No. 80. 

 POA MACRANTHA Vasey, Hull.Torr. Clnb, xv. 11 (1885). 



riant iicri'imiiil, tufted or in small '■buiirlics," usually somewhat jjlaucous, Irom 

 a .strong lootstock. 



Ciilmn eiet't, or soiiiewliat (Iccninbeut at tlie base, often branched below, smooth, 

 rigid, leafy nearly to tlic panicle, 1 to li feet tall. 



Leaves from the base numerous, with loose, smooth sheaths and involute, rigid, 

 siiiootli, curving <ir Vi'curved blades (i to 12 inches long, often somewhat constricted 

 below tlie less in volute corneas points: leaves of the culm 2 to 4; sheaths striate, nearly 

 smooth, scarious-margined, loose and open above, exceeding the internodes; blades in- 

 \()lute, pointed, recurved, 2 to 4 inches long; ligule truncate, somewhat erose, decur- 

 rent, .1 line long. 



Injioreseenve a closely flowered, oblong, rather secund panicle, somewhat inter- 

 rni)ted below, 2 to 4 indies long; rays in twos or threes, erect, unequal, A to 2 inches 

 long, sitikclet-bcaring iicaily to the base. 



Spikelets lance ovate, compressed, 5- to 8-flowered, 6 to 7 lines long; empty glumes 

 lance ovate, acute, sparsely liisi)i(l on the keels, rather thin, 5 to 7-nerved, '.U to 4 

 lines long, about e(|ualiiig tlie lower florets; floral glume broadly lanceovate, barely 

 a<'ute, or more often emarginate, scarious-margined above, strigose-i)ubescent through- 

 out, ciliate on the keel and marginal nerves, 3.^ to 4 lines long; palet oblong, emargi 

 nate, pubescent on the keels, the broad margins infolded, nearly as long as tlie glume; 

 stanuMis ."5 with exseiied anthers; grain spindle sliajied, roughly wrinkhMl, golden 

 l)rown or gi'ay, ojjaipie, 2 lines long; lodicules ratlier prominent, i line long; iuternode 

 of rachilla thick, pubescent, less than h line long. 



I'LATi; LXXX; «, spikelet; /*, fl(«et opened; c. Iloral glume, dorsal view; r7, grain. 



California to Washington, in tiie sand ;dong the seashore or along the low river 

 banks in the tidewater regitni. It is di<ecious, the stamiiiate panicles being less 

 tlense, with more compressed, loosely-flowered spikelets and thinner glumes. 



