• Education
    Ph.D. University of Florida, 1965. Systematic Botany/Statistics
    M.Sc. University of Wales, 1957. Plant Pathology
    B.Sc. (Honours) University of Wales, 1954. Agricultural Botany

  • Professional Employment
    1979-1985 State Extension Specialist, Florida Cooperative Extension Service; Assistant/Associate Professor, University of Florida
    1969-1974 Director, U. S. F. Botanical Garden; Assistant/Associate Professor, University of South Florida
    1965-1969 Chief Horticulturist and Assistant Botanist, Missouri Bot. Garden; Assistant Professor, Washington University, St. Louis
    1963-1965 Extension Botanist, Florida Cooperative Extension Service
    1959 Assistant to Curator, Montreal Botanical Garden
    1958-1960 Horticulturist, Fairchild Tropical Garden, Miami
    1957-1958 Plant Pathologist, South Porto Rico Sugar Company, Rep. Dominicana

  • Additional Academic Activities
    1966 Visiting Scientist, NSF Teacher Training Institute, Southeast Missouri State College.
    1971, 1972 Visiting Scientist and Faculty, Organization for Tropical Studies, Advanced Biology course Central America
    National Science Foundation, Systematics Program Review Panel

  • Non-University Employment
    1988-1998 President, Horticultural Education Services, Ft. Lauderdale, FL
    1985-date President, Horticultural Masterworks, Ft. Lauderdale, FL.
    1976-1981 Principal, Ornamental Growers Inc., Humacao, Puerto Rico
    1974-1976 Principal, Punta Aloe Corporation, Culebra, Puerto Rico
    1960-1961 Principal, Greenbelt Landscaping, Miami, FL.

  • Tropical Field Experience
    1957-1958 Dominican Republic
    1974-1979 Puerto Rico
    1957- date, work on Botanical or Horticultural projects in Mexico, Guatemala, Belize, Honduras, El Salvador, Costa Rica, Panama, Colombia, Venezuela, Trinidad, Dominica, Antigua, Virgin Islands, Puerto Rico, Dominican Republic, Haiti, Jamaica, Turks and Caicos, and Bahamas.

  • Publishing and Editorial Experience
    More than 100 publications, ranging from taxonomic work through industry studies to popular and editorial articles in horticulture
    Editor-in-chief, Betrock Information Systems: Print and internet publications

    Consulting editor,


  • Landscape Design and Installation
    University of Florida, AREC Ft. Lauderdale
    Palm Beach Junior College, Boca Raton Campus
    Conservatory , Myriad Gardens , Oklahoma City
    Butterfly World, Pompano Beach

  • Nursery Industry Studies
    Commonwealth of Dominica Development of Floriculture industry
    Lansea Incorporated, Dominican Republic Passiflora and Vegetable production for freezing
    American Aeroponics Associates Development of controlled environment propagation and culture Global Investment Corporation Foliage Production Nursery, Central America
    Medical Sciences International Design of mobile agricultural diagnostic laboratory
    Banco Central, Dominican Republic Diversification of the floriculture industry
    Gremial de Exportadores de Productos No Tradicionales Foliage crops for export from Guatemala

  • International Seminars and Shortcourses
    International Floriculture Seminar, Amsterdam (Organizer and speaker)
    IFTEX , London
    Agricultural Development Bank, Trinidad and Tobago Technical Assistance and Training Programs (2 weeks)
    Gremial de Exportadores, Guatemala New Directions in Cropping
    IICA/CFC Trinidad and Tobago, Regional Agriculture Investment Seminar
    Plantas Selectas de Cali Alternative Crops for the Tropics Nursery and Landscape

  • Appraisal/Expert Witness
    Hollingsworth Associates - Criteria for Crop Hazard Insurance Program
    Benlate and other chemicaI damage assessment and documentation
    Internal Revenue Service - Nursery valuation and project feasibility
    Florida Department of Transportation - Eminent Domain valuations
    Insurance valuation for freeze, flood, and hurricane damage