Piper New and Interesting American Grasses. 147 



halfway to the panicle, its short blade 1 to 3 cm. long. Panicle ovate or 

 oblong, quite dense, 2 to 6 cm. long ; rays short, scabrous, 2 to 4 at a node, 

 bearing one to five spikelets at or near their tips, the- lower rays branched 

 in the larger panicles. Spikelets compressed, oblong-ovate, 3 to 5 or rarely 

 7-flowered, 6 to 10 mm. long ; rachilla scabrous ; florets closely imbricated ; 

 glumes firm, dull, hyaline margined ; first empty glume 1-nerved, broadly 

 ovate, hardly acute, scabrous on the keel above, sparingly ciliolate near 

 the apex, 3 mm. long ; second similar, 3-nerved, 4 mm. long ; flowering 

 glumes ovate, barely acute, 5-nerved or rarely 6-7-nerved, very sparsely 

 scaberulous, scabrous on the keel, minutely ciliate near the apex, 4.5 to 5 

 mm. long; palet equalling or exceeding the glume, oblong-lanceolate, 

 retuse, the nerves strongly ciliate, the lateral portions half as wide as the 

 internerve. 



Related to Poa cusickii, and Poa idahoensis, differing from the former in 

 its strongly involute narrower leaves, denser panicles, scabrous stems, and 

 larger florets ; from the latter in its smaller size, dense panicles, and close 

 spikelets, and from both in its much wider glumes and usually purple 

 panicles. 



The following specimens have been examined : 



Washington : Rattlesnake Mountains, Yakima County, Cotton 557, May 

 7, 1902 (Type) ; same locality, Griffiths and Cotton Nos. 4 and 20 ; Kahlotus, 

 Cotton 1010. 



Oregon : Grizzly Butte, Crook County, Leiberg 231 ; Calamity to Silvies 

 Valley, Griffiths and Morris 814 ; Silver Creek Valley, Cusick 2613 ; Island 

 Ranch, Griffiths and Morris 724. 



Poa sandbergii Vasey. 



A study of the types of Festuca spaniantha Phil., Anal. Univ. Chile 94 : 

 174. 1896, and Festuca patagonica Phil., Anal. Univ. Chile 94: 174. 1896, in 

 Philippi's herbarium show them to be identical with Poa sandbergii Vasey 

 of the Columbia Basin. The recurrence of this species in the southern 

 hemisphere is a fact as yet unparalleled among the western Poas. 



Distichlis multinervosa (Vasey). comb. nov. 

 Melicamultmervosa Vasey, Bot. Gaz. 16: 235, 1891. 



This grass is closely related to D. texana (Vasey) Scribn. and it is not 

 congeneric with Mdica. No other specimens seem to have been collected 

 since the plant was found by Mr. G. C. Nealley at Brazos Santiago, Texas. 



Bromus vestitus Schrad. 

 Bromus vestiius Schrad. Gott. Gel. Anz. 3 : 2074, 1821. 



This grass has not previously been recorded from this country, but it 

 appears to be quite widely established in California. The following spec 

 imens have been seen: Bakersfield, Kern County, Davy 1746; Pilar- 

 citos, San Mateo County, Davy 1146; Yosemite Valley, Bioletti 15, in 

 May, 1900. 



