Hitchcock— The (I'r asses of Hawaii 175 



long, villous on the iiiarfjins : sterile k'liiina as loiii;" as the spikclct. about 5-nc'rvc(l. the lateral 

 nei . villou>, tcrtile leinnia as long as llie spikelet, pale (tig. ()2). 



'I'liis species differs from .S". saa<^\tinalis in llic erect racemes and the shorter 



ghimes. 



A weed in sha(l\' nmist rich soil; inlrodnced. ( )rii;in;dl\' descrilK-d from 



Ha i and the Aiar(|iiesas Islands ("Inss. Sandw. et Alarchion." ). 



Kai : Kaloko Reservoir, Forbes 5S2. Olokele (Uilch, Hitchcock 15257. 



Oahu IMakiki. PTeller 1072. HonoKihi, Hitchcock t;v35- ^^^- Tanlalns. Hitcli- 

 cock 13862. 



Hawaii: Hilo, Hitchcock 14190; Newell in 1917. Kukuihaele, Rock 4545. South- 

 east coast of Puna, \\'ilkes Expl. Exped. (Gray Herbarium. Tn this speci- 

 men the sheaths are tjlabrous or very sparsely beset with papillae.) 



4. Syntherisma sanguinalis( L. ) Dulac. Fl. Haut. Pyr. yj. 1867. 



Pa nil mil sam^iiinali' L. Sp. PI. 57. 1753. 



Digitaria san^auinalis Scop. Fl. Carn. ed. 2. i :52. 1772. 



Culms usually flecumbent-spreacling. often rooting at the nodes, as much as i meter long, 

 glabrous : sheaths, at least the lower, papillose-hi.spid : ligule a short membrane : blades flat, lax, 

 5 to 15 cm. long, 5 to 10 mm. wide, scabrous, more or less pilose at base; racemes several, 

 mostly 3 to ID, rarely 2, digitate or with r or 2 fascicles below the summit, 3 to 15 cm. long, 

 more or less spreading at maturity : rachis winged, the green wings about as broad as the 

 whitish center, scabrous on the margins ; spikelets 3 mm. long, lanceolate, acute : first glume 

 evident, triangular-acute, about 0.5 mm. long; second glume narrow, 3-nerved, alx)ut two-thirds 

 as long as the spikelet, prominently villous on the margins and often also on the internerves : 

 sterile lemma as long as the spikelet, 5 to 7-nerved. usually 3 nerves on the flat face of the 

 spikelet. the marginal nerves more or less silky-villous, the hairs appressed at first, often 

 spreading and prominent at maturity; fertile lemma pale, acute (fi,g. 64). 



A weed in fields and waste ])Iaces; introduced. Originally described from 

 Europe. 



Kauai : I^ihue, Forbes 466. 

 Oahu; Honolulu, Forbes 17 14; Hitchcock 13683. Slopes of Kaala. Forbes in 



191 2. Pauoa, Heller 2320. 

 Hawaii; Hilo, Hitchcock 14191 ; Newell in 1917. \\'ithout locality, ]\Iann & 



Brigham. 



5. Syntherisma debilis ( Desf. ) Skeels, U. S. Dept. Agr. Bur. PI. Ind. Liull. 261:30. 1912. 



■Panicuin dchilc Desf. Fl. .\tl. i :59. 1798. 



Digitaria debilis \\\\\(\. Enum. Hort. P)erol. 91. 1809. 



Culms weak and slender, erect or decumbent at base ; sheaths glabrous or sparsely pilose : 

 ligule thin, truncate-erose, 2 mm. long: blades flat, lax, scabrous, 5 to 10 cm. long, 2 to 5 mm. 

 wide : racemes mostly 2 to 4, ascending or spreading, 2 to 3 approximate at the summit and 

 sometimes one a short distance below, 3 to 8 cm. long; rachis narrow. 0.5 mm. wide, narrowly 

 winged, scabrous ; spikelets lanceolate, acute. 3 mm. long ; first glume wanting or only about 

 0.2 mm. long; second glume alwut half as long as the spikelet, narrow, acute, slightly villous 

 along the margin^ .sterile lemma as long as the spikelet, about 7-nerved, glabrous: fertile lemma 

 pale. 



A weed in waste ])laces ; introduced. (Originally described from the Medi- 

 terranean region. 



