A Revision of Melanconis, Pseudovalsa, Prosthecium, and Titania

Full Title: A Revision of Melanconis, Pseudovalsa, Prosthecium, and Titania (University of Michigan Studies, Scientific Series, Vol. XIV)
Second Hand
Hardcover
Author: Wehmeyer, L.
Published by: University of Michigan Press

1st edition. Book Condition: Fine.
Very scarce. Teal(?) cloth boards with gilt spine titles and UMP blind stamped to top board; very lightly bumped to top and bottom of spine only. Internally very crisp and clean with just a hint of age toning. Light dusting to top edge. Attractive bookplates of 2 previous owners to FEP & FFEP, incl. that of Frederick Archibald Sowter (1899–1972), a British botanist, bryologist, and lichenologist who made contributions to the study of cryptogams, particularly in Leicestershire and Rutland.
Dr. Wehmeyer revised stromatic Pyrenomycetes genus by genus, and, so far as material was obtainable, species by species. This book was a continuation of the author’s-well-known studies on ‘The genus Diaporthe Nitschke and its segregates’.
Of the 60 species that have on occasion been called Melanconis, 25 are here accepted as good, and 27 excluded into seven other genera; material of eight has not been available. As finally presented, the genus comprises species with uniseptate ascospores, both hyaline and brown, appendaged and unappendaged, and with A-conidia, both hyaline and brown and from 0- to multiseptate.
Similarly, of the 37 species that have been placed in Pseudovalsa three are accepted as good, and the others excluded; seven with appendaged ascospores are transferred to Prosthecium, and one with one-spored asci to Titania.
Calospora of Saccardo’s usage is suppressed, and its 40 species otherwise distributed, the type species to Prosthecium.