MACLOSKIE: GRAMINE^E. 247 



A. MAGELLANICUM LASIOPODUM Speg. 



Green, not rigid. Spikelets slender ; pedicels very short, densely silky- 

 bearded. Glumes hirsute, acute, awned, as long as the rough flowers. 

 Lowest leaves pubescent. (Perhaps a distinct species.) 



S. Patagon., by Rio Sta. Cruz. 



A. MAGELLANICUM SECUNDUM (Presl). ( Tritictim secundum Presl.) 



Root creeping. Culm basally ascending, then erect, covered by "sheaths 

 and with glabrous nodes. Margin of ligule narrow; leaves involute, 

 scabrid. Spike secund, erect, dense, 10 cm. long; rachis semiterete ; 

 spikelets 3-flowered. Glumes lanceolate, rather shorter than the spikelets, 

 y-nerved, mucronate, scabrid, as is the 5-nerved floral glume. Awn 

 not as long as the floral glume. Perennial. 



(Chili); S. Patagon., by Rio Chico de Sta. Cruz; Magellan; Fuegia. 



4. A. PUBIFLORUM Steud. 



Root long-fibrous (scarcely creeping) ; citlm jointed at the base, thence 

 or entirely erect, 60-90 cm. tall, terete, glabrous. Sheaths striate, gla- 

 brous (the lowest slightly violet); ligules short, hyaline, obtuse, denticu- 

 late. Leaves narrow-linear, subsetaceously-attenuate, smooth, glabrous, 

 10-25 cm - long- Spike long, erect, to 15 cm., rather distichous. Spike- 

 lets 5-7-flowered. Glumes lance-ovate with hyaline-membranaceous mar- 

 gin, acute, 3~5-nerved, rough on the nerves. Rachis angular-setulose. 

 Flowers distinct; floriglume puberulous all round, ciliolate, 5-nerved, 

 long-acuminate (not awned). Palea as long, narrower, its keel ciliolate. 



Magellan ; Cabo Negro ; Rio Gallegos ; common through Fuegia. 



5. A. REPENS (Linn, sub Triticum] Beauv. Couch-grass. 



Rootstock long, jointed. Culm 30-120 cm. tall; sheaths glabrous; 

 leaves 20 cm. by 5-10 mm., rough on upper surface, their ligules short. 

 Spike strict, 6-20 cm. long; spikelets 10-20 mm., 2-5-flowered, the mid- 

 flowers overlapping. Empty glumes unsymmetrical ; floral glume 10 mm. 

 long, cuspidate or shortly awned. 



Many varieties, from differences in size of spikelets, in forms of glumes, 

 etc. (Brit. & Br. i, 226.) 



(Eurasia, N. Afr.; nat. in N. Am. A mischievous weed in cultivated 

 lands.) Patagon.; Magell.; Fuegia to Cape Horn; Falklands. 



