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The Pink Wild Bean ( Strophostyles umbellata ) Julie E. Moore Nature Reserve. Pink Wild Bean. Characteristics. http://plants.usda.gov/cgi_bin/plant_profile.cgi?symbol=STUM2 Perennial vine with circular petals divided into 3 leaflets
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The Pink Wild Bean (Strophostyles umbellata) Julie E. Moore Nature Reserve
Characteristics http://plants.usda.gov/cgi_bin/plant_profile.cgi?symbol=STUM2 • Perennial vine with circular petals divided into 3 leaflets • Flowers are irregular in shape and are up to 1.5cm wide (0.6 inches) • Blooms first appear in early summer and continue into mid fall
Niche Habitat • Fields and open woods with sandy or rocky soil • Found typically in waist-high grass and brush near and around wooded areas, not typically found in open areas of fields in constant sunlight • Most of eastern United States: Alabama, Arkansas, Florida, Georgia, Illinois, Indiana, Kentucky, Louisiana, Maryland, Mississippi, Missouri, North Carolina, Ohio, Pennsylvania, South Carolina, Tennessee, East Texas, & Virginia
Aerial Views of the Wild Pink Bean Locations In the Nature Reserve Characteristics
Aerial Views of the Wild Pink Bean Locations In the Nature Reserve
Methods of Study • The Pink Wild Bean was chosen due to its visibility and unique characteristics • A 1-meter radius circle was used as the area of study • A total of 30 areas were chosen haphazardly from the Jewel E. Moore Nature Preserve • Care had to be taken to insure all plants in the study area were found due to there ground dwelling nature
RESULTS:Dispersal Patterns of the Pink Wild Bean Poisson probability values # of individuals / Plot Mean of 1.0
CONCLUSIONS: • From the analysis of the “number of indiv. per plot vs. Poisson prob., it can be seen that the data most closely represents a random or a contagious distribution but led to conclusion with just visual data, to clarify statistically, a chi-square test was done • The Variance to Mean ratio resulted in a chi square value of 120.06 with 29 degrees of freedom • From Figure 4C.6, our data showed that our species fell well within the range of contagious
Conclusions cont. • The clumped distribution of Pink Wild Bean could have resulted from competition of other species of vine as well as overgrowth and low sunlight regions of the prairie.