To all Forest Pathers: I am currently looking for Tree of heaven (Ailanthus altissima) seed from all regions of the U.S. I had previously made this same request last year but if was already well into the fall season and consequently i received little seed although many people responded. This time i will provide you with additional time to scout out and locate seed if time permits. There is evidence to suggest that Ailanthus was introduced multiple times into this country on both coasts possibly suggesting that subpopulations of this species may exist. We are currently working with a Verticillium fungus as a potential control of Ailanthus and want to test to see if all subspecies of Ailanthus are equally susceptible to our fungus, assuming that subspecies even exist. Given that all of our seed source is from the Northern Mid-Atlantic, it would be great to get representation from the SE, NW, Lake States, and SW. I currently have ID, CA, WV, VA, NY, and PA seed as well as some from Toronto, Ontario.Please Email me if you have seed or could get seed (100-250 seeds if possible) from those regions listed above. Samples can be sent to the address below. Please dry before sending. Helpful information includes GPS coordinates or closest town name, number of trees seed was collected from (1 or >1), general setting (roadside, forest, etc.). Again, thank you for your help. Regards, Matt Kasson Matthew T. Kasson PhD Student Department of Plant Pathology 301 Buckhout Lab The Pennsylvania State University University Park, PA 16802 814.308.2887 mtk178(a)psu.edu