categoryZGrasses Grasses List 

CYPERUS SEDGE

CYPRESS SEDGE / HOP SEDGE

Carex pseudocyperus

Sedge Club- & Spike-Rush Family [Cyperaceae]

month8may month8jun month8june

category
category8Grasses
status
statusZnative
flower
flower8cream
petals
petalsZ0
type
typeZcatkins
stem
stem8triangular
sex
sexZmonoecious

19th Aug 2013, Knepp, West Sussex. Photo: © Dawn Nelson
Looks similar to Pendulous Sedge in that sometimes the catkins are pendulous, but with stems (rather than leaves) only 90cm long it does not grow as tall as that which has stems from 60 to 180cm.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
Firstly, the broad sword-leaves behind are nothing to do with Cyperus Sedge.This specimen has only 2 female catkins, the usual complement is four.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
It has a short rhizomatous root. The bright glossy-green leaves, at 120cm long, are longer than the sharply-triangular stalks, which are rough on the edges. Has long leaf-like bracts, the lowest of which is far longer than the tip of the top of the inflorescence.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
There are 3 to 4 female shortish but wide catkins between 20 and 100mm long topped by a much thinner and slightly longer male catkin 20 to 60mm long.


31st July 2013, Blashford Lakes Nature Reserve, Hampshire. Photo: © Dawn Nelson
The usual complement of 4 female catkins (and just one male catkin).


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
The female catkins turned to fruit. The flask-shaped fruits still have the 3 stigmas attached.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
The rear of the female catkins have long thin spikes longer than the female flowers, these are leaf-like bracts. It looks very prickly, but isn't.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
At the top of the stalk is the long thin male catkin, longer and thinner than the female catkins.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
Male catkin.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
Male catkin with stamens and anthers.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
Your Author is not sure whether this specimen, which was growing within feet of the others, is of Cyperus Sedge or not; for the female catkin stalks look shorter, stiffer, not as pendulous, and certainly not as long-spiky at the rear of the catkins. Could it be a younger specimen, or a totally differing sedge??


31st July 2013, Blashford Lakes Nature Reserve, Hampshire. Photo: © Dawn Nelson
The way in which the sheathed leaf-like bract parts company with the triangular and long flowering stalk.


31st July 2013, Blashford Lakes Nature Reserve, Hampshire. Photo: © Dawn Nelson
The fruit is flask-bottle-shaped, 4 to 5mm long, ellipsoidal, ribbed, green and spreading, quickly falling off when ripe, and a long (2mm) smooth and deeply forked beak. The female glumes are 5-10mm long with an oval base and a long and fine hairy point. The utricles (which are bottle-like coverings wrapping around the internal nutlet) are 4 to 5mm long with a stalk-like base.


11th June 2016, Cronton ex-Colliery reserve, Merseyside. Photo: © RWD
Your Author is not sure whether this specimen, which was growing within feet of the others, is of Cyperus Sedge or not; for the female catkin stalks look shorter, stiffer, not as pendulous, and certainly not as long-spiky at the rear of the catkins. Could it be a younger specimen, or a totally differing sedge?? Perhaps it is the hybrid between Cyperus Sedge and Bottle Sedge??


It belongs to the Cyperaceae (sedges) family of plants, but should not be semantically confused with Cypress Spurge, Sawara Cypress, Leyland Cypress nor any other Cypress trees.

Hybridizes with : Bottle Sedge (Carex rostrata) to produce Carex × justi-schmidtii which was first found in 1955 in West Norfolk and subsequently in Fermanagh and West Lancashire.

Some similarities to : Pendulous Sedge (Carex pendula) but that is larger at 60-180cm tall with leaves 20-100mm long, has more and longer female catkins and the leaves are fresh green above but glaucous green underneath.

It grows in swamps, ponds, ditches (where this was), marshes, woodland pools and by ponds rivers and canal. It is frequent in England as through Lancashire and north to Morayshire but is very rare in Wales. It avoids more acidic waters such as on the pennine moorlands.


  Carex pseudocyperus  ⇐ Global Aspect ⇒ Cyperaceae  

Distribution
 family8Sedge Club- & Spike-Rush family8Cyperaceae

 BSBI maps
genus8Carex
Carex
(Sedges)

CYPERUS SEDGE

CYPRESS SEDGE / HOP SEDGE

Carex pseudocyperus

Sedge Club- & Spike-Rush Family [Cyperaceae]