GARDEN BOTANY. 



H. VUlgare, COMMON BARLEY. All three spikelets producing a fer- 

 tile awned dower and a subulate rudiment, the spike therefore six-rowed or 

 four-rowed. 



H. distichum, TWO-ROWED BARLEY. Lateral spikelets at each joint 

 sterile and avvuless, the middle one alone fertile and awned. 



6. Oryza sativa, RICE. Annual, rough-leaved ; spikelets in an open pani- 

 cle, one-flowered, very much flattened contrary to the short glumes and hard 

 and rough palese, which are conduplicate ; the latter firmly enclosing the 

 grain, the lower one awned or awnless. Cult, southward. 



7. Stipa pennata, FEATHER GRASS, of Europe, is occasionally raised in 

 gardens for ornament, the awn of the flower being several inches long and 

 beautifully plumose, instead of naked, as in the wild species, Man. p. 549. 



7. Sorghum VUlgare, SORGHO, DODRRA, GUINEA CORN, &c. Stem 

 solid, tall; leaves broadly linear-lanceolate; flowers in an ample terminal 

 panicle, short-awned or awnless. BROOM CORN is a variety of this species, 

 with long branches to the large and open panicle, which is made into brooms. 

 SUGAR SORGHUM is a form of the same with sweeter steins, a northern sub- 

 stitute for Sugar-Cane. GUINEA CORN, or DOURRA, the original cereal grain 

 of tropical Africa, has the panicle densely contracted and the grain larger. 



9. Avena sativa, COMMON OAT. Annual, with a loose panicle of very 

 large and drooping two-flowered spikelets ; paleae enclosing the grain, that of 

 one flower with a long and twisted awn on the back, the other awnless. 



10. Briza maxima, GREAT QUAKING-GRASS. Annual, resembles B. media 

 of Man. p. 565, but the spikelets are larger, over half an inch long, and very 

 turgid : occasionally cultivated in gardens for ornament. 



