categoryZGrasses Grasses List 

OVAL SEDGE

Carex leporina

(Formerly: Carex ovalis)
Sedge Club- & Spike-Rush Family [Cyperaceae]

Fruit:
month8jul month8july month8aug

category
category8Grasses
 
status
statusZnative
 
flower
flower8cream
 
flower
flower8brown
 
petals
petalsZ0
 
type
typeZclustered
 
stem
stem8triangular
 
stem
stem8hollow
circular hole
sex
sexZmonoecious
 

1st May 2007, a brook, Lake Scotchells, IOW. Photo: (CC by 2.0) Geoff Toone
The flower stalks are stiff, triangular in cross-section with acute angles. It feels rough nearer the top. The inflorescence at the top consists of a compact small group of florets in several oval-heads, hence the 'oval' in the common name.


3rd June 2005, lorry park, College Close, Sandown, IOW. Photo: (CC by 2.0) Geoff Toone
It grows in compact tufts to 90cm high, with the usual minimum being 40cm. The underground rhizomes are very short with the roots being purple-brown or pale-purple-brown and often slightly curved lower down.


3rd June 2005, lorry park, College Close, Sandown, IOW. Photo: (CC by 2.0) Geoff Toone
The book does show a bit of a silvery sheen to parts of the fruit, so one presumes the silveriness on the specimens is a part of the florets properties and maybe a good identifying feature(?) - there cannot be many other sedges with silvery spikelets.


3rd June 2005, lorry park, College Close, Sandown, IOW. Photo: (CC by 2.0) Geoff Toone
The female glumes, not discernible individually in these photos, are unusual in being oval over 2/3rd their length culminating in a pointed tip without the usual S-shape at the top reminiscent of fountain-pen nibs - i.e. the curve is monotonic and with the tip having a subtended angle of c. 60°. Another identifying feature!


The beak of the fruit (not shown) is between 1 to 1.5mm long with the whole capsule being between 3.8 to 5mm long. It has wings.


  Carex leporina  ⇐ Global Aspect ⇒ Cyperaceae  

Distribution
 family8Sedge Club- & Spike-Rush family8Cyperaceae
 BSBI maps
genus8Carex
Carex
(Sedge)

OVAL SEDGE

Carex leporina

(Formerly: Carex ovalis)
Sedge Club- & Spike-Rush Family [Cyperaceae]