236 
INDUSTRIAL PLANTS 
ho ht 
believed to have been derived. B, flowering top of a cultivated form 
(var. vulgaris) which differs from the form used for brooms (var. 
technicus)mainly in having a more compact flower-cluster. Bo’, BQ, 
staminate and pistillate spikelets, enlarged. D, bract. K, fruit. 
G, lodicules. (Reichenbach.)—Annual 2-3 m. tall; stem solid; flowers 
concealed by bracts; fruit a grain. Native home, Mediterranean 
Region (?). 
