MACLOSKIE I GRAMINE^E. 205 



smooth, elongate. Glumes lanceolate, the lower longer and 3-nerved. 

 Flowers 2, enclosed in hairs, not exceeding the glumes. Rachilla rough, 

 produced. Floral glume 3-4-toothed, with straight submedian awn not 

 exceeding the glumes. (Fig. 39.) 



Patagon., Churucca; Fuegia to Cape Horn. 



5. T. FRAUDULENTUM Steud. 



Glabrous throughout ; culm 90 cm. tall ; leaves lanceolate, their sheaths 

 lax, shorter than the internode, ligules exserted, oblong, cleft. Panicle in 

 upper spathe-like leaf, sometimes protruding. Spikelets 2-flowered ; the 

 glumes unequal, the lower ovate, twice as long as the lanceolate upper. 

 The upper flower with hairy pedicel. Awn twice as long as its glume. 



(The pediceled flower is easily deciduous, leaving its pedicel as in 

 Calamagrostis. ) 



S. Patagon., by Rivers Gallegos and Sta. Cruz; Magellan. 



6. T. REPENS (L.) MAGELLANICUM Desv. ( T. glaucum d'Urv.) 

 Creeping. C^llms 49-90 cm. long. Ligules short, toothed; leaves 

 plane or convolute, scabrid inside. Panicle spike-like, 8-15 cm., green 

 Spikelets erect, lax, oblong-elliptical, compressed, 12-16 mm. long, 3-4-. 

 flowered. Empty glumes subequal, as long as the spikelet, oblong-ellip- 

 tical, convex, 4-6-nerved, muticous or mucronate, inequilateral, erose- 

 toothed, scabrid outside. Floral ghime 5-nerved, oblong-elliptical, awned 

 or not, dorsally scabrid. 



Magellan ; Port Gallaret : Puerto del Hombre. Ushuaia. Falklands. 

 T. SECUNDUM Kth. Mts. of Fuegia. 



7. T. SPICATUM Richter; (Aira s\ of L. T. subspicatum Beauv.) 

 Tufted, 1 0-60 cm. high; sheaths pubescent, 3 cm. long, ligules scarious, 



blades flat. Panicle spike-like, interrupted, silvery or purplish, 3-10 cm. 



long. Spikelets flattened, 2-3-flowered, produced rachilla as a bristle or 



a glume. Empty glumes about 5 mm. long, sublanceolate ; Jloral glume 



as long, its awn varying in length. 



(Fig. in Brit. & Br. i, 171. Eurasia by Arctic regions to N. Amer. and 



to Andes of Peru; also in Australia, N. Zeal., Campbell's I.) Falklands; 



Magell., Fuegia to Cape Horn. 



"Its great abundance in the New World, and especially in the extreme 



south of America, coupled with its rarity in the southern regions of the 



