Hitchcock — llic C'rasscs of Ifawaii 155 



20. GARNOTIA Rrongn. 



Spikelets I -flowered, the ])C(licel disarliculatin,!,^ below the glumes, in unequally pediceled 

 l^airs, searcely compressed: glumes narrow, about e(|ual, rather rigid, often awned. the first 

 i-nerved, the second _^-nerved : lemma usuall\- awned at the apex: i)alea as long as the Iwdy of 

 the lemma. Annual or perennial grasses with flat blades and narrow panicles. 



I. Garnotia sandwicensis llillebr. I'l. Ilaw. Isl. 51,^ 1888, 



Plants perennial, tufted : culms erect or decumbent, glabrous, 30 to 50 cm. tall ; siieaths 

 glabrous, villous on the margin and somewhat so at the throat and on the collar; ligule a short 

 ciliolate membrane less than i mm. long: blades flat but more or less involute toward the end 

 in drying, glabrous beneath, slightly scabrous on the upper surface, 5 to 15 cm. long, less than 

 5 mm. wide, narrowed at the base, long-acuminate at the apex : panicle narrow, rather closely 

 flowered, 7 to 15 cm, long, the branches appressed : spikelets nearly terete, in i)airs appressed 

 along the branches, the sJiorter pedicel i to 2 mm. long, the other twice as long, both angled 

 and scabrous, thickened upward, the base of the spikelet stiffly pilose with hairs aliout 0.5 mm. 

 long: glumes firm, about 4 mm. long, scaberulous on the nerves and somewhat so on the back, 

 3-nerved, the first with an awn about 5 mm. long, the second depressed or flat on the back, the 

 awn about 2 mm. long: lemma firm, glabrous, rounded on the back, somewhat depressed, very 

 faintly nerved, a little" shorter than the glumes, sparsely pilose near margins at base, extending 

 into a scabrous awn about i cm. long: palea about as long as the lemma, bearing a minute 

 tuft of hairs at apex (fig. 41 ). 



This species is closely allied to G. strict a Bfongu." originally described from 

 Tahiti and extending to the Philippines. In the latter species the hairs at the base 

 of the spikelet are shorter and fewer, the glumes are acmninate or the first slightly 

 awned. The awns are directly from the tips of the gltimcs while in C. \and7i'icciisis 

 there is a slight notch or shoulder at the tip of the glume. 



Moist cliffs or slopes. Originally described from "Molokai on grassy slopes 

 of the northern shore (Waikolu)," and a variety with shorter awns from Hawaii, 

 Molokai : Mapulehu Valley, near Pukoo, Forbes 306. ^^^ithout locality, Hillebrand. 

 Maui : Xahiktt, East Maui, Forbes 253. 

 Hawaii: Hilo, Faurie 1340; Rainbow Falls, Hilo, Hitchcock 14193: Newell in 



K)!/. Na Puu o Pele, ^^'ilkes Expl. Exped. 



21. POLYPOGON Desf. 



Spikelets i -flowered, the pedicel disarticulating a short distance below the glumes, leaving 

 a short-pointed callus attached : glumes equal, entire or 2-lobed, awned from the tip or from 

 between the lobes, the awn slender, straight : lemma much shorter than the glumes, hyaline, 

 usually bearing a slender straight awn shorter than the awns of the glumes. Annual or peren- 

 nial, usually decumbent grasses, with flat blades and dense, bristly, spikelike panicles. 



Plants annual: panicle compact, very silky: awns 7 to 10 mm. long I. P. monspeliensis. 



Plants perennial : panicle somewhat lobed ; awns 2 to 3 mm. long 2. P. lutosus, 



I. Polypogon monspeliensis ( L. 1 Desf. Fl. Atlant. 1:67. 1798. 



Alopeciinis inoiispcliciisis L. Sp. PI. 61. 1753. 



Plants annual ; culms erect or decumbent at base, scabrous below the panicle, depauperate 

 or as much as 80 cm. tall: sheaths smooth: ligule large; panicle dense and spikelike. 2 to 15 cm. 

 long, I to 2.5 cm. thick, green or tawny : glumes hispidulous, 2 mm. long, bearing a slender awn 

 7 to 10 mm. long from a minutely 2-lobed apex: lemma smooth and shining, i mm. long, 

 minutely toothed at the truncate apex, and bearing an awn about 1 mm. long (fig. 42). 



" Uuperrey, L. I., Voyage ilc l:i Coquille: Botanique, Vol. 2. p. 133. pi. 21. 1830. 



l57i 



