OHYZK.E. 179 



Michigan, rVr/;-^-687, Ikal, 27, 29; Ontario, Fowler; California, 

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



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

 Euroiie, and Asia. 



3. H. lonticularis(Michx.)Kuntzo, Rev. Gen. PI. 777 (181)1). 

 Catch-fly (jiKAS.s. Jjcersia lotficiilitris Michx. Fl. Hor. Am. 

 1:39 (1803). AspreUu lenticular':' W. & S. Syst. 2: 2G7 (ISIT). 



Culms stout, GO-lOO cm. high, bruncliing. Leaf-blaues 15-20 

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

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

 closely imbricate, 6 mm. long; floral glume and ])alea bristly cili- 

 ate. Stamens 2. A grass of striking appearance. 



Wet grounds, Virginia, Illinois, and southward. 



4. H. hexandra (K. & S.) Britton, 1. c. A.^prclln hexandra 

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

 (1788). 



Culms stout below, branching, 30-20 em. high. Ligulc of large 

 plants G 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). Ai<prella 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-G single spreading rays bearing spikelets 

 beyond the middle. Spikelets smootli, 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, NeaUey in 1888. 



Florida, West Indies, Texas, Mexico. 



