96 
c. Spikelets two- to many-flowered. 
a. Glumes about as long as or longer than the spikelet; pale with a bent 
awn from the back (Avene). 
1, Ralespbidentateru acim aie omecietc Cenc an- enone 9. Trisetum. 
2. Pales erose-dentate or entire. 
§ Glumes much longer than the flowers ........ 10. Vahlodea. 
§§ Glumes about as long as the flowers...........% 11. Aira. 
6. Glumes shorter than the spikelets (except Dupontia); pale without awn 
or with an awn at the apex (Festucee). 
1. Glumes longer than the spikelet.............. 13. Dupontia. 
2. Glumes shorter than the spikelet. 
§ Pale one- to three-veined. 
‘Te banicledspixecItlkxemnimencacte euch shan etch eens metnane 14. Koeleria. 
+ Panicleispreading, pyramidal... .... 1. 04 « 15. Catabrosa. 
S§ Pale three- to many-veined. 
+ Palet with two sete on each side...... 16. Pleuropogon. 
+t Palet without sete. 
* Veins on the pale nearly parallel. Pale rounded on the back. 
/ Glumes nearly as long as the lower flower. Pale with 
Beobscure: Veins ss ave ce tietpsdedens «vere 17. Arctophila. 
// Glumes shorter than the lower flower, Pale with 5—7 
evidentiveinsiue -aonctans ere imme acnee 19. Glyceria. 
** Veins on the pale converging. 
/ Pale rounded on the back. .....5.... 20. Festuca. 
// Pale compressed, keeled on the back. 
op Paleswithout awiiemacmemeactel he aetna 18. Poa. 
oolsPale rawned! "29 acy eer eey | cre eke 21. Schedonorus. 
B. Spikelets in two rows, forming one-sided spikes in a one-sided spike-like or 
MARLOW spaniclen(GHlOnidede) unr cec semen etme nee Monnet otiene 12. Beckmannia. 
C. Inflorescense spike-like (Hordeae). 
a. Spikelets in two rows on one side of the rachis......... 22. Nardus. 
b. Spikelets solitary or 2—3 together, on opposite sides of the rachis. 
ay Spikelets solitaryarteus) sacncach-e- ee nes eps Sas een oo AQ RODY RUM = 
B Spikelets two or morevat each mode -..........-.. 24. Elymus. 
1. ANTHOXANTHUM L. 
152. A. odoratum L. 
Lge. Consp. Fl. Groenl. p. 157; Ledeb. Fl. Ross. IV p. 408. 
Culm erect. Panicle spike-like, ovate-lanceolate, dense or inter- 
rupted below. Lower glume half as long as the upper one. Spike- 
lets with two sterile flowers below, with ciliate pales, the lower 
with a geniculate awn about as long as the upper glume, the upper 
with a short straight awn; the third, uppermost flower fertile; 
anthers two. 
Plant with smell of Coumarin. 
Am.: West Greenl. 60° 43’—61° (!). Eur.: Samoyede Land. 
Geogr. area: North America (introduced), Iceland, Ferées, Europe, 
North Africa, Caucasus, Northern Asia. 
