I did a brief Ixquick search on Peter Oberwetter, and found this site http://aggie-horticulture.tamu.edu/syllabi/608/…. html on Southern gardens. In the section on German influence it merely mentions his name (and several others) as important for their introduction of several taxa, including Rhodophiala bifida. Interesting, but I hope to find out more details. Judy Glattstein in New Jersey, where two warm days have geophytes hurtling into bloom - lots of galanthus, Leucojum vernum, Eranthis hiemalis.