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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.

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Presentation on theme: "Rare, Endangered and Threatened plants of Saline Prairies\ by Jason Singhurst May 17, 2013 TORCH Saline Prairies Conference, East Texas Natural History."— Presentation transcript:

1 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

2 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

3 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

4 Saline Prairie Flats and Pimple Mounds

5 Saline Prairie Wet Depressions

6 Saline Prairie Distribution in the West Gulf Costal Plain

7 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 – unpublished ms)

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9 Anderson Saline Prairie

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12 Earth-fruit on cryptogramic soils

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14 Earth-fruit

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16 Wright’s lily

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18 narrowleaf rhombopod

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21 Big Cypress Bayou Prairie a

22 Caddo Lake State Park

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24 Joy Global Prairie

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27 Texas prairie dawn

28 Earth-fruit

29 Texas saltbush

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31 Horton Prairie

32 McLeod Prairie

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35 Warren Prairie

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37 Texas prairie dawn

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39 yellow hedgehyssop

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42 Jack Road Prairie

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44 Texas windmill grass

45 Hitchcock Prairie

46 Houston daisy

47 Prairie Dawn Preserve

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49 Nash Prairie

50 coastal gayfeather

51 Falcon Point Ranch

52 threeflower broomweed

53 San Saba pinweed

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55 Gambil Goose Prairie

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57 pygmy prairie dawn

58 Smith Prairie

59 Cherokee Prairie

60 Midway Prairie

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62 Jason Singhurst Texas Parks & Wildlife


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