Jim McKenney: >Arnold, those are not epiphytes, those are epiliths (have I coined a word? Webster's Unabridged Encyclopedic Dictionary defines "epilithic" as "(as plants) growing on stones" so a noun seems reasonable, whether freshly coined or not. :-) - Barbara Leaf and Stone Barbara L. Weintraub Santa Fe, NM 7000 ft. elevation blweintraub1@earthlink.net