a clump of green rushes

[Tinkerbell]

Just opposite me was a clump of green rushes, with dark velvety spikes.


it refers to green wheat spikes?

 

[Anglika]

There is nothing in the sentence you give to indicate the presence of wheat - and what does not have spikes.
Google Image Result for http://www.floridata.com/ref/J/images/junc_ef3.jpg

 

[Tinkerbell]

I understood. Thank you :-D