Grasses List |
Sedge Club- & Spike-Rush Family [Cyperaceae] |
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30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
A medium to low plant growing to 45cm high with greyish green stems. [The greener leaves from bottom right to the middle are probably of some interloping grass as the real leaves of Flat Sedge are a similar dull green with browny stripes in places] |
30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
The inflorescence at the top is a short flattened spike with between 5 to 8 spikelets per spike. |
30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
The spikelets (of which there are 8 in this specimen) are arranged alternately slightly higher and opposite to each other, (and not all around the top as most spikelets are arranged on other Sedges). Each spikelet can contain between 3 to 5 flowers. |
30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
The lowest sheaths on each spikelet are called glumes, which are blackish-brown and 5mm long and blunt at the top. |
30th June 2018, West Kirby, Wallasey, Merseyside. | Photo: © RWD |
The green basal bract at the bottom of the spike does not usually overtop the spike (it usually being well short) - (unlike the otherwise fairly similar Flat Sedge (Blysmus compressus) on which the basal bract overtops the spike). |
Easily mistaken for the very similar Flat Sedge (Blysmus compressus): [see caption on last photo]
Not to be semantically confused with : Easily distinguished from other Sedges by the spike of flowers which are alternately on opposite sides of the stem in a flat configuration - hence the name 'Flat Sedges' - of which there are only 2, this one and Flat Sedge (Blysmus compressus). Uniquely identifiable characteristics Distinguishing Feature : see above It grows in saltmarshes and on turfy dune-slacks on the coasts of of Britain and Ireland but apparently not further south than North Lincolnshire or Glamorgan (last time anyone looked)...
Beware of the similar Flat Sedge (Blysmus compressus) which also grows in saltmarshes near the sea. This too has spikelets on opposite sides, but there are usually more of them - between 10 to 20 (rather than the 3 to 8 of |
Blysmus | rufus | ⇐ Global Aspect ⇒ | Cyperaceae |
Blysmus (Flat-Sedges) |
Sedge Club- & Spike-Rush Family [Cyperaceae] |