A(JI«)STIDE.E. 333 



garis liasashort truncate ligulo, and the panicle after flowering more 

 or less spreading." S. Wats. Hot. Calif. 5^71 (188(»). 



.1. nihjaris thrives on dry land, A. alha loves marshes. .1. 

 titohnifvi'a is a stoloniferous state of this species. Michigan, Clark 

 •-J30T, 2300. For further particulars see Vol. 1, p. 148, Fig. 70, 



2a. A. (iiGANTEA Gaud. Agrost. Ilelv. 1;189 (1811) not 

 l?oth. 



Culms robust, GO-120 cm. high, more or less creeping at the 

 base. Sheaths scabrid or smooth; ligule lacerate, 3-5 cm. long^ 

 blades flat, scabrous above and below, pungent-pointed, 12-18 cm. 

 long, G-ll mm. wide. Panicle linear-lanceolate or ovate-lanceo- 

 late, usually brownish or reddish green, 15-25 cm. long; rays of 

 lower node of panicle crowded, scabrous, 15-25 in number, the 

 longest 6-12 cm. long, branching and flower-bearing on the up])er 

 half; some of the rays less than 1 cm. long, second whorl 3-5 cm. 

 distant, with somewhat fewer ravs. Spikelets about 2 mm. lont'. in 

 detail varying, and apparently much like those of .1. alba L. j\Ias- 

 sachusetts (moist land near lioston Harbor), (\ E. Faxon in 18TS, 

 E. A, Startcvant ; Sackott's Harbor, fjike Ontario, in 1833, labelled 

 A. alba L. by A. Gray, in his herbarium. 



In the herbarium of Harvard University are several pliaits of 

 this appearance from various parts of Europe, and variously labelk-d, 

 most of them as A. alba 1j., tliough often with another name below. 



23. A. Oregonensis Vasey, Bull. Torr. Club, 13:55 (188(;). 



Culms smooth, slender. al)out ('>0 cm. high. Sheaths smootli; 

 ligule 2 mm. long; blades of the sterile shoots filiform, tliose of the 

 culm soft, 3 in number, very narrow, involute, 6-10 cm. long. 

 I'anicle thin, dark purple, lanceolate, nodding, 10-12 cm. lon<', 

 rays smooth, capillary, in clusters of 3-5, the longest 4-5 cm. long, 

 flower-bearing for about two-fifths of the extremities. Si)ikolets 

 lanceolate, slightly scabrous on the keels, 2-2.5 mm. long, the 

 three glumes reaching to the same height; first glume 1-nerved, sec- 

 ond faintly 3-nerved uelow; floral glume broad-oval when spread,, 

 5-nerved, obtuse, apex lacerate-toothed, unawned; palea 0; hairs 

 at the base very few and short. 



"The panicle approaches that of A. hiemalis, but is shorter, 



