categoryZGrasses Grasses List 

MARRAM

MARRAM GRASS

Ammophila arenaria

Grasses Family [Poaceae]

month8jun month8june month8jul month8july month8aug

category
category8Grasses
status
statusZnative
flower
flower8green
inner
inner8cream
petals
petalsZ0
type
typeZspiked
stem
stem8round
sex
sexZbisexual

23rd May 2008, Shell Island, west Welsh Coast, Wales. Photo: © RWD
Grows on sand dunes on the coasts as does the similar Lyme Grass (Leymus arenarius).


23rd May 2008, Shell Island, west Welsh Coast, Wales. Photo: © RWD
Grows up to 1.2m high in sand dunes, often getting buried by wind-blown sand on the ever-shifting dunes.


2nd July 2009, dunes, coast, Ainsdale, Sefton. Photo: © RWD
Grows in fairly large masses.


2nd July 2009, dunes, coast, Ainsdale, Sefton. Photo: © RWD
The leaves are greyish-green and appear very narrow and cylindrical, but are flat leaves which have curled over as usual.


Photo: © RWD
The flowering spike is dense and often thickest about the middle or slightly lower. The anthers are fawn coloured and are angled outwards or outwards and downwards.


23rd May 2008, Shell Island, west Welsh Coast, Wales. Photo: © RWD
The leaves of Marram grass are fairly narrow but appear mostly to be almost cylindrical because they curl over. This specimen at the front appears to be starting again after being buried deep into the dry sand with mostly new growth growing on top of buried older growth.


23rd May 2008, Shell Island, west Welsh Coast, Wales. Photo: © RWD
Leaves curled over.


9th Aug 2009, dunes, coast, Ainsdale, Sefton. Photo: © RWD
Spent 'flowers' cover the top part of the flower stem with now dried fawn-coloured one-flowered spikelets.


19th Aug 2009, dunes, coast, Crosby, Sefton. Photo: © RWD
The Magic Roundabout. The leaves were being blown around in circles making patterns in the dampish sand.


19th Aug 2009, dunes, coast, Crosby, Sefton. Photo: © RWD
The leaves are quite robust to be able to scour out sand which itself is very robust. Indeed, for both sand and grasses contain resilient silicon dioxide compounds.


Hybridizes with : Wood Small-reed (Calamagrostis epigejos)

Some similarities to : Lyme Grass (Leymus arenarius) another grass but which is bluish-grey (rather than grey-green for Marram), grows slightly taller to 1.5m (rather than 1.2m for Marram), the leaves are a broad 15mm wide (much narrower for Marram no only because they are in-rolled), spikelets on alternate opposite sides (all around the stem for Marram).


  Ammophila arenaria  ⇐ Global Aspect ⇒ Poaceae  

Distribution
 family8Grasses family8Poaceae
 BSBI maps
genus8Ammophila
Ammophila
(Grasses)

MARRAM

MARRAM GRASS

Ammophila arenaria

Grasses Family [Poaceae]