1.2 Botanical classification and naming Flashcards Preview

RHS Level 2 Module R2101 > 1.2 Botanical classification and naming > Flashcards

Flashcards in 1.2 Botanical classification and naming Deck (10)
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Why is horticultural nomenclature important?

Stable (common names can change/evolve over time);

Universal and consistent (internationally understood);

Latin language is universally understood;

Unique and unequivocal;

Reflects classification and relationships;

Gives a clue to the plant's appearance or characteristics;

Prevents (or reduces) confusion over common name.


What is the name of the plant naming system?

Binomial system


What is the basic unit of biodiversity?



Each species name consists of....?

Genus name + specific epithet

(think: manufacturer + model!)


How is a (Binomial) species name written?

Generic epithet has an uppercase first letter, specific epithet in all in lower case.

Plant name is printed in italics.

If hand written, each word should be underlined.


Define the term, "generic name", or "genus"

A group of species which have similar characteristics

Sub-group of plant Family; rank above Species.


Define the term, "specific epithet", or "species"

A group of plants with characteristics in common and that also interbreed.

Sub-group of a Genus.


Describe the naming of cultivated plants

No italics, written in Roman, within apostrophes, and each word is capitalised. e.g. 'Rose Queen'.


What is the meaning of the term, cultivar? (5)

A shortening of the term, cultivated variety. It is a variant of a species.

Selected, bred and then maintained in cultivation, by humans.

(One of the most important taxonomic levels for a horticulturalist.)


Describe the Binomial System of naming plants

A species name consisting of two parts:

1. Generic name (Generic epithet)

2. Species name (Specific epithet)

Often in a Latin or Greek form