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Chinquapin Archives

The quarterly newsletter of the Southern Appalachian Botanical Society from 1993 - present

Castanea Archives

The complete archives of Castanea from 1936 to 2020.

Occasional Papers in Eastern Botany Archives

An occasional collection of papers published by the Southern Appalachian Botanical Society.

Articles from our Current Issue

Integrating genetics, morphology, and fungal host specificity in conservation studies of a vulnerable, selfing, mycoheterotrophic orchid (Corallorhiza bentleyi Freudenst.)

Mycoheterotrophic plants derive most or all carbon and nutrients from fungal partners and represent poorly understood components of forest biodiversity. Many are rare or endangered yet can be ecological indicators of forest ecosystem function due to fungal host requirements. One such species is the IUCN red-listed (‘vulnerable’), fully mycoheterotrophic orchid, Corallorhiza bentleyi. This recently described species is among the rarest plants in Appalachia, known from five counties in Virginia and West Virginia. The species has a restricted range, small population size, and is self-pollinating. Here, an integrative approach was taken in conservation genetic assessment of C. bentleyi using floral morphometrics,

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Scientific Note: Dictyostelid Cellular Slime Molds Associated with Limestone and Dolomite Glades in Northwest Arkansas

Samples for isolation of dictyostelid cellular slime molds (dictyostelids) were collected from two types of glades (limestone and dolomite) in northwest Arkansas. Glades are non-forest habitats which typically have shallow and usually rather xeric soils. As such, they would not appear to be particularly suitable for dictyostelids. In the present study, only seven species were recovered, and just three of these were recorded from both limestone and dolomite glades. Total densities (clones/gram) were rather low for both types of glades, with 25 clones/gram in dolomite glades and 23 clones/gram in limestone glades.

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Myxomycetes Recorded from the Vicinity of the Mountain Lake Biological Station

Myxomycetes (plasmodial slime molds or myxogastrids) have been collected in the Mountain Lake area of southwestern Virginia since 1890, and several recognized authorities on this group of organisms along with numerous other individuals have visited or worked at the University of Virginia Mountain Lake Biological Station. The collective efforts of all these individuals have generated a considerable body of information on myxomycetes. The purpose of this paper is to provide a comprehensive annotated checklist of all species of myxomycetes reported from the Mountain Lake area. This checklist contains 166 species in 39 genera. This total is approximately 36% of the

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Responses of Florida Scrub Vegetation to Water Additions from a Groundwater Treatment Project and to Hurricane Disturbance

Florida scrub is a fire-maintained shrub vegetation of well-drained, sandy soils; dominant species include several species of Quercus and Serenoa repens. In a remediation project, treated groundwater was distributed through an exfiltration gallery into intact scrub. We established eight permanent line-intercept transects (15 m length) in the site in April 2002, four close to the exfiltration gallery and four more distant from it. We sampled vegetation, <0.5 m and ≥0.5 m, along each transect and measured vegetation height at four points (0, 5, 10, 15 m) annually through 2019. The initial phase of the project operated from October 2002 to

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