MACLOSKIE: GRAMINE/E. 241 



ered, lax ; the paired rays of each semiverticil bearing on their upper half 

 few acute spikelets ; pedicels nearly equalling the spikelets, rough, grad- 

 ually thicker. Spikelets to 27 mm. long, 4-5-6" owered ; glumes 3-nerved, 

 ii mm. long, the upper a third larger; fioriglume 13 mm. long, y-nerved, 

 margin broad, scabrous, hyaline, awn 5 mm. 



In Andes of Chilian (Spegazzini) ; its lower leaves 5 mm. broad ; lig- 

 ules 5 mm. long. Differs from B. hcenkeanus by its acute, 4-5-flowered 

 spikelets. 



B. ANDINUS SCABRIVALVUS Speg. 



Glumes minutely appressed-pubescent. 

 Chubut, by Lago Fontana. 



2. B. COLORATUS Steud. 



Rhizome woody. Culm jointed at the base, stout, i meter high, striate, 

 glabrous. Leaves lanceolate, 15-30 cm. by 1-4 mm., rough-edged ; the 

 ligules ovate, toothed. Panicle 30 cm. long, its rays semi-verticillate, 

 rough, naked at base, i-3-spiculate. Spikelets compressed, 5-y-lax-flow- 

 ered, violet to whitish, variegated. Glumes shorter than the lowest flower ; 

 floral glume glabrous, shortly awned below its apex. 



Magellan, Punta Arenas ; Fuegia, south of Navarino I. 



B. COLORATUS VIVIPARUS Steud. 



Differs from the species by having spikelets green, few-flowered, very 

 large (40-50 mm. by 10 mm. ) ; flowers awnless, the lower sterile, the 

 upper viviparous. 



Fuegia, by borders of woods. 



3. B. HACKELI (Hack.) Macl. (B. patagonicus Hack, nee Phil.) 



Culm erect, i meter high, stout, glabrous, its few nodes crowded below. 

 Sheaths close, the lower pubescent ; ligules ovate, 3-4 mm., erose ; leaf- 

 blades linear to 12 cm. by 4 mm., glabrous. Panicle oblong, rather simple, 

 to 1 8 cm. long ; its rays paired, rough, 2-spiculate. Spikelets oblong, 2 

 cm. long, compressed, mixed green and violet, 4-6-flowered. Empty 

 glumes slightly unequal (10-12 mm.), lanceolate, 3- and y-nerved, keels 

 rough ; floral ghtme lanceolate, acute, 16 mm., y-nerved, shortly awned ; 

 palea as long, its keels spinulose-ciliate. Ovary 3-horned. 



So. Patagon. (O. Nordenskjold.) 



