Hi borborsmart 508,
Please explore following website for general information on Echinecea specis for their medical properties to treat various illness. You could use this info as introduction for background research.
http://www.cdfin.iastate.edu/botanical/echinacea.htm
Its natural habitat in Echinacea is common throughout the North American plains and woodlands, and is native to Ohio and Iowa south to Louisiana and Georgia. The plant is also being cultivated in parts of Europe.
Following method you could use for extraction proceedure. This experiment needs sterile filter discs, agar plates and bacterial culture to do the essay as given below. You don't need microscope for this project.
Ethnobotany is the study of the relationship between plants and cultures. In this project, you will attempt to identify plants with medicinal properties and possibly isolate the active ingredient in these plants. After doing some background research to find plant species that might be promising, you will perform extractions on plant tissues and use a bioassay to determine if these extracts have antibacterial or antifungal activity.
The extraction procedure is fairly simple: a specified mass of the chosen plant material is mixed with a specified volume of water, crushed and boiled (or not boiled) for 5 minutes, then filtered to remove plant debris. This extract can then be placed on sterile filter paper discs which are laid on top of an agar plate that has been spread with bacteria or fungus. If the extract has antibacterial (or antifungal) properties, a “zone of inhibition� will appear as a halo around the disc, indicating that bacteria (or fungi) did not grow in the presence of the extract. The width of the zone of inhibition can be used as a rough measurement of how effective the extract is at inhibiting microbial growth.
This help you intially how to set up the experiment and if you need further assistance please repost with specifics of it.