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The Planalto Expedition Program

An “Interview” with Howard S. Irwin and William R. Anderson

A Year in Brazil: Marian Irwin's letters 1965-66

The Participants

The Expeditions and Maps

Photographs from Dorothy Irwin

Photographs from William R. Anderson

Photographs from Steven R. Hill

Irwin’s final report to NSF

This Catalogue

Introduction and Search

Project Interns

Related Catalogues

Vascular Plant Specimens from Brazil Catalogue

Species of Eastern Brazil Catalogue

Vascular Plant Type Catalogue

Flora and Mycota of Acre, Brazil

For More Information

A Guide for Use of the Virtual Herbarium

Catalogue of Vascular Plant Species
of Central and Northeastern Brazil

This Catalogue contains information from ca. 97,000 specimens housed in The New York Botanical Garden Herbarium that represent vascular plant species occurring in Central and Northeastern Brazil.

Specimens from the Distrito Federal and the following states are included: Ceará, Goiás, Maranhão, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Piauí, and Tocantins. The information in this catalogue is intended to provide a means to assess the geographic distributions of species in this region and the diversity and endemism of the flora.

This Catalogue presents one of the jewels of the NYBG Herbarium—the set of about 42,000 specimens collected by New York Botanical Garden staff members, Howard S. Irwin and William R. Anderson, and several collaborators during a series of expeditions to the Brazilian Planalto funded by The National Science Foundation from 1964—1975 and carried out in collaboration with the University of Brasília. At the time, the flora of the Planalto was relatively unknown, and many new species were discovered, most represented by types in the NYBG Herbarium. Irwin’s 1972 report to NSF is a concise, informative summary of the accomplishments made as a result of the Planalto program.

Because plants don’t respect political boundaries, you may wish to use this Catalogue in conjunction with the Catalogue of Vascular Plant Species of Eastern Brazil, which contains records of specimens from the coastal states from Rio Grande do Norte to Rio Grande do Sul. Specimens from the Amazonian states are being catalogued currently, but most specimens from Acre are already in the database. Accessing all records of a vascular plant species from Brazil that are catalogued to date is more efficiently done via a search of the Catalogue of Vascular Plant Species of Brazil.

Specimen records can be obtained by selecting from the checklist of families or by searching the database directly. Selecting a family will return a list of genera and species in that family. Selecting a genus or species name will return a list of specimen records, details of which can be obtained individually by clicking on the taxon name or in groups by clicking the boxes to the right of the records and then the “View checked” button at bottom of the page. Searching the database directly will return a similar list of specimen records.

Our goal is to make this catalogue as useful as possible. If you have any suggestions or if you find errors in this catalogue, please take a moment to send your comments to the

Funded in part by the National Science Foundation (DBI-0543335), Jacquelyn Kallunki, P.I., and Emily Ashley, Co-P.I.

Information included in the records (click here)

 Advanced Search
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Scientific Name
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Searches the genus, species, infraspecies, and author abbreviations of a name.
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(all determinations)
Scientific Name
(all determinations)
Searches the genus, species, infraspecies, and author abbreviations of a name.
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Common Name
Determiner Searches initials and last name.
Collector Searches initials and last name.
Collection Number
Collection Date
(dd mm yyyy)
One or more may be used to search the collection date.
Continent Examples: Africa, Antarctica, Asia, Central America, Europe, North America, Oceania, South America, West Indies
Country Avoid abbreviations. Examples: Netherlands Antilles; Papua New Guinea; Philippines; United States of America
State/Province Avoid abbreviations. Examples: Mato Grosso do Sul; Nevada; Santa Catarina
Precise Location
Plant Description
Barcode Unique NY-assigned specimen barcode number
Type Status "Holotype," "Isotype," etc.
Records with Images Limits searches to only those records with images or other multimedia attachments.
Records Per Page

Search Tips

Searches in the Virtual Herbarium are by default word-based. The fastest searches are made by using whole words as the criteria. Wildcard characters can be used to find partial words, but search times will be significantly longer.

Use an asterisk (*) as a substitute for any number of characters in a word. (Example: "Rio*" in the Province/State field will return specimen records from "Rio Grande do Norte," "Rio Grande do Sul," "Rio de Janeiro," etc.)

Use an exclamation mark before a word to specifically exclude that word from the search. (Example: "Virola" in the Genus field and "!glaziovii" in the Species field will return all records of Virola except Virola glaziovii.)

Use quotation marks to search for exact phrases. Words not enclosed by quotation marks will be used to return records with all of the words, but not necessarily in the order typed.

*The Scientific Name field searches the genus, species, infraspecies, and author abbreviations of a name.
Example 1: the search term "brevifolium" finds specimens of Panicum brevifolium, Linum brevifolium, etc.
Example 2: the term "Stafleu" finds specimen records of numerous taxa described by Frans A. Stafleu.

Author abbreviations can be found using Harvard University Herbaria's Index of Botanists.

Copyright © 2007, The New York Botanical Garden

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