612 PO^CE^. 



mm. long, second oval, acute, 7-nerved, 12 mm. long; floral glume 

 scabrous, compressed, elliptical, acute when spread, 11-nerved, 

 about 20 mm. long, awn 4-8 mm. long; palea narrowly elliptical, 

 2-tootlied, keels pectinate-ciliate, 14 mm. long. 



An incomplete specimen examined. The spikelets resemble 

 those of B. unioloides, though larger. 



Alaska, M. W. Harrington in 1871-2. 



4. B. MADRiTENSis L. Cent. PI. 1:5 (1755). B. ciliaius 

 Huds. Fl. Angl. Ed. 1, 40 (1762). B. muralis Huds. PI. Angl. Ed. 

 2, 1:50 (1778). B. gijnandrus Eoth. Eoem. & Ust. Mag. 4:20 

 (1790). /)'. rmdtispicatus R. & S. Syst. 2: 650 (1817). B. diandrus 

 Curt. Fl. Loud. fasc. 6: ?". 5 (1828). B. polystachyus DC. Fl. Fr. 

 6:276. 



A soft erect slender annual, 20-40 cm. high, from a genicu- 

 late base. Sheaths longer tlian tlie internodes; ligule entire, ob- 

 tuse, nearly 2 mm. long; blades of the culm 5-6, scabrous, 7-10 

 cm. long, 2-3 mm. wide. Panicle oval, compressed, 5-10 cm. 

 long, rays scabrid, mostly in threes or fours, the longest about 3 

 mm. long, not including the spikelets. Spikel.ets dull green, 7-10- 

 flowered, joint of rachilla 3 mm. long; first glume slender, 1- 

 nerved, about 10 mm. long, second linear-lanceolate, 3-nerved, 

 about 15 mm. long; floral glume linear-lanceolate, 7-nerved, about 

 18 mm. long, including the two slender points, awn 20-25 mm. 

 long; palea linear, pectinate-ciliate, 14 mm. long. 



Michigan, //. E. Owen 137, Bcal 138; California, Parish 1904; 

 southern California, Parish. 



Introduced from Europe. 



5. 1^. iNERMis L. Mant. 2:186 (1767). Awnless Brome 

 Grass. Festnca inermis DC. Fl. Fr. 3:49 (1805). B. ercctns 

 Ledeb. Fl. Ross. 4:358 (1853). 



A rather coarse erect perennial, 60-120 cm. higli. with creep- 

 ing rootstocks. Sheaths striate, smooth or pilose; ligule truncate, 

 lacerate, 1 mm. long; blades scabrous or j^ilose, flat, 10-20 cm. 

 long, 6-10 mm. long. Panicle oval, erect, 12-18 cm. long, rays 

 in fives and sevens. Spikelets 5-9-flowered, 2-3 cmj. long, rachilla 

 pubescent, first glume 1-nerved, 5-6 mm. long, second 3-nerved 



