X *1V SYNOPSIS OF GENERA. 



lateral nerves not confluent, short, or produced into 

 teeth or distinct awns. {Wheat). 



Tbiticum, p. 68. 

 ** Spikelets solitary at the nodes, 1-flowered, forming a slend- 

 er spike, 



Spikelets completely immersed at the nodes of the slend- 

 er spike, as in Botthcellia. A very diminutive grass 

 found on sandy waste land. 



Obopetitjm, p. 69. 

 ### Spikelets 2 or more, collateral at the nodes. Spikelets 

 usually in threes, 1-flowered. 

 Empty glumes subulate, rigid and resembling an invol- 

 ucre. Lateral spikelets imperfect (in 2-rowed barley) or 

 perfect (in 6-rowed barley). {Vide Plate F., Fig. 32). 



Hobdeum, p. 69. 

 TKIBE XIII. Bambusese.— Tall perennial aborescent grasses. 

 Leaves flat, often disarticulating from the sheath. Spikelets 

 2-many-flowered, arranged in clusters on the panicle branches. 

 Empty glumes 3 — 6. Stamens 3 or 6. 



Stamens 6. Lodicules 3, large. Pericarp thin, adnate 

 to the seed. 



Bambtjsa, p. 70. 

 Stamens 6. Lodicules 0. Pericarp crustaceous, free 



from the seed. 



Dendbocalamtjs, p. 71. 



