Rare, Endangered and Threatened plants of Saline Prairies\ by Jason Singhurst May 17, 2013 TORCH Saline Prairies Conference, East Texas Natural History.

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Rare, Endangered and Threatened plants of Saline Prairies\ by Jason Singhurst May 17, 2013 TORCH Saline Prairies Conference, East Texas Natural History Collection, Hawkins, Texas

Why are Arkansas, Louisiana, and Texas scientists interested in saline prairies? 1. Globally rare plants, endemics, and peripherals plant species 2. Plant communities are globally rare

Saline Prairies Physical Setting, Geology, and Soils 1.Fluvial terraces adjacent to active floodplains 2.Soils formed on loamy late Pleistocene sediments 3.In Louisiana and Texas the soil series include Bonn, Brimstone and Lafe Saline Prairie General Appearance 1.Short to medium in height grass canopy 2.Density of grasses is variable but usually sparse 3.Broad flats and wet depressions 4.Slicks that are devoid of vegetation (natric horizon that is characterized by high levels of exchangeable Na – often associated with arid or semi-arid environments) 5.Cryptogramic crust composed of algae, mosses, and lichens

Saline Prairie Flats and Pimple Mounds

Saline Prairie Wet Depressions

Saline Prairie Distribution in the West Gulf Costal Plain

Saline Prairies Plant Communities Bottomland Prairies Plantago pusilla - Sporobolus pyramidatus - Phemeranthus parviflorus –Cleomella angustifolia (Sedum nuttallianum) Association (Keith et al.2004) Silveus Dropseed Prairies Plantago hybrida - Sporobolus pyramindatus - Iva angustifolia - Phemeranthus parviflorus (Hymenoxys perpygmaea ) Association (Mink et al. 2012) Coastal Prairies Sporobolus pyramidatus – Spergularia echinosperma – Iva angustifolia – Hymenoxys texana – (Thurovia triflora) (Singhurst et al. – unpublished ms)

Anderson Saline Prairie

Earth-fruit on cryptogramic soils

Earth-fruit

Wright’s lily

narrowleaf rhombopod

Big Cypress Bayou Prairie a

Caddo Lake State Park

Joy Global Prairie

Texas prairie dawn

Earth-fruit

Texas saltbush

Horton Prairie

McLeod Prairie

Warren Prairie

Texas prairie dawn

yellow hedgehyssop

Jack Road Prairie

Texas windmill grass

Hitchcock Prairie

Houston daisy

Prairie Dawn Preserve

Nash Prairie

coastal gayfeather

Falcon Point Ranch

threeflower broomweed

San Saba pinweed

Gambil Goose Prairie

pygmy prairie dawn

Smith Prairie

Cherokee Prairie

Midway Prairie

Jason Singhurst Texas Parks & Wildlife

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