TRIANDRIA. 
87 
MEL'ICA. ( Florets one or two, with the rudiments of one or 
two intermediate ones: Seed coated with the hardened 
blossom. E.) 
SESLE'RIA. Involucr. two-leaved: Cal. two-valved, with 
one to three florets : Bloss. outer valve tridentate ; inner 
valve bidentate : Styles combined. E.) 
[Avena elatior, flavescens, fatua. Cynosurus. Dactylis glome- 
rata.] 
(3) Grasses. Flowers scattered, several in each calyx. 
BRI'ZA. Cal. two-valved : Bloss. heart-shaped, valves blunt, 
tumid : ( Seed depressed, attached to the blossom. E.) 
POA. Cal. two-valved: Bloss. egg-shaped, valves rather 
acuminate, (awnless : Seed free, covered by the blos¬ 
som. E.) 
(TRIO'DIA. Bloss. orbicular, expanded, obscurely ribbed, 
deeply cloven, with an intermediate point; both valves, 
concave: Seed loose, depressed. E.) 
FESTU'CA. Cal . two-valved: Bloss. oblong; valves sharp- 
pointed. 
BRO'MUS. Cal- two-valved : Bloss. oblong; outer valve with 
an awn fixed below the point. 
AVE'NA. Cal. two-valved: Bloss. oblong; valves with a 
jointed awn. 
ARUN'DO. Cal. two-valved: Bloss. awnless, woolly at the 
base. 
£Daclylis glomerata. Melica caerulea, Aira aquatica.] 
(4) Grasses. Flowers forming a spike, on a long and slender receptacle . 
TRITICUM. {Cal. two-valved, solitary, mostly three-flowered; 
spike stalky, flexuose, toothed. E.) 
HOR'DEUM. Involucrum six-leaved, containing three florets : 
Flowers simple. 
ROTTBQI/LIA. Cal. egg-spear-shaped, compressed, simple 
or with two divisions: Florets alternate, on a flexuose 
fruit-stalk. 
E LYMBS. Involucrum four-leaved, two-flowered: Flowers 
aggregate. 
LO'LIUM. Involucrum one-leaf, containing a single many 
flowered spiket. 
