BOT300 Home Page

The taxonomic hierarchy; naturalness (14-Jan-03)


Rank of taxonomic categories recognized by the International Code of Botanical Nomenclature (ICBN)

Obligatory ranks in boldface

CATEGORY

STANDARD SUFFIX

EXAMPLE GROUPS

Kingdom

-bionta

Viridiplantae (green plants)

Phylum (or Division)

-phyta

Embryophyta (embryophytes)

Subphylum (Subdivision)

-phytina

Tracheophytina (vascular plants)

Class

-opsida

Angiospermopsida (angiosperms)

Subclass

-idae

Superorder

-anae

Order

-ales

Rosales

Suborder

-inae

Superfamily

-ariae

Family

-aceae

Rosaceae (rose family)

Subfamily

-oideae

Maloideae (apple subfamily)

Tribe

-eae

Maleae (apple tribe)

Subtribe

-inae

Genus

None; italicized, initial letter capitalized

Crataegus (hawthorn)

Species

None; genus name plus species epithet, italicized

Crataegus rivularis (river hawthorn)


cf. Tables 2 and 3, p. 515, Judd et al. (2002)


Hierarchical relationships between groups

Rosaceae

Rosoideae

 

Dryas

 

D. drummondii Richardson

D. hookeriana Juzepczuk

Maloideae

 

Sorbus

 

S. scopulina Greene

S. sitchensis Roemer

Crataegus

 

C. rivularis Nuttall

C. saligna Greene

C. douglasii Lindley

C. suksdorfii (Sargent) Kruschke

C. monogyna Jacquin

cf. Judd et al. (2002) Chapter 3, Classification and system in flowering plants: historical background (pp. 41-53) and Appendix 1, Botanical Nomenclature (pp. 511-520)

cf. also summary found HERE.


|BOT300S Home Page | U of T Botany | University of Toronto |

© 2003 Botany Department, University of Toronto.

Please send your comments to tim.dickinson@utoronto.ca; last updated 09-Jan-2003