Hitchcock — The Grasses of Hazcaii 123 



scabrous on the keel, about 3 mm. long: lemmas 4 to 5 mm. long, acute, sparingly webby at 

 base especially in the lower florets, scabrous on the keel, scabrous-pubescent on the lower part 

 of the lateral nerves, the intermediate nerves faint : palea nearly as long as the lemma, scabrous- 

 ciliate on the keels, 2-toothed (fig. 10). 



Moist shady cliffs. Originally described from "Kauai; um Halemanu an 

 offenen, humusreichen Stellen der Thaler nr. 2124, 2143.'' Poa longeradiata was 

 described from "Kauai. Waimea (Kn. and M. & B. 368); Maui? gulch of 

 \^'aihee." 

 Kauai: Kaholuamano, Hitchcock 15309; Rock 12639. Waimea, 2000-3000 feet, 



Mann & Brigham 368. West side ridge, west side of Kauaikinana, Forbes 



796. West side Waimea drainage basin, trail down ridge to Kauaikinana, 



Forbes 992. 



The specimens here cited differ somewhat from one another. Hitchcock's 

 no. 15309 is a tall rather stout plant over i meter tall with a large panicle as much 

 as 15 cm. long with long slender branches. The spikelets are past maturity and are 

 mostly wanting. Forbes's no. 992 is a cluster of rather slender culms 40 cm. tall 

 with narrow blades scarcely 2 mm. wide, and small panicles 4 to 5 cm. long. Rock's 

 no. 12639 ^"d Forbes no. 796 are intermediate. They all agree in the scabrous 

 sheaths, short ligule, and the spikelet characters. The slender shoots with small 

 panicles may be the jitvenile phase. 



6. BRIZA L. 



Spikelets several-flowered, broad, often cordate, the florets crowded and spreading hori- 

 zontallv, the rachilla glabrous, disarticulating above the glumes and between the florets, the upper- 

 most floret reduced : glumes about equal, broad, papery-chartaceous, with scarious margins ; 

 lemmas papery, broad, with scarious spreading margins, cordate at base, several-nerved, the 

 nerves often obscure, the apex in our species obtuse or acutish ; palea much shorter than the 

 lemma. Annual or perennial, low grasses, with erect culms, flat blades, and for the most part 

 open, showy panicles, the pedicels in our species capillary, allowing the spikelets to vibrate in 

 the wind. 



I. Briza minor L. Sp. PI. 70. 1753. Quaking gr.\ss. 



An annual with erect culms 10 to 30 cm. tall ; panicle erect, pyramidal, many-flowered, the 

 main branches stiffly ascending, the capillary branchlets spreading; spikelets triangular-ovate, 

 3 mm. long (fig. 11). 



A weed along roads and trails; introduced. Originally described from 

 Europe. 



Kauai: Olokele Gulch, Hitchcock 15210. 

 Oahu: Nuuanu Pali, Hitchcock 13799; Forbes 1526. 

 Molokai: Central part, Hitchcock 15 164. 

 Maui: Olinda pipe line, Hitchcock 1493 1. 

 Hawaii: Paauhau, Rock 3457. Kukaiau Ranch, 3600 feet, Hitchcock 14209, 



Without locality, Wilkes Expl. Exped. 



7. ERAGROSTIS Host. 



Spikelets few to many-flowered, the florets usually closely imbricate, the rachilla disarticu- 

 lating above the glumes and between the florets, or continuous, the lemmas deciduous, the paleas 



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