250 PATAGONIAN EXPEDITIONS I BOTANY. 



(Arctic and temperate parts of N. Amer., Brit, and Br. i, 229.) 



H. JUBATUM PILOSUM Franchet. 



Leaves shortly hirtellate. Empty and floral ghmies scabrid. 

 Magellan, Punta Arenas ; Fuegia. 



H. j. COMOSUM O. Ktze. 

 Yellowish. 

 Patagon. 



H. j. MEDIUM O. Ktze. 



Versicolored. Awns 3-4 cm. long. 

 Patagon. 



H. j. NORMALE. 

 . Violaceous. 

 Patagon. 



6. H. MARITIMUM With. (H. chilense R. & S. nee Brongn.) 

 Root fibrous, cespitiferous. Culms erect, 10-22 cm. high, basally 

 geniculate, glabrous. Leaves narrow, glaucescent, smooth. Spike erect, 

 rigid, 25 mm. long. Lateral flowers male, short-awned, their inner 

 glumes lance-oblong at base, the other setaceous. 

 (Eurasia and Amer.) ; Argent. ; Patagon. 



7. H. MURINUM Linn. Wall-barley. 



Cespitiferous annual with fibrous roots. Ctilms basally decumbent, 

 becoming erect, 30 cm. high, smooth. Spike erect, dense, 5-7 cm. long, 

 many-flowered ; its rachis articulate, frail with rough angles. Flowers all 

 awned. Glumes of the mid-spikelet linear-lanceolate, ciliate, of the laterals 

 setaceous-scabrid. 



(Eurasia and Amer.) ; Patagon. 



H. M. VELUTINUM Speg. 



Leaves densely velvety on both surfaces. 



S. Patagon., in old cultivated lands by R. Sta. Cruz. 



8. H. PRATENSE Huds. (1762). Meadow-barley. (H. secalinum L. 



1771 ; H. nodosmn L. 1762.) 



Cespitose perennial with hard roots. Culms sterile and fertile, genicu- 

 late at base, 50 cm. high. Leaves usually smooth, linear, the ligules 



