106 Mr. F. Townsend on a supposed new species of Glyceria. 
upwards, wavy and twisted above, and frequently with a swollen 
appearance. Leaves _plicate, rather obtuse, more flaccid and 
of a darker green than in the other two species; sheaths sul- 
cate, rough ; ligule obtuse, apiculate, obscurely three-toothed or 
entire. Panicle often drooping, not so elongate as in either of 
the above; clusters arranged at shorter distances; branches 
often spreading in all directions from the twisting of the rachis, 
uppermost crowded, a single branch often bearing sixteen or 
more spikelets, two branches of each of the lowermost clusters 
bearing several spikelets; spikelets shorter than in either of the 
above, uppermost spikelets of the branches and rachis sessile or 
upon short rigid pedicels; pedicels always scabrous. Florets 
smaller than in either of the above. Inner pale rather shorter than 
the outer. Anthers purple, sometimes yellow. Careopsis round- 
ish-elliptical, and at once distinguishable from that of G. fluitans, 
which is linear-elliptical. 
It flowers from June to September, sometimes bearing a se- 
cond crop late in the year, and is of frequent occurrence. It 
grows in stagnant and running water. This is the G. plicata 
(Fries), ‘Herb. Normale Suec.’ fase. 5. No. 91, and is thus proved 
to be the plant described under that name by him. 
Glyceria fluitans may at once be distinguished by its even 
sheaths, those of the other species under consideration being 
sulcate. G. pedicellata may be known from G. plicata by its 
spikelets being much longer and florets larger, its panicle simple 
and elongate, ¢ one branch only of each cluster beari ing more than 
one spikelet, and the whole plant of a lighter green and more 
wire-like. A common observer might at a glance distinguish 
the plants by these characters. 
The character of the inflorescence in G. pedicellata appears 
constant, whilst in the other plants it is variable, and for this 
reason I have noticed varieties derived from the form of inflo- 
rescence. By a compound panicle I understand that the main 
branches develope other branches upon which the spzkelets are 
arranged, and the panicle is thus twice compound ; in the simple 
panicle the pedicels of the spikelets spring directly from the main 
branches. 
The name pedicellata has been chosen in consideration of the 
pedicels of the spikelets being longer and more decided in that 
plant than in the others, which have frequently quite sessile 
spikelets. 
I have met with no description of G. pedicellata. From its 
having somewhat intermediate characters, it has probably been 
confounded both with G. fluitans and G. plicata. With regard 
to published figures, of which there are many, I will venture a 
few remarks. The figure given by Reichenbach (Icon. Fl. Germ. 
