delimitation of some New World Senecioneae (Asteraceae)

Some recent systematic investigations have placed great reliance on micromorphological floral features in generic delimitation in the Senecioneae. In order to test the taxonomic value of those features, 31 species of New World “Cacalioid” and “Senecionoid” Senecioneae were examined for five micromorphological characters: 1) configuration and distribution of the stigmatic area on the style branches, 2) stylopodial structure, 3) cellular structure of the carpopodium, 4) configuration of the anther collar, and 5) form of the endothecial cells in the anther. LM or SEM photographs were made for each character for each species. Variation was found to exist with age and geographical range for each of these characters and sometimes between florets on one capitulum. Differences in these five microcharacters were found between the “Cacalioid” and “Senecionoid” genera, but they were no more consistent than the differences in traditional characters employed in generic delimitation.

OTTO KUNTZE, BOTANIST. V. TYPE SPECIMENS OF ASTERACEAE DESCRIBED IN HIS REVISIO GENERUM PLANTARUM

Type specimens of the taxa of Asteraceae described as new by Otto Kuntze in hisRevisio Generum Plantarum Volume I (1891) and Volume III (1898) that are known to be in the herbarium of the New York Botanical Garden (NY) are listed. Types for some of the taxa were not found at NY.

Notes on the asters (Asteraceae) of Edward S. Burgess

Edward Sanford Burgess is best remembered for his taxonomic works on the Biotian asters. In 1928 hisAster herbarium was bequeathed to the New York Botanical Garden. Burgess described 124 taxa ofAster, for 90 of which he failed to designate a type. A list of the BurgessAster types deposited at NY is presented, including 57 lectotypic designations.