Hitchcock — The Grasses of Hazcaii 189 



Originall)^ described from "Inss. Sandw. (Chamisso)." 

 Maui : Haleakala, Rock 8708. 



7. Panicum lanaiense noni. nov. 



Paniciun affiiic Hook. & Arn. Bot. Beechey \"oy. 100. 184T. Not Panicum affine Poir. 

 1816, nor Nees 1829. 



Plants annual; culms 20 to 40 cm. tall, erect or decumbent at base, sometimes much 

 branched at base, villous ; sheaths villous ; ligule a short ciliate membrane ; blades ascending, flat, 

 villous on both 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 ; gknnes about equal, pilose, especially toward the upper part, with a few 

 long hairs as much as i mm. long, the first 3-nerved, 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 broadly elliptic, 1.2 mm. long, turgid (fig. 86). 



Panicum aifine Hook. & Am. was descrilied from "Sandwich Islands." 



Open ground in dry places on lee side of the islands. Panicum affine Hook 

 & Arn. was described from "Sandwich Islands." 

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

 Lanai : Miki Plain, I\Iunro in 1916. 

 INIaui: Sand hills, Wailuku, A\'ilkes 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. Ins. 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. 'Jj'). 



Along bank of river 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. \'I. Sci. Nat. i -.2^6. 1834. Par.\' gr.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 axis 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 2.5 mm. long, minutely transversely rugose (fig. 79). 



Wet places ; introduced. Originallv described from Brazil where it was 

 introduced from Africa. 



Hawaii: Hilo, Hitchcock 14183; Xewell in 1917. 



L91] 



