the Celastraceae, Polygonaceae, Myrsinaceae, and Rutaceae by Lundell. He contributed the treatments of the Rutaceae, Celastraceae, Theophrastaceae, and Myrsinaceae for the "Flora of Panama" (to be published by the Missouri Botanical Garden) and initiated the preparation of the Flora of Texas, spending parts of the years 1940-42 in field studies in Texas.
McVaugh has been engaged in a study of the genus Prunus in North America. Field investigations were made in Texas and New Mexico in 1947, in southeastern United States in 1948, and in Michoacán, Jalisco, and other states in Mexico in 1949. He is also engaged in monographic studies of the Campanulaceae and Myrtaceae and has prepared the treatments of the Rosaceae for "Flora of Panama," the Myrtaceae for "Flora of Peru," and the Campanulaceae for Arizona Flora and for Flora of Texas. With Joseph H. Pyron he published the Ferns of Georgia. Studies have been made by him concerning early botanical explorations in North America.
Investigations of the bryophytes have been made for many areas in North America. Frances Thorpe reported concerning the bryophytes collected by Erlanson and Koelz in Greenland. Steere published a number of papers on the bryophytes of the Hudson Bay region and the Canadian eastern Arctic. In 1948 he headed a party supported by the Botanical Gardens of the University and the Navy to Great Bear Lake in the Canadian western Arctic. He studied the distribution pattern of mosses in Alaska in 1949, and he has published concerning species from Little Diomede Island in Bering Strait. Results of investigations concerning the phylogeny and distribution of mosses have been reported in papers concerning the Cenozoic and Mesozoic bryophytes of North America and Pleistocene mosses of Louisiana and Iowa. Steere also prepared the treatments for the families Calymperaceae and Erpodiaceae and the genera Didymodon, Barbula, and Tortula for Grout's Moss Flora of North America.
W. R. Taylor engaged in investigations concerning the taxonomy, morphology, and reproduction of algae. The results of his studies on the Atlantic coast have been published in the Marine Algae of the Northeastern Coast of North America. Other investigations have included studies concerning the marine algae of the tropical Atlantic Ocean, the Straits of Magellan, the coasts of Peru and Chile, the Marshall Islands, Java, and the Philippines. Taylor has also published studies of fresh-water algae of Isle Royale, Michigan, Newfoundland, Guatemala, and Colombia. He was a member of two Hancock expeditions, in 1934 to the Galapagos Islands and the Pacific coasts of Mexico and Central America, and in 1939 to the Caribbean Sea and the Pacific coasts of Mexico and Central America. In 1946 he was in the Marshall Islands engaged in botanical studies in connection with the "Crossroads" atomic bomb project of the U. S. Navy on Bikini. The results have been published in Plants of Bikini and Other Northern Marshall Islands. In 1949 he was on sabbatical leave engaged in a study of the marine algae of Bermuda.
The emphasis in the investigations of A. H. Smith has been on the large group of fleshy fungi, the Agaricaceae. His monograph North American Species of Mycena appeared in 1947 and his general treatment of fleshy fungi, Mushrooms in Their Natural Habitats, in 1949. The genera Cantherellus, Collybia, Cortinarius, Galerina, Kuehneromyces, Leucopaxillus, Lepiota, Lyophyllum, Melanoleuca, Nematoloma, Psathyrella, Pseudocoprinus, Rhodopaxillus, Rhodophyllus, Tricholoma, and Xeromphalina have received
