GEAMIlfEJE. 595 



itself; -witlun each of. the 2 lateral pairs is usually an inner glume smaller 

 th;in the central one, either empty or enclosing a male or rudimentary 

 flower. 



In moist meadows, and pastures, in central and southern Europe, ex- 

 tending eastward all across Russian Asia and northward to southern Scan- 

 dinavia. Frequent in England and Ireland, but scarcely extending into 

 Scotland. Fl. early summer. 



3. ^Vall Barley. Hordeum muriuum, Linn. 

 (Eng. Bot. t. 1971.) 



A rather coarse, tufted Grass, the stems decumbent at the base, 1 to 2 

 feet long. Leaves often hairy. Spike dense and cyUndrical, 3 or 4 inches 

 long, thickly beset with the long rough awns. Outer glumes of the 3 spike- 

 lets all awn-like, but those of the central spikelet somewhat broader at the 

 base and cihate. Inner glume of each spikelet lanceolate and rolled inwards 

 at the base, ending in a long awn ; that of the central spikelet enclosing a 

 perfect flower; those of the lateral ones empty or with a very imperfect male 

 flower. 



In waste places, on roadsides, etc., in central and southern Europe and 

 western Asia, extending northwards to southern Scandinavia, and now 

 naturalized in many parts of the world. Frequent in the greater part of 

 England and Ireland, but rare or local in Scotland. Fl. all summer. 



4. Sea Barley. Hordeum maritimuta, With. 

 (Eng. Bot. t. 1205.) 



Very near the Wall B., but smaller and somewhat glaucous, the spikes 

 smaller, with shorter awns, and the 3 pairs of outer glumes are all lanceolate 

 at the base but not cdiate, and one of each of the lateral pau's is a httle 

 broader than the others. 



On the seacoasts of western Europe, and all round the Mediterranean, 

 extending northward to Denmark, but not into the Baltic. Abundant on 

 several of the English and Irish coasts, but a very doubtful inhabitant of 

 Scotland. Fl. summer. 



XXVII. TRITICUM. TEITICUM. 



Spikelets several-flowered, closely sessile, and single in each notch of a 

 simple spike, the side of the spikelet or edge of the glumes being next the 

 axis of the spike. Outer empty glumes 2, similar to the flowering ones. 



To this genus belong the cultivated Wheats, aU annuals, of uncertain 

 origin, by some said to be indigenous in some little-known regions of western 

 Asia, by others beUeved to be altered forms of the common south European 

 and west Asiatic Grasses known under the generic name of Mgiloj)s. The 

 British wild species are all perennials, and form part of a diflferent section, 

 distinguished by some as a separate genus, under the name of Agropyron, 

 which should be adopted if it be definitively ascertained that the annual 

 Wheats are identical with .Xgilops. 



Eootstock creeping 1. Conch T. 



Ho creeping rootstock 2. Fibrous T. 



1. Couch Triticum. Triticum repens, Linn. 

 (Eng. Bot. t. 909. Couchgrass.) 

 A perennial, with an extensively creeping rootstock, and stifi", ascending 



