11. DESCRIPTION OF PLATES. 



.MILLICM. a M. effusum, n. m. b Spikelet closed, e Spikclet open, d Ovary 

 iiuJ pistils. 



AMPIIICABPCM. / A. Pursbii, n. m. I Leaf. 3 Staminate flower, of the pan- 

 icle. $ Pistillate flower, of the root. 



PAXICUM. a P. agrostoides, n. m. b Spikelet e P, pauciflorum a. e Spike- 

 kt. d Fertile pales, x Neutral pales. 



OPLISMEXCS. o 0. Crus-galli, dim. a Spikelet m. 6 Spikelet of /? muticus. 



SETABIA. a S. viridis. 6 Spikelet m, with its bristly involucre, c Spikelet 

 of the same in flower, showing two of the bristles. 



CEXOHRUS. a C. tribuloides, the burr-like involucre, b Spikelet. e Pales in 

 fruit, d Pales in flower. 



PHALARIS. a P. arundinacea m. b Flower, and the 2 hairy rudiments at base. 

 c P. Canariensis, spikelet. 



ANTHOXANTHUM. a A. odoratum, spikelet m. b The 2 awned rudiments, e 

 The perfect flower, 2 pales, 2 stamens, 2 styles. 



HIEECCHLOA. a H. borealis, u. m. b Spikelet. c Same, with the glumes re- 

 moved, showing the 3 flowers. 



HOLCUS. a H. lanatus, n. m. b Spikelet m. c The two flowers separated 

 from the glumes. 



III. 



AIKA. c A. caespitosa n. m. a Spikelet b Flower, d A. flexuosa, spikelet 

 Q. m. e Part of the same magnified. 



DANTHOXIA. a D. spicata n. m. b Spikelet m. e Lower pale, d Upper pale. 



AVENA. a A. elatior, spikelet n. m. g Glumes. / Flowers, p A. praecox, 

 spikelet n. m. b Glumes, c Flowers. 



TBISETUM. a T. palustre, spikelet, am, 6 Same m. c Pales of the lowest 

 flower, p T. purpurascens, spikelet, u. m. g Glumes, d A flower, closed. 



BROMTS. * B. secalinus, apikelet, B. m. a A flower, 6 B. ciliatus, spikelet 

 before flowering, n. m. c A flower open. 



Tnicuspis. s T. seslerioides, n. m. a Spikelef. m Lower pale of flower, 

 n Upper pale, st T. stricta, spikelet enlarged 2 diameters. 



URALEPIS. a U. purpurea. n. m, 6 Spikelet m. c Lower pale, d Grain. 

 e Upper pale. 



DACTYLIS. a. D. glomerata, n. m. b Spikelet in flower. 



KOELEEIA. c K. cristata, D. m. a Spikelet. b Flower. 



DIARRHENA. a D. diandra, n. m. b Spikelet. e Flower. 



FESTCCA. a F. tenella, spikelet, n. m. b Same m, c F. nutans, spikelet, o. 

 m. d Flower. 



EATONIA. a E. obtusata. spikelet n. m. 6 Same m. c Lower flower, c? Upper 

 flower, with an empty pedicel. 



MELICA. e M. mutica, spikelet n. m, f Pales of a flower. 



IV. 



EtUGROsTls. A E. poaeoides, spikelet d. to. b Same in. c Pales of a flower. 

 d Grain, e E. hirsuta, spikelet n. m. / Same m. 



