14- Mciiidirs Bcruicc I'. Bishop Museum 



Culms densely tufted, erect, i,dal)r<>us or pubescent, 30 to 100 cm. tall; sheaths usually 

 loose, {glabrous nr softly pubescent: lijjulc membranaceous, about 5 mm. lontj, lacerate a' apex; 

 blades rather thick. 10 to 20 cm. lon.ij:. 2 to 4 fir sometimes as much as (1 mm. wide, glabiuus or 

 l)ubescent, tiat or more or less involute, especially toward t!ie apex, tapering to a hard subulate 

 j>oint: i)anicle erect, clo.se and spikelike, more or less interrupted at base, or sometimes inteirupted 

 tlirongliout. or even rather loose, 10 to 20 cm. lonj^, usually about i cm. thick: spikclets in close 

 clusters, i to 3-flowered. compressed ; glumes acuminate, atout equal in length, about 5 mm. 

 long, scabrous on the keels, scabrous or soft-pubescent on the surface, the first narrow, the 

 second nearly twice as wide as the first : lemmas rather firm, scarcely keeled, obscurely 5-nerved. 

 the lower about 5 nun. long, more or less scabrous, awned on the back below the entire or 

 slightly bifid tip. the awn variable, reduced or wanting, or as much as 2 to 3 mm. long: straight 

 or spreading, commoidv shorter on the \\\)\)i;v tlorets, tiie rachilla joints villous or glabrous 

 (fig- 27). 



This species is fairly uniform in habit but varies greatly in the amount of 

 ])ubesccncc and in the length of the awns. Plants with i -flowered spikelets might 

 be referred technically to Calaniagrostis. The species is intermediate between 

 Trisetum and Kocleria. 



0])en ground, sandy or gravelly slopes or ])lains, 5000 feet and upwards, 

 common near timber line. (PI. XXXII, J.) Originally described from "Insula 

 Owhyhee, ad montem Kaah," collected by Macrae in 1825. The tyi>e is described 

 as being ])nbescent and as having ;iwns short and erect, or absent from the 

 upper floret. 



Lanai: Kalama. Munro 317. 



Mam': Haleakala Crater. I'auric 1350, Hitchcock 14059, T4903, 14998, 14953. 

 Rock 85 1 J, 16005. Mountains, F.ast Maui, Wilkes V.\\)\. Kxped. (Gray 

 Herbarium ). 

 Hawaii: Hanehane. Kona, Forbes. if)8: Mauna Kea, Forbes 853, 854, 855; Hitch- 

 cock 14291), 14453, T4457: Rock 8404, 8709, Faurie 1358; region of 

 Sophora, Wilkes Fxpl. Exped. ; Humuula Slieep Station. Hitchcock 14419, 

 1443 1 ; Kukaiau Ranch, Hitchcock 14235, 14244; Aina llou, h'orbes 830; 

 Hualalai Mountains, Rock 3628; Plitchcock 14510, 14520. 14527; Mann & 

 Brigham 326; Luamakani Crater, Rock 3260; Mauna Loa. Hitchcock 1462 1 ; 

 north slope Mauna Kea. Hitchcock 14284; Bullock Plains. Wilkes Expl. 

 Ex])ed.; Waimea. \\'ilkes l^x])!. Ivxped. Without locality, Remy 82'" (Cray 

 Herbaritim). 



NT 



13. A VENA L. 



.V* 



Spikelets 2 to several-flowered, the rachilla bearded, disarticulating above the glumes and 

 between the florets; glumes about equal, membranaceous or papery, .several-nerved, longer than 

 the lower floret, usually exceeding the upper floret : lemmas indurate, except toward the summit, 

 5 to 9-nerved, bidentate at the ajiex, bearing a dorsal bent and twisted awn (this straight and 

 reduced in Avcna satha). .\nnual or perennial, low or moderately tall grasses, with narrow or 

 open commonly few-flowered panicles and large spikelets. 



Lemmas glabrous or nearly so i. A. sativa. 



Lemmas pubescent with long hairs, commonly brown. 



Teeth of lemma acute, not awned 2. A. fatua. 



Teeth of lemma awned 3. A. barbata. 



"The Rciny collection in the Cray I Icrli.iriuni lias iwo slicets niinibcrcd 8j. Sec Ciil'iioh daclyloii. 



[44] 



