26 Mr. Woops on the Genera of European Grasses. 
outer palea of the perfect floret being always within the outer glumes. The 
glumes are large, nearly equal, completely inclosing the florets. I have ad- 
mitted amongst them Zea and Lygeum without being able to give a good 
reason for doing so. The latter especially seems to me to have little relation- 
ship to the rest of the tribe; but I follow Kunth, since I know not where to 
place them better. 
1. Phalaris. Glumes navicular, carinate, herbaceo-membranous, including. 
External florets, scale-like, neuter. 
the seed. 
2. Anthoxanthum. Glumes membranous, including. External florets neuter, 
each of one large palea, both of them awned. Perfect floret diandrous. 
Paleæ scariose. 
Pale coriaceous, closely investing 
3. Hierochloa. Glumes membranous, thin. External florets triandrous. Per- 
fect floret diandrous. Paleze firmer than the glumes. 
4. Zea. Barren florets 2 ina spicula, disposed in a terminal panicle. Fertile 
floret 1 in each spicula, with external abortive rudiments disposed in a 
dense lateral spike. 
5. Lygeum. Glumes 0. Spiculæ all fertile, in pairs or threes, uniting at last 
to form a 2- or 3-seeded nut. 
Puataris has in most species two small fleshy scales at the base of the per- 
fect floret, often tipt with hairs, 
Seren and I think I can sometimes discern traces 
of a filmy interior palea. In P. 
canariensis the additional floret is larger and 
E like the paleæ of the perfect floret both in size and substance than it is 
in any other European species. 
I have no hesitation in considerin 
the g the parts which used to be described as 
ofa De m as abortive florets, because I think the presence 
be an interior palea. ni * ka strong proof that the upper of these cannot 
hac wit: d P Ibis genus and HEnOCHLOA I am quite disposed to 
P e Phalaridee ; but I find it more difficult to say why ARRHENA- 
TH 
xeu: cem also be placed amongst them. It has, however, only one 
barren floret, without any rudiment or indicat 
floret is USE ion of a second, and the fertile 
EE es placed within the superior dius n = . 
danken attributes to it the filiform rudiment of a superior floret, which is not 
