I also continue to serve as principal coordinator and senior editor of Index Herbariorum, an international guide to the location and contents of the world's 3167 public herbaria.  I also serve as coordinator and editor of the on-line edition of Index Herbariorum, which provides information on 3167 herbaria and 9534 associated staff members in 165 countries and is available on the NYBG web site <http://www.nybg.org/bsci/ih/ih.html>.

I serve on the councils for the International Association for Plant Taxonomy and the International Organization for Plant Information.

• Director Emerita, William and Lynda Steere Herbarium; Honorary Senior Curator, Institute of Systematic Botany.
• Born 1940.
• Ph.D. University of Washington (1968).
• Herbarium Specialist, The New York Botanical Garden (1968-1969); Associate Curator and Herbarium Administrator (1969-1971); Administrator of the Herbarium (1971-1973); Herbarium Supervisor and Administrator of the Phanerogamic Herbarium (1973-1975); Head Curator (1975-1981); Assistant Vice President for Science (1981-1991); Acting Vice President for Science (1988-1991); Director of the Herbarium (1981- 2000); Director Emerita of the Herbarium (2000- ); Honorary Senior Curator, Institute of Systematic Botany (2000- ).
• Editorial Board, American Journal of Botany (1975-1979);
• Copy Editor, Intermountain Flora (1974- );
• Editor, Index Herbariorum (1974- );
• Associate Editor, Brittonia (1975-1991);
• Editorial Board, Curator (1983-1990);
• Editor, News and Notes, Taxon (1983-1988);
• Managing Editor, Brittonia (1984-1991);
• Board of Advisory Editors, The Encyclopedia Americana (1986-1992);
• Advisory Board, Memoirs of the New York Botanical Garden (1988- );
• Advisory Board Flora Neotropica (1988- );
• Editor, Index Herbariorum Additions, Taxon (1974- );
• Editor, Herbaria and Institutions, Taxon (1993- ).
• Memberships in American Association for the Advancement of Science; American Institute of Biological Sciences, Governing Board member (1981-1983), Council (1984-1985); American Society of Plant Taxonomists, Council member (1975-1979), Treasurer (1985-1988), President-elect (1988-1989), President (1989-1990), Past President (1990-1991); Association of Systematics Collections, Board of Directors (1988-1991), Secretary (1992-1995); Botanical Society of America, Secretary (1975-1979), Vice President (1980), Council member (1975-1984), President (1981); California Botanical Society; International Association for Plant Taxonomy, Council member (1994-2006); International Organization for Plant Information, Council member (1991-2003); Species Plantarum Project, Council member (1990-1991); Torrey Botanical Club, Council member (1982-1983).
• Advisory Committee for Systematic Resources in Botany (1972-1980); Systematics Collections Committee, American Society of Plant Taxonomists (1977-1980); Scientific Publications Committee, New York Botanical Garden, Chairman (1990-1991)(1992- ); Science Advisory Group, New York Botanical Garden, Chairman (1990-1991); Natural Science Collections Advisory Committee, National Institute for the Conservation of Cultural Property (1991-1992); Systematics Agenda 2000 Advisory Board (1991-1995).
• Distinguished Service Award of the New York Botanical Garden (1988);
• Botanical Society of America Merit Award (1991);
• Association of Systematics Collections Annual Service Award (1995).

Selected Publications

• Holmgren, P.K. 1971. "A biosystematic study of North American Thlaspi montanum and its allies." Mem. New York Bot. Gard. 21(2):1-106.
• Holmgren, P.K., D. Johnson, J.A. Kallunki, S. Keller, N. Murray, J.F. Pruski, and M.A. Wetter. 1985. Index to the specimens filed in the New York Botanical Garden vascular plant type herbarium. Meckler Publishing Company, Westport, CT. 587 pp.
• Holmgren, P.K., N.H. Holmgren and L.C. Barnett. 1990. Index herbariorum. Part I: The herbaria of the world. 8th edition. New York Botanical Garden. 693 pp.
• Holmgren, P.K. and N.H. Holmgren. 1992. Plant specialists index: Index to specialists in the systematics of plants and fungi based on data from Index herbariorum (herbaria), edition 8. 394 pp. Regnum Veg. 124.
• Holmgren, P.K. 1977-1997. Various families. In: A. Cronquist, A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. Intermountain Flora 3A: 5-26, 33-64, 172-246, 256-300, 308-317, 322-330; 4: 31-51, 515-526; 6: 538-546.
• Holmgren, P.K. and N.H. Holmgren. 2001. Index Herbariorum on the Internet [information for 3167 herbaria and 9534 associated staff members in 165 countries], <http://www.nybg.org/bsci/ih/ih.html>.