Egan, R/ Harms, R/ Widhelm, T 2005: Studies on the lichen Parmotrema rigidum s. lat. from North and South America. - The Bryologist108(3): 402-405. [RLL List # 200 / Rec.# 27269] Keywords: PARMOTREMA/ SOUTHEAST UNITED STATES/ new taxa
Abstract: 4 fig. [New: Parmotrema subrigidum Egan sp. nov. (Florida and southeastern U.S. from Texas to Delaware).]