Strongly sloping "Browne's Dam Northeast Glade," June 1992

Seasonally moist area with much Rhynchospora colorata (lesser white-topped sedge). "Lady Tresses South Glade" June 3, 2006

View with much Amsonia ciliata var. tenuifolia (narrowleaf blue star); less conspicuous yellow-flowered plants are Hypoxis hirsuta (yellow star-grass) and Onosmodium decipiens (deceptive marbleseed). "South Goat Glade," April 15, 2005

Glade in summer, with much Rudbeckia triloba var. pinnatiloba (pinnate-lobed brown-eyed Susan). Erigeron strigosus var. dolomiticola (Cahaba daisy fleabane, with white flowers) less abundant. "Plantain Glade," July 17, 1993.

Ketona Dolomite glade in spring. Woody dominant, Juniperus virginiana (eastern redcedar) visible in background. Herbaceous aspect dominant is Amsonia ciliata var. tenuifolia (narrow-leaved blue star); yellow flower at lower left is Castilleja kraliana (Cahaba paintbrush); patch of white flowers middle left is Minuartia patula (glade sandwort). "Northeast Starblaze Glade," April 26, 1993. Ketona Dolomite glade in summer, with much Rudbeckia triloba var. pinnatiloba (pinnate-lobed brown-eyed Susan). "Plantain Glade," July 17, 1993. View of largest Ketona Glade, "South Goat Glade," with Onosmodium decipiens (deceptive marbleseed) in flower at right foreground. April 26, 2007 Strongly sloping glade with Astrolepis integerrima (star-scale cloak fern, disjunct from Texas)  in foreground. "Fern Glade," August 27, 2008 View with masses of Marshallia mohrii (Mohr's Barbara's-buttons); at right is a clump of [summer-flowering] Silphium glutinosum [sticky rosinweed]. One of the minority of glades not protected by the Nature Conservancy of Alabama, "East Pratt Creek Glade," June 3, 2006.

We collected a sample of topsoil from an open area on each of four glades and submitted them through the Cooperative Extension Service of Georgia (University of Georgia/Georgia Department of Agriculture) to the state Soil Testing Laboratory for routine analysis. These tests indicated that the soil derived from the weathering of Ketona Dolomite is very high in magnesium and calcium but low in phosphorus and potassium. The soil reaction is mildly alkaline, with a pH range from 7.4 to 7.6.

The climate of central Alabama is characterized by mild winters, with temperatures often falling below freezing at night but seldom remaining so all day, and warm, humid summers. The physical environment of the Ketona Glades, given its lower latitude, is presumably somewhat milder in winter and warmer in summer than the regions to the north in which glades occur.


The flora of the Ketona Glades is distinguished from those found in other glade, barren, or prairie habitats by containing eight endemic taxa, plus a number of species that are otherwise rare or unknown from glade habitats, along with many taxa well known to frequent such places.

The dominant grass species of the open glade is Schizachyrium scoparium (Michx.) Nash, but it usually does not achieve great density and is an aspect dominant only late in fall and winter, when the strong forb component is muted. Other characteristic plants of this community include Agalinis purpurea (L.) Pennell, A. tenuifolia (Vahl) Raf., Allium canadense L. var. mobilense (Regel) M. Ownbey

Schizachyrium scoparium (DeKalb County, Georgia)

Agalinis purpurea

Agalinis tenuifolia (DeKalb County, Georgia)

Allium canadense var. mobilense

Amsonia ciliata var. tenuifolia (Raf.) Woods., Andropogon gerardii Vitman, A. virginicus L., Asclepias viridiflora Raf., Callirhoë alcaeoides (Michx.) Gray, Castilleja Mutis ex L. f. sp. nov.,

Amsonia ciliata var. tenuifolia

Andropogon gerardii (White County, Georgia)

Andropogon virginicus (DeKalb County, Georgia)

Asclepias viridiflora

Cnidoscolus stimulosus (Michx.) Engelm. & Gray, Fimbristylis puberula (Michx.) Vahl, Gaura filipes Spach, Hedyotis nigricans (Lam.) Fosb., Hypoxis hirsuta (L.) Coville, Isoëtes butleri Engelm., Leavenworthia exigua Rollins var. lutea Rollins, L. uniflora (Michx.) Britt., Leptopus phyllanthoides, Liatris Gaertn. ex Schreb. sp. nov., L. cylindracea Michx., Linum sulcatum Riddell var. sulcatum, Lobelia spicata Lam.

Cnidoscolus stimulosus (DeKalb County, Georgia)

Fimbristylis puberula

Hedyotis nigricans

Hypoxis hirsuta

Lobelia spicata

Marshallia mohrii, Mecardonia acuminata (Walt.) Small var. acuminata, Minuartia patula (Michx.) Mattf., Mirabilis albida (Walt.) Heimerl, Nothoscordum bivalve (L.) Britt., Onosmodium Michx. sp. nov., Oxalis priceae Small ssp. priceae, Paronychia virginica Spreng., Penstemon tenuiflorus Pennell, Polygala boykinii Nutt.,

Mecardonia acuminata var. acuminata (DeKalb County, Georgia)

Minuartia patula

Nothoscordum bivalve

Oxalis priceae ssp. priceae

P. grandiflora Walt., Rhynchospora colorata (L.) H. Pfeiffer, Rudbeckia triloba L. var. pinnatiloba Torr. & Gray, Ruellia humilis Nutt., Sabal minor, Salvia azurea Lam., Schoenolirion croceum (Michx.) Wood, Scutellaria parvula Michx., Silphium L. sp. nov.,

Polygala grandiflora

Ruellia humilis

Salvia azurea

Scutellaria parvula

Solidago ulmifolia Muhl. ex Willd., Spigelia gentianoides Chapman in A. DC. var. alabamensis K. Gould, Spiranthes magnicamporum Sheviak, Sporobolus junceus (Michx.) Kunth, Tetragonotheca helianthoides L., and Yucca filamentosa L. Also frequent is a moss, Pleurochaete squarrosa (Brid.) Lindb. Amsonia ciliata var. tenuifolia is often abundant and dense enough to be an aspect dominant in spring, and Rudbeckia triloba var. pinnatiloba is occasionally an aspect dominant in summer.

Solidago ulmifolia

Sporobolus junceus

Tetragonotheca helianthoides

Yucca filamentosa




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