TRIANDRIA DIGYNIA. 31 



40. HOEDEUM. 



1. H. murinum, lateral flowers barren ; calyx valves of the 

 intermediate one lanceolate, fringed ; stem a foot high, decum- 

 bent at the base. Wall Barley. 



Hab. Road sides and waste grounds. July. 



2. H. pratense, lateral flowers imperfect, with shorter awns ; 

 all the calyx valves bristle-shaped and rough ; stem 1J or 2 feet 

 high, erect, slender. Meadow Barley. 



Hab. Moist pastures, rare. Yarrow-haugh ; and side of 

 the river below the mouth of the Whiteadder, Dr 

 Thompson. July. If. 



Mr THOMPSON seems to have found H. maritimwn on Holy 

 Island opposite St Cuthbert's ; but our specimens from 

 that station belong to H. murinum. 



41. TBITICUM. 



1. T. junceum, calyx-valves blunt, many -ribbed; florets about 

 5, awnless ; main stalk smooth ; leaves involute, sharp-pointed ; 

 stem 12 or 18 inches high, tinged with violet below ; root creep- 

 ing. Whole plant glaucous, rigid, smooth. Sea Wheat-grass. 



Hab. Sandy sea-coast from Spittal southward, not very 

 common. Holy Island. July. I/. 



2. T. repens, calyx valves pointed or awned, lanceolate, many- 

 ribbed ; flowers about 5, sharp-pointed or awned ; leaves flat ; 

 root creeping ; stem 2 feet high. Couch-grass. 



Hab. Cultivated fields. July. 7/ 



The Quicken of the farmer, and too well known as the most 

 troublesome weed that infests his fields. At Naples, and 

 in some parts of France, the roots are collected for feed-' 

 ing horses. " Upon the banks of the Garonne I met wo- 

 men," says Mr A. YOUN&, "loaded with the roots of this 

 plant, going to sell it at market ; arid they informed me 

 it was bought to feed horses with." " As," says Mr 

 GRAY, " it is very saccharine, and may be had at the 

 cheapest rate, if not for nothing, it is recommended to be 

 brewed for a table-beer." 



