368 



WEEDS AXD USEFUL PLANTS. 



The above cuts represent in detail ttiree different forms of tiie inflorescence of grasses. Fig. 

 248. A spikelet of a one-flowered grass, a Tlie lower, and h the upper glume, c The lower 

 palea. d The upp?r palea having two nerves, e The stamens and pistil, the latter with 

 two plumose stigmas, and two scales at its base. Fig. 249. Spikelet of a three-flowered 

 grass (Anthoxanthum) with one flower only fertile. The parts separated and placed iu 

 their relative position below, a and & The lower and upper glumes, c and d The im- 

 perfect florets, each of a single awned palea. e Lower palea of the perfect flower. 

 /Upper palea of the same, The two stamens, /i The pistil. Fig. 249.' A spikelet of a 

 several-flowered grass, a and h Lower and upper glumes, c d and e The flowers placed 

 oa alternate sides of a short stem or rachis. /A terminal abortive floret. 



