ORYZE^. 179 



Michigan, Clarh 687, Beal, 27, 29 ; Ontario, Fowler; California, 

 Parish 1752, Soncs for M. A. C. 28. 



Wet places, somewhat common ; also found in South America, 

 Europe, and Asia. 



3. H. lenticularis (Michx.)Kuntze, Rev. Gen. PI. 777 (1891). 

 Catch-fly Grass. Leersia lenticularis Michx. Fl. Bor. Am. 

 1:39 (1803). Asprella lenticularis R. & S. Syst. 2: 267 (1817). 



Culms stout, 60-100 cm. high, branching. Leaf-blades 15-20 

 cm. long, 10-13 cm. wide, smooth or with small recurved prickles. 

 Panicle simple, 3-12 cm. long. Spikelets very flat, broadly oval, 

 closely imbricate, 6 mm. long; floral glume and palea bristly cili- 

 ate. Stamens 2. A grass of striking appearance. 



Wet grounds, Virginia, Illinois, and southward. 



4. H. hexandra (R. & S.) Britton, 1. c. Asprella hexanclra 

 R. & S. Syst. 2:267 (1817). Leersia hexandra Sw. Prod. 21 

 (1788). 



Culms stout below, branching, 30-20 cm. high. Ligule of large 

 plants 6 mm. long; blades narrow, firm. Panicle 15 cm. long, 

 contracted, erect, simple. Spikelets lanceolate-oblong, ciliate, 3.5 

 mm. long, loosely imbricate. Stamens 6. 



Lakes and ponds. Florida and westward. Buenos Ayres, 

 Africa, East Indies, Australia. 



5. H. monandra (R. & S.) Britton, 1. c. Leersia monandra 

 Sw. Prod. 21 (1788). Asprella monandra R. & S. Mant. 551 

 (1817). 



Slender erect perennials. 30-50 cm. high. Leaf-blades flat or 

 conduplicate, 12—15 cm. long, 5.3 mm. wide. Panicle exserted, 

 about 10 cm. long, with 4-6 single spreading rays bearing spikelets 

 beyond the middle. Spikelets smooth, pale green, mostly imbri- 

 cate, broadly semi-ovate, pointed, 1.2-1.5 mm. long, glumes com- 

 pressed, not winged-keeled, first 5-nerved and second 3-nerved. 

 Stamen 1. 



Texas, Nealley in 1888. 



Florida, West Indies, Texas, Mexico. 



