No. 57. 



CALAMAGROSTI9 SYLVATICA var. Longifolia Vasey, Contr. 

 Nat, Herb. iii. 83 (1892). 



Plant perennial, densely tufted, with numerous sterile shoots from a creeping 

 rootstock. 



Culms erect, simple, or branched at the base, leafy nearly to the pauicle, 10 to 15 

 inches tall. 



Leaves of sterile shoots numerous, with close sheaths and involute blades equal- 

 ing the culms : leaves of the culm 2 or 3 ; sheaths nearly smooth, striate, rather loose 

 above, half open at the throat, equaling or exceeding the internodes; blades flat or 

 loosely involute, setaceously pointed, scabrid above, equaling those of the sterile 

 shoots; ligule obtuse, 1 to 2 lines long. 



Inflorescence a close-flowered, erect, spike-like panicle 2 to 4 inches, long ; rays 4 to 6 

 at each of the 8 to 10 nodes, erect or almost appressed, unequal, £ inch long or less, 

 divided and spikelet-bearing to the base. 



Sjpikelets 3 to 4 lines long, with 1 perfect floret and a pilose, sterile pedicel; empty 

 glumes divergent, nearly equal, exceeding the floret, lance-ovate, acute or awn-pointed, 

 nearly smooth, 3 to 4 lines long, the first 1 -nerved, the second 3-nerved ; floral glume 

 ovate-oblong, 2-lobed, each lobe terminating in two setaceous points formed by the 4 

 hispid, excurrent nerves, membranaceous and smooth below, 2£ to 3 lines long; awn 

 arising below the middle, 4 to 5 lines long, much exceeding the glumes; palet lance 

 oblong, 2-toothed at the apex, thin, the 2 keels contiguous above, £ line shorter than the 

 glume; grain cylindrical, with a furrow on one side, yellow, 1£ to 2 lines long; hairs 

 of the callus half as long as the floret, and those of the rudiment two-thirds as long. 



Plate LVII; a, spikelet with glumes spread somewhat to show the floret and ster- 

 ile pedicel; b, first empty glume; c, second empty glume; d, floral glume, dorsal view ; 

 e, palet. 



Collected by H. N. Bolander (No. 6470) along the Mattole Elver, Humboldt County, 

 California. Well marked by the long, involute leaves and the conspicuous hairs of the 

 callus. 



