Xvi 
Fia. 
ie 
18. 
39. 
40. 
LIST OF ILLUSTRATIONS 
Pace 
Holcus halepensis. Inflorescence and rhizomes, x 44; a terminal 
fertile spikelet with two staminate spikelets, X3 ........... 171 
Hilaria cenchroides. Plant reduced; group of spikelets, a 
staminate spikelet, a pistillate spikelet, x 5. (U. S. Dept. 
Agr. Div. Agrost. Bull. Now20) 0.25 622.) 12. sat oe eee eee 174 
. Paspalum dilatatum. Inflorescence, x 4; spikelet X5......... 179 
. Syntherisma sanguinalis. Plant, x 144; two views of spikelet, x5. 180 
. Panicum miliaceum. Inflorescence, x 2%; spikelet and fruit 
(fertile lemomia and palea), x 7... 05.0255 > 2. a ee 182 
. Echinochloa frumentacea. Inflorescence, x 4; spikelet, X5... 183 
. Chetochloa lutescens. Inflorescence, x 34; spikelet with sub- 
tendine bristles; X52 be os da debe va Sob ye 184 
. Chetochloa italica, Hungarian-grass. Inflorescence, K 34 ...... 185 
. Cheetochloa italica, common millet. Inflorescence, x 14; fruit x 5. 185 
. Pennisetum glaucum. Inflorescence, X 14; spikelet with in- 
volrcre of bristles, < 5. ..e.5 3. kbs oc eee eee ee 186 
. Cenchrus carolinianus. Upper portion of plant with inflor- 
escence, >< 39; spikelet, X 7.....0650. 40.0.0 2sn 5 oe a 187 
. Stenotaphrum secundatum. Upper portion of culms with 
inflorescence, 14; spikelet,; 5 oi... oc. we ee bg os a 188 
. Pharus glaber. Plant reduced; branchlet of inflorescence with 
a sessile pistillate and pedicelled staminate spikelet, and a 
fertile floret. (U.S. Dept. Agr. Div. Agrost.,Bull No. 20)... 189 
. Oryza sativa. Inflorescence, X 14; spikelet, X3.............. 191 
. Zizania palustris. Inflorescence, much reduced. (U. 8S. Dept. 
Agr. Div. Agrost. Bull.. No. 34)e:.. oo 5 0G. i< ee ee 191 
. Anthoxanthum odoratum. Inflorescence, x 1; spikelet, the two 
sterile lemmas and the fertile floret, X 5..............2020- 192 
. Phalaris arundinacea. Inflorescence, X 4%; spikelet and fertile 
i(c) 92) aD Gi ho Dian een eMen OE eke SR 193 
. Phalaris canariensis. Inflorescence, X14; glumes and fertile 
floret with the pair of sterile lemmas, * 5.................. 194 
. Aristida longiseta. Spikelet, the fertile lemma raised from the 
layne XK 1s oo oa on ken oe we wie bvelw bie 3 eo Ole ae 199 
. Stipa spartea. Mature fertile lemma (fruit) with twisted awn, X1. 200 
. Muhlenbergia gracilis. Plant, x14; spikelet, the floret raised 
from the glumes; glumes and floret. (U. S. Dept. Agr. Div. 
Bot. Bull, No. 26)... 35s 3. eee ew oe Boe ee 201 
. Phleum pratense. Inflorescence, X 4%; glumes and mature 
POTEG OS oo ois an 5 spn nen wipe win Gow mre wa pee ere 202 
Alopecurus pratensis. Plant reduced; spikelet and floret. 
(U..8. Dept. Agr. Div. Agrost. Bull. No. 20).......°.seeaus 203 
Agrostis alba. Inflorescence and rhizomes, X%4; spikelet, x 5.. 204 
