1. The Pink Wild Bean (Strophostyles umbellata) Julie E. Moore Nature Reserve

2. Pink Wild Bean

3. 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

4. Niche 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 Habitat 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

5. Characteristics Aerial Views of the Wild Pink Bean Locations In the Nature Reserve

6. Aerial Views of the Wild Pink Bean Locations In the Nature Reserve

7. 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

8. RESULTS: Dispersal Patterns of the Pink Wild Bean Number in plotsObserved Freq.Observed Prob.Poisson Prob. 0130.130.368 120.020.368 270.070.184 320.020.061 410.010.015 510.010.003 620.020.001

9. RESULTS: Dispersal Patterns of the Pink Wild Bean # of individuals / Plot Poisson probability values Mean of 1.0

10. 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

11. 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.