1. Department of Biology University of Louisiana at Lafayette Lafayette Louisiana 70504‐3602 USA
2. Smithsonian Marine Station at Fort Pierce Fort Pierce Florida 34949‐3140 USA
3. Division of Mathematics, Science, and Engineering Hartnell College Salinas California 93901 USA
4. Biology Department and Herbarium University of North Carolina at Chapel Hill Coker Hall CB 3280 Chapel Hill North Carolina 27599‐3280 USA