GRASS FAMILY. 





91. HYSTRIX Moench, Meth. 294. 1794. 

 [ASPRELLA Willd. Enum. 132. 1809. Not- So.1 



[GYMNOSTICHUM Schreb. Beschr. Graa. : 127. pi. ,, /8i,j 

 Usually tall grasses, with flat leaves and terminal spikes. Spikelets J seUral f 

 ,. pairs, rarely in 3-9, at each node of the rachis. 1- n.pty scale* wanting, or *oroelmies'a 

 peanng as mere rudiments; flowering scales narrow, convolute, ri < led on the back 



5-nerved above, terminating in an awn; palet scarcely shorter than the scale > keeled! 

 Stamens 3. Styles very short, distinct. Stigmas plumose. Grain oblong, adhering to tk* 

 palct when dry. [Greek name of the Porcupine, referring to the long awns. ] 

 Four known species, the following: and a Cali- 

 .11 one occurring in North America. 





Hystrix Hystrix (L.) Millsp. 

 Bottle-brush Grass. (Fig. 541.) 



s llvstrix I,. Sp. PI. Ed. 2. 124. 1762. 

 la Ilysln'.v Willd. Enum. 132. 1809. 

 Gymnostichum Hystrix Schreb. Beschr. Gras. 2: 



"127. f>l. 47. 1810. 

 Hv-h-i i llyslrix Millsp. Fl. W. Va. 474. 1892. 



Culms 2-4 tall, erect, simple, smooth and 

 glabrous. Sheaths usually shorter than the in- 

 ternodes; ligule very short; leaves 4 - ^ / -o/ long, 

 y/_5// wide, smooth beneath, rough above; 

 spike 3 / -7 / in length, spikelets at length widely 

 spreading, 4 // -6 // long, exclusive of the awns; 

 empty scales awn-like, usually present in the 

 lowest spikelet; flowering scales 4 // -6 // long, 

 acuminate into an awn about i' in length. 



In rocky woods, New Brunswick to Ontario, 

 south to Georgia, Illinois and Minnesota. Ascends 

 to 2100 ft. in Virginia. Spikelets very easily de- 

 tached, even when young. June-July. 



92. ARUNDINARIA Michx. Fl. Bor. Am. x: 7.;. 1803. 



Arborescent or shrubby grasses, with simple or hrunchi-d culms and flat short-petioled 

 leaves which are articulated with the sheath. Spikelets borne in panicles or racemes, 

 2-many-flowered, large, compressed. Empty scales i or 2, the first sometimes wanting, 

 flowering scales longer, not keeled, many nerved; palets scarcely shorter than the scales, 

 prominently 2-keeled. Lodicules 3. Stamens 3. Styles 2 or 3. Stigmas plumose. Grain 

 furrowed, free, enclosed in the scale and palet. [From Arundo, the Latin name of the Reed.] 



About 24 species, natives of Asia and America. Two are found in the W't ted States. 



i. Arundinaria tecta (Walt.) Muhl. 

 Scutch Cane. SmalU 42.) 



Arnmin Iffla Walt. Kl. Car. 81. 1788. 

 Ariiniiinaria tscta Muhl. Cram 

 Amntihmria mat /CM/V/ ma v.r 

 Munro. Trans I.inn. SK- J6 15. 1 



Culms 3-i5 tall, erect, shrubby, branch- 

 ing at the summit, smooth and glabrous. 

 Sheaths longer than the intcrnodes. smooth or 

 rough, ciliate on the margins; lijjule 

 leaves lanceolate, 3 '*'-' K "** 



flat, more or less pul>escent beneath, glabrous 

 above; racemes terminal, or on short UafltM 

 culms; spikelets 7-io-flowered. ug.00 



pedicels \' in length or les*. which are some- 

 times pubescent; empty scales unequal. Ih 

 usually very small, sometimes wanting: flower- 

 ing scales 6"-io" long, acute or acuminate, 

 smooth, scabrous or pubescent 



In swamp- and m-.i-i -U. MaiyUnd to 

 and Miss-.uri. Fl..ii.U .il Texas. Maj-July. 



