38. 
3. Lemmas with 3 prominent nerves. 
4. Lemmas pubescent on the nerves and callus, the 
midnerve extended as a short awn. 
5. Palea densely long-ciliate on upper half 
of keel; panicle with few spreading, 
few-flowered branches; sandy beach habitat. 
Expected (Triplasis). 
5. Palea not long-ciliate on upper half of 
keel; panicle large and open; roadside- 
oldie Ered halbaitaltieleie e's aveleleie ole icles ciel hereccisehenmbGotodedia 
4, Lemmas not pubescent on the nerves and 
Callus, AWNLESS...ceceeccccrcscceecccrecceveseeos Hragrostis 
3. Lemmas with 5 to many nerves, these sometimes 
faint. 
6. Lemmas keeled. 
7. Spikelets with 1-4 empty lemmas below the 
FETE TELOTEES cicicrersiere s)/clc/oisisieieieisie cieelelsiersrsteieiciomUNTOla 
7. Spikelets with no empty lemmas below the 
fertile florets. 
8. Spikelets flat, nearly sessile, in 
thick 1l-sided clusters at the ends 
Of (SEPEE branches «cle cic oie sicie'e eieis'eicisleukele cl eere IDACt yds 
8. Spikelets only slightly flattened, not 
in l-sided clusters. 
9, Spikelets more than 1 cm. long; 
Hemma’s) AWN. sicrs srerclersiel si tialsicicichel sleilele sieielen Db OMUS 
9. Spikelets not more than 6 mm. long; 
lemmas AWNVESS'scis:s.0 clare sicls core el olelsele erete cia mEOR 
6. Lemmas rounded on back. 
10. Nerves of lemma prominent, parallel. 
(Also, glumes not papery; all florets 
alike; spikelets usually green)..........+.. Glyceria 
10. Nerves of lemma less prominent, converging 
toward the summit. 
11. Lemmas minutely bifid at apex, awned 
from between the teeth.......cece0e0eeeece+ Bromus 
11. Lemmas acute, awned from the tip or 
awnless. 
