MACLOSKIE I GRAMINE^E. 229 



IQ. P. MAGELLANICA Phil. 



Female specimens in the Spegazzinian Herbarium are identical with P. 

 patagonica Ph. 



Magellan (Spegazzini); Fuegia. 



20. P. NEMORALIS Linn. 



Culms erect, 50 cm. tall, slender, glabrous. Leaves 7 cm. long, 2 mm. 

 wide ; their sheaths shorter than the internodes ; ligules truncate. Panicle 

 open, its rays erect or ascending. Spikelets 2-5-flowered, 3-5 mm. long ; 

 floral glume webby at base, the nerves silky below. 



(Brit. & Br. i, 205. Eurasia and N. Amer. to Rocky Mts.) Magell.; E. 

 Fuegia. (Dusen.) 



21. P. FALLENS Poir. 



Ctdm compressed, glabrous, smooth, 60 cm. high. Leaves narrow, 

 acute, very long, smooth. Panicles 15-20 cm. long, the rays verticillate, 

 numerous, very rough. Raylets filiform. Spikelets compressed (pale 

 yellow), shining, about 12-flowered. Floral glumes acute, transparent, 

 with membranous margin. 



(Argentina) ; S. Patagon., by Rio Sta. Cruz.; Chubut, "more slender, 

 elongate, the panicles more narrowly linear, elongate, erect and somewhat 

 rigid." (Speg.) 



22. P. PATAGONICA Ph. 



(Dioicopoa.] Stoloniferous and glabrous, 30-60 cm. tall, with 3 nodes. 

 Leaves convolute-filiform, coriaceous, scabrous-tipped, shorter than the 

 culm ; ligules long, 2-partite. Panicle 55-80 mm. long, spike-like, lobed, 

 violet-yellow, the rays spiculiferous from the base or middle. Spikelets 

 8 mm. long, 5-8-flowered ; glumes 4 mm.; floral glumes long, 5-y-nerved, 

 glabrous ; palea three fourths as long. 



By S. Patagon. 



23. P. PRATENSIS Linn. 



Culms 60 cm. tall, smooth; leaves 10 cm. long by 1-6 mm. wide, basal 

 leaves longer, their sheaths exceeding the internodes; ligules truncate, 

 more than i mm. Panicle pyramidal, its rays ascending, dividing and 

 spiculiferous above the middle. Spikelets 3-5-flowered, 4-5 mm. long, 

 exceeding the pedicels. Floral glumes webbed at base, but naked be- 

 tween the nerves. 



