No. 100. 



H YSTRIX CALIFORNICA (Boland.) O. Ktze. Rev. Gen. PI. ii. 778 (1891). 

 Gymnostichum Oaliforhicum Boland. in Wats. Bot. Cal. ii. 327 (1880). 



Plant perennial, with coarse, woolly roots, and a more or less developed rootstock ; 



Culms erect, nearly smooth, robust, 2 to 4 feet tall, leafy nearly to the panicle. 



Leaves of the culm, 3 or 4; sheaths striate, coarsely pubescent, especially below, 

 nearly equaling or often exceeding the long internodes; blades flat, scabrid, taper- 

 pointed, £ to 1 inch wide, 4 to 12 inches long ; ligule obtuse, scarcely 1 line long. 



Inflorescence an erector nodding, rather loose, spicate panicle, 5 to 8 inches long, 

 with 2 to 4 spikelets on very short-curved pedicels or prominent calluses at each of 

 the 15 to 20 nodes of the rachis, or some of the spikelets on short rays at the lower 

 nodes. 



Spikelets 1- to 3-flowered; empty glumes wanting or rudimentary, capillary and 

 early deciduous; floral glume lanceolate, acute, rather thick, rather coarsely pubes- 

 cent, 5 to 6 lines long, prominently 5-nerved, the nerves all joining at the apex in a 

 rigid, hispid awn, about 1 inch long; palet broadly lance oblong, sparsely hispid or 

 smooth on the prominent keels, ciliate on the two prominent teeth at the apex; 

 stamens 3, with yellow anthers 3 lines long, scarcely exserted; ovary pubescent, with 

 a single dagger-shaped stigma 1£ lines long; lodicules fringed, nearly 1 line long; 

 internode of rachilla pubescent, 1 to 2 lines long, extending beyond the base of the 

 upper floret. 



Plate 0; a, florets of a 3-flowered spikelet; b, floral glume; c, palet; d : ovary 

 and lodicules. 



California, from San Francisco southward. 



