The Marañón Valley

A national treasure of Peru’s biodiversity with global significance.

Project Team

Zoë Goodwin - Lead project co-ordinator & botanist (RBGE, UK)

Paúl Gonzáles - Lead project co-ordinator & botanist (USM, Peru)

Tiina Särkinen - Primary Investigator (RBGE, UK)

Asunción Alipio Cano Echevarría - Primary Investigator (USM, Peru)

Niels Marciano Valencia Chacón - (USM, Peru)

Sebastián Riva Regalado - Fieldwork driver & technical help (USM, Peru)

Elluz Raquel Huaman Melo - (USM, Peru)

Pamela Jessica Nina Falcón - Digitization (USM, Peru)

Ancel Brisett Nuñes Marroquín - Digitization (USM, Peru)

Richard Junior Balvin Bernal - Digitization (USM, Peru)

Marlene Miñano Rivera - Finance (USM, Peru)

Carlos Augusto Reynel Rodriguez - Botanist (MOL, Peru)

Aniceto Daza Yomona - Fieldwork & Botanist (MOL, Peru)

Jose Luis Marcelo Peña - Botanist (La Universidad Nacional de Jaén, Peru)

Sonia Palacios Ramos - Finance (MOL, Peru)

Sandy Knapp - Botanist (BM, UK)

Project Objectives
  • Increase botanical data for montane regions by digitising, scanning, and curating specimens: Most of the herbarium work will take place at USM where we will aim to digitise, scan and curate as many specimens as we can during the project, and get specimens named by taxonomic experts.
  • Collect new specimens in the upper reaches of the Marañón valley where little biodiversity data exists thus far: Our collecting will focus on the Marañón dry forests which are home to many endemic species and genera. Field work will take place between January-May 2020. Collecting areas include (1) San Vicente de Paul (Distrito Longotea, La Libertad), (2) Huamachuco (Distrito Aricapampa, Ancash), (3) Sihuas (Distrito Sihuas, Ancash), and (4) Chagas (Distrito Chingas, Ancash).
  • Build a checklist of vascular plants of the Marañón dry forests.
  • Collect seed in collaboration with local partners for nurseries to grow Marañón endemics for regeneration projects linked to mining & dam projects.
Project Partners
Project Funding

This project, Increasing knowledge of dry and montane ecosystems across Peru, has been funded by the Newton Fund (project number 418235692) through the British Council in conjunction with assistance of the British Embassy in Lima.

Endemic plants of the Marañón Valley

Allamanda weberbaueri Markgr.

Begonia joshii Moonlight*

Cordia iguaguana Melch. ex I.M.Johnst.


Armatocereus rauhii Backeb.
Browningia altissima (F.Ritter) Buxb.
Calymmanthium substerile F. Ritter
Praecereus euchlorus (F.A.C.Weber) N.P.Taylor subsp. jaenensis (Rauh & Backeb.) Ostolaza
Rauhocereus riosaniensis Backeb. subsp. jaenensis (Backeb.) Ostolaza

Clusia rigida M.H.G. Gust.

Ditaxis katharinae Pax

Arquita celendiniana (G.P.Lewis & C.E.Hughes) Gagnon, G.P.Lewis & C.E.Hughes
Calliandra mollissima (Humb. & Bonpl. ex Willd.) Benth.
Cenostigma pluviosum (DC.) Gagnon & G.P.Lewis var. maraniona (G.P.Lewis & C.E.Hughes) Gagnon & G.P.Lewis
Coursetia cajamarcana Lavin
Maraniona lavinii C.E.Hughes, G.P.Lewis, Daza & Reynel
Mimosa incarum Barneby
Mimosa jaenensis Särkinen, Marcelo-Peña & C.E.Hughes
Mimosa lamolina C.E.Hughes & G.P.Lewis
Mimosa pectinatipinna Burkart
Parkinsonia peruviana C.E.Hughes, Daza & Hawkins

Heteropterys tiinae W.R.Anderson

Ruprechtia albida Pendry

Esenbeckia cornuta Engl.

This list of seed plants endemic to the dry forests of the Marañón valley is currently incomplete. If you have any suggestions for further additions please contact Zoë Goodwin.

*New species published as part of this project.

Further Reading