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ILLUSTRATED FLORA OF EAST TEXAS - Brit - Botanical Research ...

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23 Arizona/New Mexico Mountains<br />

23a Chihuahuan Desert Slopes<br />

23b Montane Woodlands<br />

24 Chihuahuan Deserts<br />

24a Chihuahuan Basins and Playas<br />

24b Chihuahuan Desert Grasslands<br />

24c Low Mountains and Bajadas<br />

24d Chihuahuan Montane Woodlands<br />

24e Stockton Plateau<br />

25 High Plains<br />

25b Rolling Sand Plains<br />

25e Canadian/Cimarron High Plains<br />

25i Llano Estacado<br />

25j Shinnery Sands<br />

25k Arid Llano Estacado<br />

25b 26a<br />

25b<br />

25e<br />

26 Southwestern Tablelands<br />

26a Canadian/Cimarron Breaks<br />

26b Flat Tablelands and Valleys<br />

26c Caprock Canyons, Badlands, and Breaks<br />

26d Semiarid Canadian Breaks<br />

27 Central Great Plains<br />

27h Red Prairie<br />

27i Broken Red Plains<br />

27j Limestone Plains<br />

29 Cross Timbers<br />

29b Eastern Cross Timbers<br />

29c Western Cross Timbers<br />

29d Grand Prairie<br />

29e Limestone Cut Plain<br />

29f Carbonate Cross Timbers<br />

26a<br />

GEOGRAPHIC AREA <strong>OF</strong> <strong>EAST</strong> <strong>TEXAS</strong>/INTRODUCTION 7<br />

30 Edwards Plateau<br />

30a Edwards Plateau Woodland<br />

30b Llano Uplift<br />

30c Balcones Canyonlands<br />

30d Semiarid Edwards Plateau<br />

31 Southern Texas Plains<br />

31a Northern Nueces Alluvial Plains<br />

31b Semiarid Edwards Bajada<br />

31c Texas-Tamaulipan Thornscrub<br />

31d Rio Grande Floodplain and Terraces<br />

26d<br />

30 0 60 120 mi<br />

26a<br />

Amarillo 27h<br />

60 0 120 240 km<br />

26c<br />

27h<br />

Albers equal area projection<br />

25i<br />

26b<br />

25j<br />

27h<br />

35g<br />

Lubbock<br />

25j<br />

26b<br />

26c<br />

35g<br />

Wichita 29b<br />

35a 35c<br />

Falls<br />

27i 29d Sherman 33d<br />

35a<br />

Denton 32a 33d<br />

35c<br />

33f 35b<br />

25j<br />

24c<br />

23a<br />

Midland<br />

El Paso 24a 23b<br />

Odessa<br />

24a 24b 25k<br />

24d Pecos 25j<br />

24c<br />

24d<br />

24a<br />

24d<br />

24e<br />

24d<br />

24d<br />

24d 24e<br />

24b 24d<br />

24b<br />

24c<br />

24d 24b<br />

24c<br />

32 Texas Blackland Prairies<br />

26b<br />

27h<br />

26b Abilene<br />

26c 30d<br />

27j<br />

San Angelo<br />

30d<br />

30a<br />

24a<br />

31b<br />

Del Rio<br />

31a<br />

31d<br />

Dallas 33f 35a 35b<br />

29f Fort<br />

35b<br />

Worth<br />

33a<br />

32c<br />

Tyler<br />

29b<br />

29c<br />

35b<br />

35a<br />

33f 35b Nacogdoches<br />

Waco<br />

29e 32c<br />

33b 35b 35e<br />

Temple<br />

33f<br />

33C<br />

35b<br />

35e<br />

30b 32a<br />

35f<br />

35f 35b<br />

Austin 33b<br />

35f 35b<br />

34a<br />

32c 33e 32b<br />

32c<br />

34a<br />

30c<br />

33f 34a<br />

Houston 34g<br />

San 32b 34a<br />

Antonio<br />

Galveston<br />

34a<br />

34c 34c<br />

33b Victoria 34a 34h<br />

34a<br />

32a Northern Blackland Prairie<br />

32b Southern Blackland/Fayette Prairie<br />

32c Floodplains and Low Terraces<br />

31c<br />

34b<br />

34c<br />

34h<br />

34h<br />

33 East Central Texas Plains<br />

33a Northern Post Oak Savanna<br />

33b Southern Post Oak Savanna<br />

33c San Antonio Prairie<br />

31d<br />

Laredo<br />

34b<br />

Corpus Christi<br />

34i<br />

33d Northern Prairie Outliers<br />

33e Bastrop Lost Pines<br />

34d GULF <strong>OF</strong> MEXICO<br />

33f Floodplains and Low Terraces<br />

34 Western Gulf Coastal Plain<br />

34a Northern Humid Gulf Coastal Prairies<br />

34b Southern Subhumid Gulf Coastal Prairies<br />

34c Floodplains and Low Terraces<br />

31d<br />

34e<br />

35 South Central Plains<br />

34f 34i<br />

Brownsville<br />

34d Coastal Sand Plain<br />

35a Tertiary Uplands<br />

34e Lower Rio Grande Valley<br />

34f Lower Rio Grande Alluvial Floodplain<br />

34g Texas-Louisiana Coastal Marshes<br />

35b Floodplains and Low Terraces<br />

35c Pleistocene Fluvial Terraces<br />

35e Southern Tertiary Uplands<br />

Level III ecoregion<br />

Level IV ecoregion<br />

34h Mid-Coast Barrier Islands and Coastal Marshes 35f Flatwoods<br />

County boundary<br />

34i Laguna Madre Barrier Islands and Coastal Marshes 35g Red River Bottomlands<br />

State boundary<br />

FIG.5/MAP <strong>OF</strong> THE ECOREGIONS <strong>OF</strong> <strong>TEXAS</strong> (GRIFFITH ET AL. 2004). USED WITH PERMISSION <strong>OF</strong> THE ENVIRONMENTAL PROTECTION AGENCY.<br />

33c

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