Coltsfoot

(possible Tussilago farfara) 9/9/06 Hawk Mtn., PA

Yellow flowers appear in Spring before foliage.

This grows at a spot where the path to South Lookout crosses the paved road. It's just before the ticket booth.

Yellow flowers appear in Spring and die off. In Summer, after the flowers have died off, the leaves appear.

Coltsfoot (Tussilago farfara L.) species account here:
http://chestofbooks.com/health/materia-medica-drugs/Textbook-Materia-Medica/Coltsfoot-Herba-Farfarae.html

http://plants.usda.gov/core/profile?symbol=TUFA&photoID=tufa_004_ahp.tif

pictures of leaves:
http://www.ontariowildflower.com/wildflower_waste_alien2.htm#coltsfootal
http://calphotos.berkeley.edu/cgi/img_query?seq_num=156786&