Chromosome Number Changes

Chromosome Number Changes Chromosomal variation is widespread in plants. Within a given genus or species the plants may have small differences in chromosome numbers (which is the characteristic number of chromosomes contained in the cell nucleus of a given species). Changes in chromosome number can occur by the addition of all or part of a chromosome, the loss of an entire set of chromosomes or the gain of one or more sets of chromosomes. 

Latin Name Location Flowering season Description

Antirrhinum majus

Snapdragon

Chromosome variant

Summer to autumn

An herbaceous perennial plant native to the Mediterranean area which grows up to 1m tall. Flowers are produced on a tall spike.

Fritillaria persica 'Adiyaman'

Persian lily

Chromosome variant

Spring

A bulbous perennial native to Southern Turkey, Iran and Iraq. It grows up to 90cm tall and bears bell shaped flowers.

Hyacinthus orientalis

'L'Innocence'

Common hyacinth or Dutch hyacinth 

Chromosome variant

Late winter to early spring

A bulbous perennial that grows up to 30cm with fragrant white bell-shaped flowers.

Hyacinthus orientalis ‘Myosotis’

Common hyacinth or Dutch hyacinth

Chromosome variant

Late winter to early spring

A medium blue hyacinth.

Hyacinthus orientalis 'Ostara'

Common hyacinth or Dutch hyacinth

Chromosomes variant

Late winter to early Spring

A deep blue hyacinth.

Lysimachia nummularia

Creeping Jenny,

Moneywort

Coloured  foliage

 

Summer

A hardy plant providing excellent ground coverage.  The Latin nummularia means ‘like a coin’ and refers to the golden colour and shape of the flowers.

Lysimachia nummularia 'Aurea'

Golden creeping Jenny

Coloured

foliage

Summer

Similar to Lysimachia nummularia but with yellow foliage.

Muscari armeniacum

Grape hyacinth

Chromosome variant

Spring

A bulbous plant with short flowering stems that grows to around 15cm tall.

Narcissus

'Geranium'

 

Chromosome variant

Spring

A bulbous, herbaceous perennial plant, growing up to 35cm tall. It has fragrant, long lasting flowers. 

Narcissus 'Inglescomb'

 

Chromosome variant

Spring

A bulbous perennial plant, which double blooms. It grows to around 30cm.

Oenothera odorata

Chromosome variant

 

Summer

A hardy perennial with tightly scrolled buds which are a pale lemon yellow when first open, maturing to an apricot yellow and finally a salmon-pink.

Oenothera tetragona var. riparia

Swamp evening primrose

Chromosome variant

Summer

A perennial that grows to 15-60cm with bright-yellow flowers with four petals.

Ranunculus ficaria

Lesser celandine

Chromosome variant

Early spring

A low-growing, hairless perennial flowering plant in the buttercup family. It has dark green, heart-shaped leaves and bright yellow, glossy flowers.

Thuja plicata

Giant cedar

Hybrids

 

An evergreen coniferous tree in the cypress family native to western North America. It is a large to very large tree, ranging up to 65-70m tall and 3-4m in trunk diameter. The foliage forms flat sprays which are green above and green marked with whitish stomatal bands below.

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