Hitchcock — TIic Grasses of Hawaii 113 



Hawaii : Puu A\'aa\vaa, Hitchcock 14464. Parker Ranch, ^Nlakahalau, Rock 8407. 

 Kukaiau Ranch, 3600 feet, Hitchcock 14211. 



2. Bromus hordeaceus L. Sp. PL jj. 1753. 



Culms 20 to 60 cm. tall: sheaths retrorsely softly pilose-pubescent; blades usually 

 pubescent ; panicle contracted, erect, 5 to 10 cm. long or in depauperate plants reduced to a few 

 spikelets ; glumes broad, obtuse, coarsely pilose or scabrous-pubescent, the first 3 to 5-nerved. 

 4 to 6 mm. long, the second 5 to 7-nerved, 7 to 8 mm. long; lemmas broad, obtuse, 7-nerved, 

 coarsely appressed-pilose or scabrous-pubescent, rather deeply bidentate, 8 to 9 mm. long, the 

 margin and ape.x hyaline: awn rather stout, 6 to 9 mm. long (fig. i ). 



A weed in pastures and waste places at upper elevations; introduced. 

 Originally described from Europe. 

 Kauai: A\'ithout locality. Rock 5128. 

 Hawaii: Humuula Sheep Station, 6000 feet, Hitchcock 14434- 



3. Bromus molliformis Lloyd, Fl. Loire Inf. 315. 1844. 



A low branching grass, the culms 10 to 30 cm. tall: sheaths pubescent: blades narrow, 

 pubescent: panicle short and dense, mostly not over 5 cm. long: spikelets 1.5 to 2.5 cm. long; 

 gltimes 10 to 12 mm. long, pubescent: lemmas about i cm. long, the pubescence more or less 

 spreading and flextious : awns of the lower florets short, of the upper 5 to to mm. long and at 

 maturity or in dried specimens, spreading. 



A weed in fields and waste places : introdticed. Orig'inallv described from 

 Spain. 

 Oahu: Schofield Barracks. Hitchcock 13Q14, 13975- Honolulu, weed along car 



line. Fort Shafter, Hitchcock 13844. 



4. Bromus racemosus L. Sp. PI. ed. 2. 1:114. 1762. 



Resembles B. Iiordcacciis. but the panicle more open and the spikelets scabrous only, not 

 pubescent (fig. 2). 



A weed in pasture land; introduced. Originally described from Europe. 

 Hawaii: Kukaiau Ranch, 4000 feet, Hitchcock 14266. 



3. Bromus rigidus gussonei (Pari. 1 Coss. & Dur. Expl. Sci. Alger, 2:159. 1867. 



Bromus inaxiiiius gussonei Pari. Fl. Ital. i :407. 1848. 



Bromus I'illosus giisso}ici Aschers. & Graebn. Syn. Mittleur. Fl. 2:595. 1901. 



Bromus villosus Forsk. 1775 is invalidated by B. rillosus Scop. 1772. 



Bromus iiiaximus Desf. 1798 is invalidated by B. ma.vimus Gilib. 1792. 



Culms 40 to 60 cm. tall ; sheaths and blades pilose ; panicle open, rather few-flowered, 

 8 to 15 cm. long, the lower branches 4 to 5 cm. long; spikelets usually 5 to 7-flowered, 3 to 5 cm. 

 long; glumes smooth, narrow, acuminate, the first 15 to 20 mm. long, i-nerved, the second 

 25-30 mm. long, 3-nerved : lemmas 5-nerved, 25 to 30 mm. long, scabrous or puberulent, 

 2-toothed, the teeth 3 to 4 mm. long : awns stout, straight, 3 to 5 cm. long. 



A weed in fields ; introduced. Originally described from Italv. 

 Oahu: Schofield Barracks, Hitchcock 13922. 

 Hawaii: Kukaiau Ranch, 3600 feet, Hitchcock 142 19. Slopes of ]Mauna Kea, 



5000 feet. Rock 8403. 

 Without locality: Hillebrand. 



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