]> Worth. [author note: UTEP: Plant species diversity on island mountain masses in sw. U.S.] [collector note: ETEP, MEXU, TEX; collected lichens with W. A. Weber in Texas: FH] Botany Worthington, Richard D. Worthington, Richard D. R. D. Worthington Worth. Worthington Richard D. Worthington Worthington, R. D. 1941