One of the most notable books on eastern trees and shrubs to appear in recent years is Brown and Brown’s authoritative reference work, just off the press.
One of the most notable books on eastern trees and shrubs to appear in recent years is Brown and Brown’s authoritative reference work, just off the press.
This paperback is undoubtedly one of the finest books this writer has seen, which connects chromosomes to evolutionary and genetic phenomena.
Another very readable book by this prolific writer of natural history.
The 22nd Annual Spring Wildflower Pilgrimage will be held in Gatlinburg, Tennessee and surrounding territory May 4, 5, 6, 1972. It is sponsored by the Botany Department of The University of Tennessee, The Great Smoky Mountains National Park, and The Gatlinburg Garden Club.
The largest stand of Chamaecyparis thyoides in the southwest portion of its range was sampled by the quarter method and importance values obtained for the trees and saplings. Shrubs, topographic and edaphic factors were also observed. These findings were compared with those of stands from other parts of the range of white-cedar.
A summer study of the phytoplankton in Lake Drummond is discussed. The lake is located in the center of the Dismal Swamp region of southeastern Virginia. There was little species diversity of the phytoplankton which was composed mainly of diatoms, desmids, and phytoflagellates. The dominant species were Asterionella formosa, Melosira Herzogii, Closteriam gracile, and Staurastrum paradoxum.
Beginning the fall of 1967 the author and his students made collections of vascular plants for a contribution to the Flora of Virginia. The collections are for the Fall Belt counties of Fairfax and Arlington and the nearby cities of Alexandria, Fairfax, Falls Church, and the Town of Vienna. Included in the collections are 321 taxa not reported from these counties by Massey (1961) and six of these taxa are apparently new to the state. Voucher specimens are deposited in the George Mason College herbarium and many duplicates are deposited in the herbarium of the Virginia Polytechnic Institute.
The age designation of Dunkard strata has been a controversial subject for more than 90 years. These rocks have been designated by various authors as Pennsylvanian, Permian, transitional Permo-Carboniferous and partially Permo-Carboniferous: partially Permian. Evidence cited in substantiation of each of these claims has varied from lithological to paleontological to paleobotanical, but the preserved mega-flora as described by Fontaine and White (Rept. PP., 2nd Pa. Geol. Survey) in 1880 forms the basis for most of the age assignments. In some instances, fossilized organisms have apparently been cited as Permian because of their occurrence in Dunkard strata rather than through interpretation of the organismal characteristics. Palynological studies which contrast the flora of the Dunkard with the Virgilian, Gearyan and basal Cimarronian of the Midcontinent area indicate that the Dunkard is no younger than Virgilian which has always been classified as undoubted Pennsylvanian. In general, there seems to be no lithologic, faunal or floral basis for separating Dunkard strata from those that immediately underlie them. The available evidence seems to substantiate a strictly Pennsylvanian age for the group.
A uniquely diverse area in the Blue Ridge province of North Carolina is described. A bog-fen is particularly noteworthy. A catalog of the rich flora, which includes many taxa rarely found in the Carolinas, is provided.
Earl L. Core provided the leadership for the organization of the Southern Appalachian Botanical Club back in 1935 and has served as editor of the journal of the Club through the 36 years of its history. During this period, the circulation increased from less than 200 to approximately 800 and the journal is mailed to botanists in most parts of the world. Now Professor Core, having reached the age of 70, has asked to be relieved of the responsibility of editor-in-chief.