700 EXPLANATION OF THE PLATES. 



GYMNOPOGOX. — Inflorescence of G. racemosus, reduced in size (1); and a mag- 

 nified spikelet with the parts disphiyed (2). 



CYNODON. — Inflorescence, of digitate spiives (1); a spikelet magnified and dis- 

 played, showing a perfect flower and a nidinient (2). 



DACTYLOCTENIUM.— Inflorescence of I), ^jxyptiacum, of digitate spikes (1); 

 one of the spikelets magnified (2) ; the fruit magnified (3), showing tiie seed 

 loose in the thin pericarp (utricle); and (4) the wrinkled seed more magnified. 



ELEUSINE. — One of the spikes from the digitate inflorescence of E. Indicu(l); 

 a magnified spikelet (2); the same witli the flowers more displayed (3); a 

 flower from the last showing its parts (4); the fruit magnified, showing the 

 seed loose in the utricle (5); and the wrinkled seed detached (G). 



LEPTOCHLOA. — Small portion of the inflorescence of L. fascicularis (1); one of 

 its spikelets displayed and magnified (2) ; au open flower of the same (3). 



Tab. X. 



TRICUSPIS. — Magnified spikelet of T. seslerioides (1); the same displayed and 

 the lowest flower open (2); back view of the lower palets spread out (3). 



GRAPHEPHORUM. — A magnified spikelet of G. melicoides, displayed (1); a part 

 of the hairy rhachis and one flower of the same (2). 



DIARRHENA. — A spikelet of D. Americana, enlarged (1); the grain and palets (2). 



DACTYLIS. — A spikelet of D. glomerata magnified and displayed. 



KOELERIA. — A magnified spikelet of K. cristata, expanded, showing the glumes, 

 the three flowers, and a rudiment (1); lower half of a lower palet| partly 

 spread open (2); it is much more folded and keeled in its natural condition. 



EATONIA. — A magnified spikelet of E. obtusata, expanded, showing the glumes^ 

 the two flowers, and a rudiment. 



MELIC A. — A magnified spikelet of M. mutica, expanded, showing the glumes, two 



perfect flowers, and an abortive one. 

 GLYCERIA.— A magnified spikelet of G. nervata (1); a separate flower with one 



joint of the rhachis (2); and (3) the lower half of a lower palet, showing it& 



form (rounded on the back, not keeled.) 

 BRIZOPYRUM. — A pistillate spikelet of B spicatum, enlarged (1); a flower from 



the same (2); and a flower from a staminate spikelet (3). 

 PDA. — Panicle of P. compressa, reduced in size (1); a magnified spikelet (2); a 



separate flower more magnified (3) ; a lower palet cut across and somewhat 



outspread (4). 

 ERAGROSTIS. — A spikelet of E. pilosa, enlarged (1); the same, from which 



the glumes and all of six lower flowers except the upper palet have fallen 



away (2); a magnified flower, open (3); the lower palet of the same out- 

 spread (4). 

 BRIZA. — A spikelet of B. media, enlarged (1); a separate flower (2). 

 FESTUCA. — A spikelet of F. elatior, enlarged (1); a separate flower (2); lower 



part of a lower palet, outspread (3). 

 BROMUS. — A spikelet of B. secallnus, or Chess (1); and a separate flower, 



enlarged (2). 



Tab. XI. 



UNIOLA. — A spikelet of U. latifolia, of about the natural size (1); a flower, en- 

 larged (2) ; empty lower palet of the lowest (sterile) flower (3). 



PHRAGMITES.— A spikelet of P. communis, enlarged (1); one of the perfect 

 flowers, enlarged (2); and the lowest flower (3), wiiich has stamens only. 



ARUNDINARIA. — A spikelet of A. macrosperma (1); and a separate flower, mag- 

 nified (2). 



LEPTURUS. — Portion of the spike of L. paniculatus, enlarged (1); and a flower 

 magnified (2). 



