A-Z of botany: Grex

grex

Following on from yesterday’s hybrids, we have the word Grex. The word itself is from the Latin for flock or herd (gregis). Although grex refers to a number or population of individuals, if there is more than one grex they are grexes or gregis, abbreviated to gx. although why we need to abbreviate a four letter word with a three character abbreviation is beyond me.

Anyway, the word grex is usually applied to orchids though it is also used for rhododendrons. The word grex is applied to a group of hybrid individuals all from the same cross. An orchid pod can contain many thousands of seeds and produce many diverse individuals. Although when individuals are selected they are named and given cultivar names (in ” quotes) all these plants, which are like family members, also bear a grex name. So we get x Vuylstekearia Cambria ‘Plush’ (Cambria is the grex and ‘Plush’ is the cultivar – one of the many seedlings from a cross of the two parents which was selected for naming). This is one of the commonest orchids sold as pot plants. I am sure that the orchid above is
x Vuylstekearia and the grex is Cambria but I do not know the cultivar. The grex name is always written in ‘roman’ (not italicised) and with a capital letter.

rhodo-loderi-game-chick

In rhododendrons, the most famous is  the Rhododendron Loderi grex, produced at Leonardslee in Sussex by Sir Edmund Loder after 1901, hybrids between a particularly fragrant R. fortunei and R. griffithianum. They includes the huge pink Rhododendron Loderi ‘King George’ later blooming Loderi ‘Game Chick’ (above),  and even later  Loderi ‘Venus’.

 

 

, , , , ,

No comments yet.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

Ravenscourt Gardens

Learning life's lessons in the garden!

One Good Life in Los Angeles

Roslyn's observations about places and events around Southern California

IGPS Blog

The Irish Garden Plant Society - Lovers of Irish plants and gardens

AltroVerde

un altro blog sul giardinaggio...

vegetablurb

four decades of organic vegetable gardening and barely a clue

The Long Garden Path

A walk round the Estate!

Flowery Prose

Sheryl Normandeau's growing words....

ontheedgegardening

Gardening on the edge of a cliff

Uprooted Magnolia

I am a freelance Photographer born and raised in the Southeast. I have uprooted my life in Macon Georgia for a new life as an unlikely cowgirl in love with a handsome cowboy in Wyoming. I hope you enjoy my photo journal on life, love, and the spirit of Wyoming.

Interesting Literature

A Library of Literary Interestingness

Garden Variety

A Gardening, Outdoor Lifestyle and Organic Food & Drink Blog

For the Love of Iris

Articles, Tips and Notes from Schreiner's Iris Gardens

One Bean Row

Words and pictures from an Irish garden by Jane Powers

Plant Heritage

The world's leading garden plant conservation charity

HERITAGE IRISES

An English experience of gardening in Ireland - and back in the UK

%d bloggers like this: