Addendum: Juncus ceariensis Coville (Juncaceae) in Virginia Peat Bogs
Addendum: <em>Juncus ceariensis</em> Coville (Juncaceae) in Virginia Peat Bogs
Addendum: <em>Juncus ceariensis</em> Coville (Juncaceae) in Virginia Peat Bogs
Scientific Note: <em>Cypripedium candidum</em> and Six Other Additions to the Known Flora of Maryland
ABSTRACT <em>Senecio millefolium</em> T. & G. was added to the Virginia flora in 1944 by Lloyd G. K. Carr on the basis of a single specimen collected in the Cedars of Lee County. The Carr specimen was small and depauperate, and the species was not identified subsequently from this area. In 1971, <em>S. millefolium</em> was omitted from the Virginia flora and since that time has been considered a Blue Ridge endemic found only in North Carolina, South Carolina, and Georgia. In 1990, collections of <em>Senecio millefolium</em> were made in the Cedars along with <em>Senecio</em> ✕<em>memmingeri</em> (<em>S. anonymus</em> ✕ <em>S. millefolium</em>). Their identification readmits <em>S. millefolium</em> to the Virginia flora, expands its range to the Ridge and Valley Physiographic Province, and adds limestone to its edaphic tolerance. The species remains threatened even with the addition of these new populations.. [sic]
ABSTRACT Hickman County, one of four westernmost counties of Kentucky bordered by the Mississippi River, consists of 308,750 hectares of which 79% have been cultivated. Hickman County is part of the Jackson Formation which is overlain by loess and alluvium. Obion Creek and Bayou de Chien Creek are primary drainage systems. More than 40 habitats, many of which are wetlands, were systematically collected from March 1987 to November 1988. These collections produced a three-fold increase in the number of species, subspecies and varieties known to occur in Hickman County. The result is an annotated list of 889 taxa representing 435 genera and 126 families.
Book Review: Catalogue of the Flora of Missouri
ABSTRACT One hundred and sixty-two moss taxa (154 species and 8 varieties) are reported for Rowan County, Kentucky. <em>Barbula reflexa</em>, <em>Bryum cyclophyllum</em>, <em>B. gemmiparum</em>, <em>Ditrichum rhynchostegium</em>, <em>Ephemerum cohaerens</em>, and <em>Fabronia ciliaris</em> are newly reported for Kentucky. Other species of interest include <em>Brothera leana</em>, <em>Fissidens exilis</em>, <em>Gumnostomum angustifolium</em>, and <em>Heterocladium macounii</em>.
Book Review: Poisonous and Medicinal Plants
ABSTRACT Marshall Forest is a virgin oak-hickory-pine forest in northwest Georgia that is an assemblage of chestnut oak, pine-oak, and mixed forest communities. A resurvey of permanent plots established 29 years ago within the mixed forest community of the forest indicates that basal area has increased by about 50 percent, at the same time mean stem density has decreased about 27 percent. Decreased species importance is noted for Pinus echinata, Liriodendron tulipifera, and Carya ovata. An increased importance is noted for Acer rubrum and Quercus prinus.
ABSTRACT The community ecology of a 0.49 ha wetland was studied at a site that was highly disrupted by past limestone mining. The wetland occurs in a potentially stressful environment for many plants because only a thin layer of soil covers bedrock and moisture fluctuations range from inundation to desiccation. In the wetland, 86.4% of the species are native (including the 11 most frequent species). Variation in species frequency across the wetland is controlled by soil depth and soil moisture. Of the native species occurring in the wetland, 80% also occur in two nearby nature preserves; some of these species are associated with ruderal habitats.