HORDED. 



633 



narrow. Spike terminal, slender, firm, straight or curved, one 

 glume spreading when in llower. They are distinguished by rigid 

 outer glumes, one or two in number, much longer than the hyaline 

 floral glume, showing a relationship to Botthmllia. Some species 

 have been placed in Ophinrmt. 



There are 6 species belonging to the Eastern Continent, and 1 

 to California and Oregon. 



1. L. FiLiFORMis (Roth). Trin. Fund. Agrost. 123 (1820). 

 EommUiaJJIifonnis'Roth, Usteri, Ann. Bot. 10:38 (1794). 



A slender branching glabrous decumbent annual, 20-30 cm. 

 high. Sheaths shorter than the internodes; ligule about 1 mm. 

 long; blades 1-3 cm. long, firm, involute. 

 Sj^ike enclosed at the base, 5-15 cm. long, 

 straight or curved, rachis stiff. Spikelets 

 5-T mm. long; empty glumes oblique, linear- 

 oblong, acute; floral glume 1-nerved. 



Borders of brackish marshes. 



Occasional ; introduced from Europe. 



Yar. INCURVATUS (L.). Trin. Fund. 

 Agrost. 173 (1820). Rottbcellia incurvata 

 L. f. Suppl. 114 (1781). 



Culm and spike stouter; the latter much 



^^^'^®*^^- Fig. 119.— Lepiurus fill- 



Pennsylvania, Serihner 3525a. formis. A, a portion 



^^^ /^„^ s ... -^ -^ - ^ of spike; a, spikelet. 



139. (269a). SCRIBNERIA E. Hack. Coult. (Richardson.) 



Bot. Gaz. 13:105 (1888). 



Spikelets 1-flowered, sessile and half embedded in the alternate 



notches of a more or less articulate, usually simple spike. Rachilla 



very short, articulate above the lower glume, extending as a short 



hairy awn beside the floret. Empty glumes 2 in number, narrow, 



firm, acute, slightly unequal, inequilateral, having no nerves next the 



rachis and two beside the keel in front; floral glume a third shorter 



than the first, membranous, keeled, bearing a stout awn between 



the teeth ; palea hyaline, 2-nerved, 2-toothed, longer than its glume. 



Stamen 1, anthers 3 mm. long. Stigmas short, sessile, feathery. 



Oraiu linear, laterally compressed, free, without a groove, embryo 



