By Bonnie B. Amos, Frederick R. Gehlbach
As a result of its huge measurement, topographic variety, and southcentral place in North the US, Texas has a plant life of a few 5,480 species in 10 ordinary areas and not less than seventy seven significant plant institutions. imperative within the state's biogeographical development is the Edwards Plateau, a strongly dissected tableland, highly bordered at the east and south by way of the abrupt Balcones Escarpment.
This quantity brings jointly 8 reviews of the Plateau initially provided at a symposium subsidized by way of the Southwestern organization of Naturalists. the purpose is to supply an creation to the vegetational panorama, together with consultant pictures, particular examine concerning the background of plants styles, and quantitative details on present constitution and succession.
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Additional info for Edwards Plateau Vegetation: Plant Ecological Studies in Central Texas
Sample text
TexanaUlmus americanaQ. U. crassifoliaUlmus crassifoliaSophora secundiflora Table 2. Bouteloua curtipendulaBothriochloa saccharoidesBouteloua curtipendulaB. B. Muhlenbergia reverchoniiEriochloa sericeaBuchloe dactyloidesQuercus fusiformisHilaria belangeriErioneuron pilosumQ. Hilaria belangeriSchizachyrium scopariumProsopis glandulosaH. Stipa leucotrichaSchizachyrium scopariumProsopis glandulosaSporobolus asperStipa leucotrichaSporobolus cryptandrus Slope communities on dry southern and western exposures are primarily evergreen and dominated by Ashe juniper, often in nearly pure stands called cedar breaks.
14), I employed the hypothesis of no difference in these two broad classes of vegetation in testing their frequencies in each county. Results and Discussion Historical Observations The term Edwards Plateau does not appear in any pre-1860 description of Texas, but there are other terms bearing on the region and its relationships. Rankin (1850), for instance, wrote "... " Her word is obviously a corruption of the Spanish cordillera, meaning mountain range. Its application to the escarpment of the Plateau suggests the Mexican mountains in looking for relationships.
In the central and western portions Lacey oak (Quercus glaucoides) is important, while scalybark oak (Quercus sinuata) is most important in the east. These vegetation-types often contain a distinct understory layer composed of yaupon (Ilex vomitoria), American beautyberry (Callicarpa americana), hoptree (Ptelea trifoliata), Mexican buckeye (Ungnadia speciosa), deciduous holly (Ilex decidua), and roughleaf dogwood (Cornus drummondii). ) Page 9 are species with eastern affinities that are locally important on mesic slopes and floodplains; Texas madrone (Arbutus xalapensis) and Mexican pinyon (Pinus cembroides) are similar southwestern/Mexican species.