The Andean Botanical Information System (ABIS) presents information from floristic and systematic investigations of the flowering plants (phanerogams) of Andean South America. Topics include selected geographic regions and groups of Andean plants, flora of coastal Peru and Chile, floristic inventories from a variety of habitats in northern Peru, bibliographic resources, and searchable databases.
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After 43 years of service, beginning 1 April 2021, Field Museum Curator Emeritus, Michael Dillon, took up residence in Arequipa, Peru, where he will reside as Visiting Scientist at the Instituto Científico Michael Owen Dillon (IMOD). While in residence, he is concentrating on monographic studies on Nolana (Solanaceae), Mniodes (Asteraceae), Paranephelius (Asteraceae), Cichorieae for the Flora de Peru, and floristics of southern Peru.

El Instituto Científico

Av. Jorge Chávez 610 - Cercado Arequipa, Perú

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Guide to Field Museum Databases:
Lomaflor, AltoMayo, & Andean Flora - Open this page for live database links!

Five years of collecting in the Alto Mayo forests yielded 2200 collections (plus duplicates) representing 125 families, 405 genera, and over 750 species. No fewer than 112 species from 41 families were added to the inventory for flowering plants for the Department of San Martin. Some 14 species were added as new records for the country of Peru, and 13 species were determined to be "new to science" (sp. nov.). This volume is dedicated to a principal collaborator, Dr. Isidoro Sánchez Vega (1938-2015), a Field Museum Research Associate. The book illustrates with photographs 76 flowering plant families and 198 species. A database for Alto Mayo plants contains 2162 records and 1475 images of digitized herbarium vouchers available via the internet. Click Here to Download 210 mm wide x 297 mm long, 420 pages, illustrated with 224 color photographs. ISBN: 978-0-578-97524-5

Orders Apiales (Asterids I) & Gentianales (except Rubiaceae; Asterids II). 11 families with 1021 genera, including the Griseliniaceae. Identification keys are provided for families and genera, and likely phylogenetic relationships.

A new genus from the central Andes. Characterized among Andean Gnaphalieae by its dioecious or polygamo-dioecious breeding system most closely resembles Antennaria a northern hemispheric genus.

Impact of climate changes and land use in the distribution of species of endemic genera of Asteraceae from Arequipa

Major aims of the paper are to provide a nearly complete phylogeny of the Lucilia-group at generic level and discuss the evolutionary trends and taxonomic significance of achenial trichome morphology. Conducted a phylogenetic analysis of the New World Gnaphalieae with nrDNA (ETS, ITS) sequence data from 18 genera of the Lucilia-group and utilized results to examine morphological evolution of achenial trichome types and apical myxogenic cells.

Nuevas combinaciones en Belloa J. Rémy y nuevos diagnósticos de Andean Lucilia Cass. y Mniodes (A.Gray) Benth. (Gnaphalieae, Asteraceae)

Una nueva especie endémica de Nolana (Solanaceae-Nolaneae) cerca de Iquique, Chile

Cuatro nuevas especies endémicas de Nolana (Solanaceae-Nolaneae) de Arequipa, Perú

Diversidad Floristica de la Loma Cerro Campana, Prov. Dept. La Libertad, Trujillo - Peru

S. Leiva G., M. Zapata C., G. Gayoso B., L. Chang C., M.O. Dillon, & V. Quipuscoa S. 2014. Arnaldoa 21(1): 187-220.

Diversidad de Plantas Vasculares de las Lomas de Yuta, Prov. de Islay, Arequipa, Peru, 2016

V. Quipuscoa S., C. Tejada P. C. Fernandez A., A. Pauca T. & M.O. Dillon. 2016. Arnaldoa 23(2): 517-546.

Floristic Checklist of the Peruvian Lomas Formations

M.O. Dillon, S. Leiva G., M. Zapata C., P. Lezama A. & V. Quipusco S. 2011. Arnaldoa 18(1): 7-32.

Flora of the Lomas Formations
Field Museum Botany Collection Databases

Flora of the Alto Mayo Cuenca
Field Museum Botany Collection Databases

Flora of the Andean Montane Forests
Field Museum Botany Collection Databases

Nomenclatural changes in Nolana
(Nolaneae, Solanaceae)

Cambios nomenclaturales en Nolana
(Nolaneae, Solanaceae)

Gayana Botánica 66(2): 294-296.

Click for pdf copy.

Una nueva especie de Magnolia (Magnoliaceae) del
Alto Mayo, San Martín, Perú

Tribe Liabeae - Chapter 27
[Note: pdf download 1.6 M]
YouTube Click Cover

Federico Luebert, Jun Wen, & Michael O. Dillon
Botanical Journal of the Linnean Society
159: 32-51. 2009.

Molecular Phylogeny and Evolution
49: 561-573. 2008.

Paranephelius & Pseudonoseris:
classification, biogeography,
and Andean orogeny

Phylogeny of Nolana (Nolaneae, Solanoideae, Solanaceae) as inferred from granule-bound
starch synthase I (GBSSI) sequences

Five New Peruvian Nolana Species

Five New Chilean Nolana Species

Fieldiana volumes are actively being digitized and placed on the internet.
This unprecedented access to literature is one of the products of the Encyclopedia of Life Project.

Email Contact:

Michael O. Dillon
Curator Emeritus
Integrative Research Center
The Field Museum
1400 South Lake Shore Drive
Chicago, Illinois 60605, USA

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Last updated: Jauary 2021