1 6 TRIANDRI A MONOGYNIA. 



* * * Stem triangular. Panicle leafy. 



7- S. maritimus, stem 1 to 3 feet high ; panicle terminal ; spikes 

 conglomerate ; glumes torn, with an intermediate point ; stig- 

 mas 3. Marsh Club-rush. 



Hob. Salt marshes. Mouth of the Whiteadder ; Yarrow 

 Haugh ; below Brock's Mill ; " Coast near Beal/' 

 Thomp. July, Aug. I/. 



8. S. sylvaticus, stem about 3 feet high, leafy throughout ; pa- 

 nicle terminal, cymose, repeatedly compound ; flower-stalks 

 sheathed at the base ; spikes aggregate, small. Wood Club-rush. 



Hob. River sides above the Union Bridge, plentiful. 

 July. If 



19. ELEOCHARIS, 



1. E. palustris, root creeping ; stems round, leafless, sheathed 

 at the base, a span high ; spike oblong, naked ; stigmas 2 ; seed 

 lenticular, most convex at one side. Creeping Spike-rush. 



Ilab. Marshy places, and at the sides of rivers and 

 ponds, common. June, July. If 



20. ERIOPHORUM. 



* Spike solitary. 



1. E. vagina-turn, stem triangular above, round below with a 

 swelling sheath ; spike ovate; glumes membranous. Hare's- tail 

 Cotton-grass. 



Hob. Turfy boggy heaths. Below Shoreswood Hall, Dr 

 Thompson. Murton Craigs ; and common on our more 

 elevated moors. April. I/. 



* * Spikes several. 



2. E. polystachion, stem round ; leaves flat, lanceolate, with a 

 triangular point ; stalks of the spikes smooth ; hairs thrice the 

 length of the spike. Broad-leaved Cotton-grass. 



Hob. Boggy meadows, not common. Below Allerton 

 Mill, plentiful ; in a field east of Easington House, be- 

 low Belford, now ploughed out. April. If 



Root fibrous. Stem 2 feet high, soft, smooth, leafy, round, 

 obtusely triangular upwards, sometimes much compressed. 



