Irwin first began his association with the New York Botanical Garden while a graduate student at the University of Texas, Austin. During his time as a PhD student, Irwin traveled to Brazil and collected botanical specimens on behalf of NYBG, with the bulk of his collecting as a student taking place in 1958.[5] Irwin's field notebooks from his time in Brazil (in total eight expeditions between the 1950s and the 1970s) are held by the Archives of the New York Botanical Garden, along with earlier notebooks documenting his time in Guyana and notebooks for an expedition to Suriname between 1960 and 1972.[7] Irwin's vouchers were also deposited at NYBG and many can be viewed through the C. V. Starr Virtual Herbarium.[8]
Irwin was hired as a research associate at NYBG in 1960, promoted to associate curator in 1963, curator and administrator of the herbarium in 1966, head curator in 1968, executive director in 1971, and president in 1973, a position that he held until 1979 to embark on a sabbatical to pursue scientific research and writing projects. The tenure of his administration is remembered as the most difficult financial period for NYBG, and Irwin is credited with leading the organization during a very challenging time.[5]
Donald J. Bruckmann, chairman of the board of managers of the New York Botanical Garden, wrote of Irwin upon his departure: "Under his stewardship he brought the Garden to new eminence in the world of horticulture and plant science, and made it a great cultural institution in the city with the highest standards in the world. During his tenure the Enid A. Haupt Conservatory was restored and The Cary Arboretum in Millbrook, NY was established."[9]
In addition to his administrative work, Irwin is credited with initiating the Planalto do Brasil Program for the botanical study of the Brazilian Highlands region.[5]
The Irwins showed a strong commitment to conservation, placing a conservation restriction on their property within the Cape Cod National Seashore which was purchased by Anne Lieb Irwin's grandparents in 1920.[13][14]
Select publications
Goodland, Robert JA, and Howard S. Irwin. "Amazon jungle: green hell to red desert?". Developments in Landscape Management and Urban Planning (Netherlands) eng no. 1 (1975).
^ abFrankel, Mortimer (1972). "News Release – Dr. Irwin is Appointed Executive Vice-President of the New York Botanical Garden". The New York Botanical Garden.