1. University of Michigan Herbarium and Department of Ecology and Evolutionary Biology,; Varsity Drive, Ann Arbor, Michigan 48108-2228, 3600 U.S.A.,
2. Real Jardín Botánico,; CSIC, Plaza de Murillo 2, Madrid, 28014 Spain;,
3. Harvard University Herbaria,; 22 Divinity Ave, Cambridge, Massachusetts 02138, U.S.A.
4. Forest Products Laboratory,; One Gifford Pinchot Drive, Madison, Wisconsin 53726-2398, U.S.A.
5. Universidad Central de Venezuela, Facultad de Agronomía, Instituto de Botánica Argrícola,; Apartado Maracay, Edo. Aragua, 4579, Venezuela