630 POACE^. 



An annual, taller and more vigorous than the species; floral 

 glumes terminated by slender awns. Much employed in Great 

 Britain for irrigated meadows. See p. 161, Vol. I. 



Michigan, Clarh 1687, Beal 155, 156. 



3. L. TEiiuLEXTUM L. Sp. PL 83 (1753). Poisox-dakxel. 

 L. cBgypficum Bell. Eouv. Monog. 43. L. cdhum Steud. Xom. 

 Ed. 1, 493 (1821). L. annuitm Lam. PL Pr. 3:620 (1778). L. 

 deciijiens Dum. Obs. Gram. Belg. 98 (1823). L. infelix Rouv, 

 Monog. 39. L. hicidum Dum. 1. c. ; and other synonyms. 



Annual; taller and stouter than L. perenne. Empty glumes 

 equal or usually exceeding the 5-7-flowered spikelet; floral glume 

 shorter, broader, firmer and more turgid than in L. perenne, 

 usually terminating in an awn as long as the spikelet. 



Europe, north Africa, west Siberia, India; introduced into 

 North America. 



A weed in waste places, seldom very common. Said to be very 

 poisonous, though this statement is questioned by many. 



Delaware, Canhy for Scribner 3527; Virginia, Chickering for 

 U. S. Dept. Agricul. 760. 



Var. AKVEKSE (With.). L. arvense With. Arr. Brit. PL Ed. 

 3, 2:168 (1796). 



Spikelets more turgid, awn very short or none. 



Europe. 



(194). JOUVEA Fourn. Bull. Soc. Bot. Belg. 15:475 (1876). 



"Spikelets unisexual, dioecious, very dissimilar, the staminate 

 ones compressed, many-flowered, spikate on slender terminal or lat- 

 eral pedicels, rachilla continuous. EmjDty glumes 2, thin, the 

 second 1-nerved and longer than the first (in old specimens the 

 empty glumes, particularly the first, are rarely present) ; flowering 

 glumes longer and broader, carinate, acute, herbaceo-chartaceous, 

 3-nerved; palea broad and prominently 2-keeled. Stamens 3. 

 Female spikes 1-several in terminal fascicles ou the culm or its 

 branches, enclosed below by the leaf-sheatlis or broad propbylla, 

 terete, acute, articulated at base and falling off entire. Spike- 

 lets 1-flowered, embedded in the continuous rachis, adnate below. 

 Outer glume cartilaginous, abruptly narrowed towards the free 



