The library

Choose where to start

Verified dichotomous keys, ready to walk through step by step. Hover a cover for a closer look and hit «More info» to see what it covers.

Guided itineraries

When you finish a key, it takes you to the one that matches your result.

Step 1

Step 2

Guided itinerary

Mammals

Group of keys

Mammalia

ArtiodactylaCarnivoraLagomorpha

Start the itinerary4 keys · 35 taxa

Step 1

Step 2

Guided itinerary

Butterflies

Lepidoptera

PapilionidaePieridae

Start the itinerary3 keys · 32 taxa

Directory · 4 themesOpen a theme to see all its keys

Step 1es

Clase · Mammalia

Class Mammalia of Spain

6 taxaStart

6 taxa · 7 steps

Step 2es

Orden · Carnivora

Order Carnivora of Spain

16 speciesStart

16 species · 12 steps

Step 2es

Orden · Lagomorpha

Order Lagomorpha of Spain

5 speciesStart

5 species · 4 steps

Step 2es

Orden · Artiodactyla

Orden Artiodactyla de España

8 speciesStart

8 species · 7 steps

Step 1es

Orden · Lepidoptera

Order Lepidoptera of peninsular Spain

5 taxaStart

5 taxa · 4 steps

Step 2es

Familia · Papilionidae

Familia Papilionidae de España peninsular

6 speciesStart

6 species · 5 steps

Step 2es

Familia · Pieridae

Familia Pieridae de España peninsular

21 speciesStart

21 species · 20 steps

Grupo

Dichotomous key to the genera of carnivorous plants in Spain.

4 taxaStart

4 taxa · 3 steps

Género · Drosera

Dichotomous key to the genus Drosera L. of Europe

3 speciesStart

3 species · 2 steps

Género · Drosera

Dichotomous key to the genus Drosera L. in Spain

3 speciesStart

3 species · 2 steps

Género · Pinus

Genus Pinus of peninsular Spain

5 speciesStart

5 species · 5 steps

Grupo

Common Gymnosperms of the Pacific Northwest

18 taxaStart

18 taxa · 18 steps

Orden · Testudines

Order Testudines (marine)

7 speciesStart

7 species · 6 steps

Fílum · Porifera

Fílum Porífera

7 speciesStart

7 species · 4 steps

Clase · Bivalvia

Clase Bivalvia de America del Norte

159 taxaStart

159 taxa · 160 steps

Choose where to start

Guided itineraries

Mammals

Butterflies

Mammals

Class Mammalia of Spain

Order Carnivora of Spain

Order Lagomorpha of Spain

Orden Artiodactyla de España

Butterflies

Order Lepidoptera of peninsular Spain

Familia Papilionidae de España peninsular

Familia Pieridae de España peninsular

Flora

Dichotomous key to the genera of carnivorous plants in Spain.

Dichotomous key to the genus Drosera L. of Europe

Dichotomous key to the genus Drosera L. in Spain

Genus Pinus of peninsular Spain

Common Gymnosperms of the Pacific Northwest

Unfiled

Order Testudines (marine)

Fílum Porífera

Clase Bivalvia de America del Norte