Agriculture Reference
In-Depth Information
Family
A group of one or more genera which
share underlying common features.
Names end in -aceae
Rosaceae
Genus
(pl. genera)
A group of one or more
plants with features in
common. Printed in
italics with a capital initial
letter
Rosa
Pyrus
Alchemilla
Kerria
Species
A group of plants which
can interbreed. The two
part name (binomial),
which is written in italics
consists of the genus to
which they belong and
the species name
Rosa
canina
Pyrus
communis
Alchemilla
mollis
Kerria
japonica
Rosa
'Roseraie
de l'Hay'
Pyrus
communis
'Conference'
Kerria
japonica
'Simplex'
Cultivar
(cultivated variety)
These are variants of species
which are selected or artificially
created. They are given a
vernacular name enclosed in
single quotation marks which is
not italicised. Where the
parentage is obscure the species
name may be dropped
Figure 4.7
Some plant groups within the family Rosaceae
(a)
Figure 4.8
(a) Yew (
Taxus baccata
) with 'berry'-like arils - a conifer
