lIitchc<H-k — The Grasses: of Hawaii 187 



4. Panicum nubigenum Kuntli, I'jium. I'l. i ;ijS. 1833. 



Paiiicinii iiimitainiin Gaud. \'oy. Uran. P.ot. 411. 1830 (title page 1826). Not Panicum 

 montamtin R<ixl). 1S20. 



Ncitrachuc iiioiitainnn Gaud. Voy. Uran. Dot. Atlas pi. 26. 1830. 



Plants annual: culms conuuonly much branched and spreadin<:f, 10 to 30 cm. tall, pubcru- 

 lent, more or less villous at the nodes; sheaths puberulent ; ligule a dense line of hairs i to 2 mm. 

 long; blades flat or involute, mo.stly less than 10 cm. long, i to 2 mm. wide, puberulent beneath, 

 pilose on the upper surface, subulate-pf)inted ; panicles numerous, greenish or tawny, narrow, 

 I to 5 cm. long, usually included at base in the uppermost sheath, the branches appressed, 

 angled, pilose; spikelets about 2.5 mm. long, acuminate; glumes pubescent, the acuminate apex- 

 pilose, the erect hairs forming a terminal tuft, the first a little longer, 5-nerved, the second 

 7-nerved ; sterile lemma a little shorter than the glumes, glabrous, 7-nerved, the palea e!lii)tic, 

 one-third as long as the lemma: fertile lemma 1.5 mm. long, 7-nervcd, the palea inclosed at the 

 margins (fig. 72). 



Di-y plains and slopes. (Originally described Innn "Insulis Sandwicen- 

 sibus." 



Oabu: Mokolii Island, Rock 12766; Koko Head, Forbes 2414, 2447. 

 Molokai: W'itliont locality, Stokes in 1909. 

 Lanai: Mamali, G. C. Mnnro, April 23, 1917. Kahalepaloa, G. C. Mnnro, 



Afar. 6, 191 7. 

 Hawaii : W'itbont locality, ^^'ilkes Explor. Exped. 



5. Panicum kauaiense sp. nov. 



Plants annual, glabrous except the spikelets : culms branching at base, 30 cm. tall ; ligule 

 about 0.5 mm. long, a short membrane dissected into hairs ; blades flat, involute at the long and 

 slender point, 10 to 15 cm. long, i to 3 mm. wide; panicles tawny, narrow, 5 to 8 cm. long, the 

 axis and branches scabrous, the lower branches as much as 5 cm. long; spikelets narrow, 

 actiminate, 3 mm. long, pubescent, appressed along the branches ; glumes acuminate, pilose, the 

 hairs ascending as much as i mm. long; first glume a little shorter than the second, about 

 5-nerved, the second 7-nerved ; sterile lemma intermediate in length between the glumes, glabrous, 

 7-nerved, the palea narrow, about one-fourth as long as the lemma; fertile lemma narrow, acute. 

 1.7 mm. long (fig. 76). 



Type in the U. S. National Herbarium, no. 836228. collected in Haupn 

 Range, near Nawiliwili Bay, Kauai, Hawaiian islands, October 31, 1916, by 

 C. N. Forbes (no. 703). 



A collection from East Maui by the Wilkes Expedition appears to be this 

 species but differs in having the leaves minutely liispidulous and the nodes slightly 

 villous. 



6. Panicum pellitum Trin. Gram. Pan. 198. 1826; Sp. Gram. 2: pi. 2^,/. 1829. 



Paiiiciiiii i:;nssypiiia Hook. & Arn. Bot. P)eechey \'oy. 100. 1841. 



Plants annual : culms erect or decumbent at base, 30 to 50 cm. tall, glabrous or pubescent, 

 tiie nodes pilose ; sheaths papillose-pilose or glabrescent ; ligule a line of hairs i mm. long : 

 blades flat, 5 to 15 cm. long, as much as 5 mm. wide, pilose; panicle 10 to 15 cm. long, rather 

 loose, the branches ascending, as much as 10 cm. long; spikelets appressed, acuminate, 2 mm. 

 long or, because of the longer jxiint, 3 mm. long; glumes alxiut equal, pilose on the upper part 

 with a few hairs i mm. long from a papillose base, the first 3-nerved, the second 5-nerved ; 

 sterile lemma a little shorter than the glumes, glabrous, 7-nerved, the palea oval, one-third as 

 long as the lemma: fertile lemma 1.2 mm. long (fig. 7S^- 



I 89] 



