506 GRAMINEJE. [HORDEUM. 



the back, awned. Palea as long, narrow, 2-keeled. Scales 2, ciliate. 

 Ovary hirsute ; stigmas 2, subsessile, feathery. Fruit free or adherent to 

 the palea, grooved in front. DISTRIB. N. temp, and warm regions, 

 S. America ; species 12. ETYM. The old Latin name. 



* Flowers of lateral spikelets 2-sexual y of middle male. 



1. H. sylvat'icum, Huds. ; perennial, spike subterete, empty glumes 

 setaceous scabrid. El'ymus europce'us, L. 



Copses and woods in chalky soil, from Northumbd. to Hants and Kent ; absent 

 in Wales and the E. counties ; Dublin (native ?) ; fl. June-July. Perennial, 

 bright green. Stems 1-3 ft., strict, erect, smooth. Leaves ^ in., broad, 

 flat, thin, scaberulous; sheaths hispid, hairs reflexed ; ligule very short. 

 Spikes 2-4 in., strict, erect, terete, green. Spikelets f in., erect, subsessile ; 

 empty glumes awned, 3-nerved ; fl. glumes linear-oblong, dorsally compressed, 

 scabrid, shorter than the straight flexuous awn, nerved towards the tip ; 

 palea with smooth keels. Fruit very narrow. DISTRIB. From Gothland 

 to Spain, Italy, and Russia. 



** Lateral spikelets jlowerless or male, middle 2-sexual. 



2. H. praten'se, Huds. ; perennial, spike compressed, outer empty 

 glume setaceous scabrid. 



Wet meadows, &c., from Berwick southd. ; Ireland, local ; fl. June-July. 

 Eootstock creeping. Stems very slender, 1-2 ft., terete, scabrid above. 

 Leaves -y in., narrow, flat, at length involute, scabrid above, hairy 

 beneath, as are the narrow sheaths ; ligule very short. Spike 1-3 in., J J 

 in. broad, inclined, linear, yellow-green. Spikelets with the awns in., 

 rather spreading, scabrid all over, not ciliate ; fl. glumes terete, smooth, 

 about equalling the awn, obscurely nerved ; palea as long, acute, keels not 

 ciliate. DISTRIB. From Gothland to Spain and Kussia, N. Asia, N.W. 

 India, N. America. 



3. H. muri'num, L. ; annual, spike compressed, outer empty glume 

 of the mid spikelet lanceolate ciliate, of the lateral setaceous scabrid. 



Waybent, Barley-grass. 



Waste places, N. to Caithness; E. Scotland only ; Ireland, very rare ; Channel 

 Islands; fl. June-July. Root fibrous. Stems ascending, '6-18 in., smooth, 

 glabrous. Leaves small, narrow, scabrid ; sheaths inflated, glabrous ; ligule 

 very short. Spikes l|-2 in., stout, inclined, green. Spikelets 1 in., densely 

 imbricate ; empty glumes filiform ; fl. glumes lanceolate, flattened, much 

 shorter than the straight awn ; palea with distantly cili.ite keels. DISTRIB. 

 From Gothland southd. , N. Africa. VAR. arena'ria, Bab., is a form from 

 sandy places with the stem below branched and rooting. 



4. H. marit'imum, With. ; annual, spike subterete, empty glume 

 scabrid, upper of the mid. spikelet J -lanceolate, the rest setaceous. 

 Squirrel-tail Grass. 



Waste maritime localities, Durham to Kent and Devon ; absent in Wales ; Chan- 

 nel Islands ; fl. June. Stems 6-12 in., bent below, then erect, terete, smooth, 

 leafy. Leaves short, straight, narrow, flat, glaucous, scabrid ; lower sheaths 



