Castanea Archives

The first report of Azolla filiculoides in Virginia provides a key for distinguishing this species from Azolla caroliniana.

The American chestnut (Castanea dentata) was once widespread in eastern North America and an ecologically important hardwood tree of deciduous forest communities prior to its near-eradication by chestnut blight (Cryphonectria parasitica). Remnant populations occur across much of its historical range, especially in older forests of the Appalachians and northeastern U.S. However, broad swaths of the southwestern portion of the species’ historical range remain poorly documented, potentially limiting the representation of genetic variation important for local adaptation in restoration efforts. Ongoing discovery and life-history characterization efforts for remnant C. dentata remains a priority to better understand the distribution and ecological status

We completed a floristic inventory of the James River Park System (JRPS), a ca. 223-hectare (550- acre) multi-unit park along the James River in Richmond, Virginia. The JRPS includes land within the riparian zone along a 13-kilometer (8-mile) stretch of the river that bisects the city, providing two million annual visitors with recreational access to the rapids along the “Falls of the James.” Although the vegetation within the park system is an important attraction for park-goers, information on the flora of the JRPS and this section of the James River corridor is limited. This study updates partial records of the

Peatlands in the mid-Atlantic outer coastal plain region contain obligate hydrophyte species which were harvested and replaced by facultative tree species. The Great Dismal Swamp was drained from the colonial era until 1974, when water levels were partially restored. In September 2013, further restoration consisting of two large weirs followed extensive peat-burning fires. This study evaluated depth-to-water-table and vegetation structure both prior to and following weir operation. Wells were installed and depth-to-water-table was recorded continuously from 2013 to 2015 within six of the 15 forested stands where vegetation species dominance was quantified for tree, shrub, herb, and vine strata. Following

Xyris correlliorum, a rare species endemic to Highlands County, Florida, had not been seen there since 1996. This collection confirms that X. correlliorum is extant. Relevant aspects of this plant are also documented.

This article documents eight species new to Virginia and Maryland.

Neottia bifolia is a small, terrestrial orchid distributed across the southeastern United States and northward up the Atlantic coast into Canada. The genus is well-studied as a model for the evolution of mycoheterotrophy, having both chlorophyllous and putatively achlorophyllous taxa. Despite this, the photosynthetic species, N. bifolia is relatively understudied. We provide results from the sequencing, assembly, and annotation of the complete plastid genome of N. bifolia and examine some evolutionary trends in the genus, using the 10 additional complete Neottia plastid genomes available on GenBank. We find that the plastid genome of N. bifolia is 156,533 base pairs in

Clinopodium talladeganum B.R. Keener & Floden is described as a new species from the Talladega Mountains, Alabama, United States. Morphological differences were compared and analyzed using PCA which supported it as a distinct morphological cluster when compared to the sympatric C. georgianum. An updated key to the genus is provided for the southeastern United States.

We report seven collections of upright chickweed, Moenchia erecta (Caryophyllaceae), from Guilford County, North Carolina. These appear to be the first reports of this species in the state, the first collections in the southeast since 1958, and the first collections east of the Mississippi River since 1993.

Four species of vascular plants are reported here as new to Alabama: Geranium texanum, Gloriosa superba, Prunus yedoensis, and Trifolium echinatum; and one species was rediscovered after 125 years, Momordica charantia. The Prunus yedoensis record represents the first collection of this species from the Southeastern United States. The Gloriosa superba record is the first for this species outside of Florida. Based on habitat, population size, and/or previous collections, all of these taxa are considered to be introduced in the flora of Alabama.

Soldiers Delight Natural Environment Area and Wildlands, a biodiversity hotspot in the Maryland piedmont, conserves an endangered serpentine oak savanna (“barren”) ecosystem with numerous rare, threatened, and endangered species. White-tailed deer became conspicuous during daylight hours circa 1994. In 2008, a helicopter-mounted forward-looking infrared camera (FLIR) survey estimated 36 deer/km2 (93 deer/mi2). A sharpshooter harvest was conducted in 2014, and public hunting was expanded beginning with the 2014–2015 season. This study investigated changes in percent cover, frequency, and importance percentage of herbaceous species using site data collected in 1993 and 1994 when deer were becoming conspicuous, in 2011 when deer

We report the first record of Portulaca amilis in Tennessee. A native of South America, P. amilis is a weedy plant that has been introduced to and naturalized in the southeastern United States. Previously this species has only been reported from the Atlantic Coastal Plain and Piedmont. This suggests a range expansion either west over the Appalachian Mountains from the Carolinas, or north from Georgia, Alabama, or Mississippi into the Ridge and Valley region of east Tennessee.

We present the results of a floristic inventory and qualitative descriptions of the forest communities occurring in Malanaphy Springs State Preserve (MSSP), located in the Paleozoic Plateau of northeastern Iowa. Most of the 25.9-ha preserve is a mature mesic to dry-mesic deciduous forest community occurring on a steep slope adjacent to the Upper Iowa River. The preserve also contains a small floodplain forest as well as a small highly disturbed forest on the upland. We documented 422 plant taxa in our surveys, including 52 non-vascular taxa, 14 seedless vascular taxa, 3 gymnosperms, and 353 angiosperms. Eighty-seven percent of the vascular

Local floras are a basis of biogeography, ecology, evolution, and systematics, and they add value to research sites. Mountain Lake Biological Station is located between 1,150 and 1,319 m elevation in southwestern Virginia on infertile, acidic soils supporting a second-growth forest strongly dominated by Quercus rubra about 150 years old. We sampled vascular vegetation on 352 randomly distributed plots 10m in diameter with 8 subplots of 1 m2 each. The plots contained 175 taxa (including 7 taxa that included 16 lumped species); other fieldwork added 43 species for a total of 227 species in the forest. We excluded disturbed areas