165 
BARLEY.— 
a, A group of 3 spikelets, the lateral ones raised on short Fie b, the cen- 
tral oret; ¢, an expanded mgt eats Other species of Hordeum are illus- 
trated by y figs. 603 to 610, in Bul. 1 
133. HORDEUM Linn. Sp. Pl. 84. 1753. Spikelets 1- flowered, 2 to3 together 
at each joint of the articulate rachis, sessile or on very short pedicels; rachilla 
Fie. 133. ee boreale Scribn. &Smith. NORTHERN WILD B 
| _ articulated above the empty glumes and continued behind the palea of the 
| : 
central spikelet into a naked bristle some’ bears the rudiment of 
a 2d floret. Empty glumes 2, narrow-lanceolate, subulate or , rigid, 
t; flowering glumes lanceolate, m the back, obscurely 
above, at ; palea shorter glume; 2-keeled. Sta- 
mens 3. Styles short, distinct. O hairy at the : 
adherent to the palea. Lateral spikelets usually imperfect and raised above 
terminal cylindrical 
1d awned spikelets. : 
Species about 16, in both hemispheres. 
