Ilitchcock — Tlic Grasses of //(/irfn'; 189 



Originally described from "inss. Sandw. (Chamisso)." 

 Maui : Haleakala, Rock 8708. 



7. Panicum lanaiense noni. nov. 



Panicuin affinc ITook. & Arn. Piot. r>eecliey \'<iy. loo. 1841. Xot I'miiciiiii affine Poir. 

 1816, nor Nees 1829. 



Plants annual; culms 20 to 40 cm, tail, erect or (lecuml)ent at base, sometimes much 

 branched at base, villous ; sheaths villous ; lig'ule a short ciliate membrane ; blades ascending, flat, 

 villous on lx)th surfaces, 10 to 15 cm. long, 2 to 5 mm. wide; panicles numerous, open, 3 to 10 

 cm. long, the branches pilose, ascending or spreading; spikelets 1.5 mm. long, acutish, appressed 

 along the branchlets ; glumes about equal, pilose, especially toward the upper part, with a few- 

 long liairs as much as i mm. long, the first ,vnerved, the second 5-nerved ; sterile lemma 

 7-nerved. glabrous, about as long as the glumes, the palea oval, about one-third as long as the 

 lemma; fertile lemma broafllv elliptic, 1.2 mm. long, turgid (fig. 86). 



Panic II III olTiiic 1 look. &• .\rn. was described from "Sandwich Islands." 



Open ground iit dry places on lee side of the islands. I'aiiicuni afjiiic Hook 

 & Arn. was described from "Sandwich Islands." 

 Kauai : Waimea, 2000 to 3000 feet, Mann & Brighant 383. 

 Lanai : Miki Plain, Munro in 1916. 

 Maui: Sand hills, Wailuku, Wilkes Expl. Exped. 

 Without locality: Hance 4926 (Gray Herbarium). In the Gray Herbarium is a 



specimen with glabrous spikelets bearing a printed label, "Panicum pellitum 



Trin. cum varr. Tns. Sandwich." 



8. Panicum repens L. Sp. PI. ed. 2. i ;87. 1762. 



Plants perennial from stout branching creeping rhizomes; culms erect, 30 to 80 cm. tall, 

 clothed at base with bladeless overlapping sheaths; blades flat or folded, 4 to 15 cm. long, 2 to 

 5 mm. wide, pilose on the upper surface toward the base; panicle 7 to 12 cm. long, the somewhat 

 distant branches stiffly ascending, usually naked at base, bearing short appressed branchlets with 

 short-pediceled approximate spikelets toward the ends ; spikelets about 2.5 mm. long, glabrous. 

 ovate, abruptly pointed ; first glume about one-fifth as long as the spikelet, truncate ; second 

 glume and sterile lemma equal, 5 to 7-nerved; fruit 1.8 mm. long (fig. yj). 



Along bank of ri\'er in open ground ; introduced. Originally described 

 from the Old World. 

 Hawaii: Hilo, Hitchcock 14145; Newell in 1917. 



9. Panicum barbinode Trin. Mem. Acad. St. Petersb. \'l. Sci. Nat. i -.2^6. 1834. P.\r.\.' cr.vss. 



Plants perennial with long stout stolons ; culms decumbent and rooting at base, often 

 2 meters or more long, glabrous, the nodes densely villous ; sheaths softly or harshly villous or 

 merely papillose or even glabrous, densely pubescent on the collar ; ligule membranaceous, 

 densely ciliate, about i mm. long; blades ascending or spreading, 10 to 30 cm. long, 10 to 15 mm. 

 wide, glabrous; panicle 12 to 20 cm. long, about half as wide, the rather distant, subracemose, 

 densely flowered branches ascending or spreading, the main a.xis and the somewhat flattened 

 branches scabrous on the edges, densely pubescent in the axils ; spikelets 3 mm. long, elliptic, 

 glabrous; first glume one-fourth the length of the spikelet, acute, i-nerved; second glume and 

 sterile lemma subequal ; fruit 2.3 mm. long, minutely transversely rugose (fig. 79). 



Wet places; introduced. Originally described from Pjrazil where it was 

 introduced from Africa. 



Hawaii: Hilo, Hitchcock 14183: Newell in 1917. 



1 91] 



