MACLOSKIE I GRAMINE^E. 219 



onal, 6-i2-flowered. Floral glumes 3-lobed, the mid-lobe long, 9-nerved. 

 (Brazil) ; N. Patagon. 



50. PANICULARIA Fabr. (Glyceria R. Br.) 



Leaves flat or involute, and panicle narrow or spreading. Spikelets 

 few- or many-flowered ; the empty glumes 3~5-nerved ; the floral glumes 

 3~9-nerved, longer, obtuse, convex or dorsally flat, the nerves short; 

 palea as long as its glume ; no awns. Grain grooved, glabrous, enclosed 

 but free. Leaves mostly glabrous (except P. flidtans}. 



Species 30, in temperate and some warm regions. P. fluitans R. Br. 

 extends through the N. temperate parts of both hemispheres, and Aus- 

 tralia. (Brit. & Br. i, 213.) 



I. P. ANTARCTICA (Speg.). 



Creeping, glabrous. Culms sheathed above the mud, the sheaths loose. 

 Leaves few, plane, the lower floating, the ligules long-triangular. Panicle 

 exsert, very lax ; the rays whorled, remote, bearing few spikelets ; these 

 ovate, 2-flowered, compressed ; lower glume half as long as the upper. 

 Base of flower with a few long hairs. 



Staaten I. and S. Fuegia. 



2. P. FLUITANS (L.) Kuntze. Floating Manna-grass. 



Ctilms a meter high or more, flattened, stout. Sheaths loose. Leaves 

 12-30 cm. long, wide, scabrous, often floating. Panicle about 30 cm. 

 long, rather appressed. Spikelets linear, y-13-flowered ; glumes unequal, 

 i-nerved; fo&florigiumc scabrous, y-nerved, its apex erose. 



(Eur. and N. Amer. by water) ; Patagon., by Lago Colu-huapi and Rio 

 . Carren-leofu. 



3. P. FUEGIANA (Speg.). 



Creeping, glabrous ; culms sheathed to top, the sheaths large, striate ; 

 leaves few, flaccid, erect, the lower sometimes floating ; their blades plane, 

 linear, acute ; ligules exsert, ovate, toothed. Panicle long, exserted from 

 the sheath, at first linear, afterwards lax; spikelets remote, peduncled, 

 linear, 3-flowered; glumes glabrous, the lower obtuse, the upper acute 

 and twice as long. 



Magellan, by fresh water, near Gregory Bay. 



