MANUAL OF THE GRASSES OF THE UNITED STATES 



889 



Jamaica, Alexander, Wilson, March 

 [type]. 



(120) LEERSIA Swartz 



(4) Leersia hexandra Swartz, Prodr. Veg. 

 Ind. Occ. 21. 1788. Jamaica, Swartz. 

 Asprella hexandra Beauv., Ess. Agrost. 2, 

 153. 1812. Based on Leersia hexandra 

 Swartz. 

 Leersia mexicana H. B. K., Nov. Gen. et 

 Sp. 1: 195. 1816. Mexico, Humboldt 

 and Bonpland. 

 Asprella mexicana Roem. and Schult., 

 Syst. Veg. 2: 267. 1817. Based on 

 Leersia mexicana H. B. K. 

 Leersia contracta Nees, Agrost. Bras. 516. 



1829. Brazil, Sellow. 

 Leersia elongata Willd. ex Trin., Acad. St. 

 Petersb. Mem. VI. Sci. Nat. 3 1 : 172. 

 1840, as synonym of L. mexicana 

 H. B. K. 

 Oryza hexandra Doell in Mart., Fl. Bras. 

 2 2 : 10. 1871. Based on Leersia hexandra 

 Swartz. 

 Oryza mexicana Doell in Mart., Fl. Bras. 

 2 2 : 10. 1871. Based on Leersia mexicana 

 H. B. K. 

 Leersia gouinii Fourn., Mex. PI. 2: 2. 



1886. Vera Cruz, Mexico, Gouin. 

 Homalocenchrus gouinii Kuntze, Rev. 

 Gen. PI. 2 : 777. 1891. Based on Leersia 

 gouinii Fourn. 

 Homalocenchrus hexandrus Kuntze, Rev. 

 Gen. PI. 2: 777. 1891. Based on 

 Leersia hexandra Swartz. 

 Leersia dubia Areschoug, Svensk Freg. 

 Eugenies Resa 1910: 115. 1910. Ecu- 

 ador, Andersson. 

 (1) Leersia lenticularis Michx., Fl. Bor. 

 Amer. 1: 39. 1803. Illinois, Michaux. 

 Asprella lenticularis Beauv., Ess. Agrost. 

 2, 153. 1812. Based on Leersia lenti- 

 cularis Michx. 

 Zizania lenticularis Michx. ex Beauv., 

 Ess. Agrost. 182. 1812. Name only, 

 doubtless error for Leersia lenticularis 

 Michx. 

 Homalocenchrus lenticularis Kuntze, Rev. 

 Gen. PI. 2: 777. 1891. Based on Leersia 

 lenticularis Michx. 

 Endodia lenticularis Raf. ex Jacks., Ind. 

 Kew. 1: 840. 1893, as synonym of 

 Leersia lenticularis Michx. 

 (5) Leersia monandra Swartz, Prodr. Veg. 

 Ind. Occ. 21. 1788. Jamaica, Swartz. 

 Asprella monandra Beauv., Ess. Agrost. 2, 

 153. 1812. Based on Leersia monandra 

 Swartz. 

 Paspalum cubense Spreng., Neu. Entd. 3: 

 12. 1822. Cuba and neighboring is- 

 lands. 

 Oryza monandra Doell in Mart., Fl. Bras. 

 2 2 : 9. 1871. Based on Leersia monandra 

 Swartz. 

 Homalocenchrus monandrus Kuntze, Rev. 

 Gen. PI. 2: 777. 1891. Based on Leersia 

 monandra Swartz. 



(2) Leersia oryzoides (L.) Swartz, Prodr. 

 Veg. Ind. Occ. 21. 1788. Based on 

 Phalaris oryzoides L. 

 Phalaris oryzoides L., Sp. PI. 55. 1753. 



Virginia. 

 Homalocenchrus oryzoides Poll., Hist. PI. 

 Palat. 1: 52. 1776. Based on Phalaris 

 oryzoides L. 

 Ehrhartia clandestina Web., Prim. Fl. 

 Hols. 64. 1780. Based on Phalaris 

 oryzoides L. 

 Asperella oryzoides Lam., Tabl. Encycl. 1: 

 167. 1791. Based on Phalaris oryzoides 

 L. 

 Asprella oryzoides Beauv., Ess. Agrost. 2, 

 153. pi. 4. f. 2. 1812. Based on Phalaris 

 oryzoides L. 

 Leersia asperrima Willd. ex Trin., Acad. 

 St. Petersb. Mem. VI. Sci. Nat. 3 1 : 171. 

 1840, as synonym of L. oryzoides 

 Swartz. 

 Oryza clandestina A. Br. in Aschers., Fl. 

 Brand. 799. 1864. Based on Ehrhartia 

 clandestina Web. 

 Laertia oryzoides Gromow. in Trautv., 

 Act. Hort. Petrop. 9: 354. 1884. 

 Error for Leersia oryzoides Swartz. 

 Oryza clandestina forma inclusa Wiesb. in 

 Baenitz., Deut. Bot. Monatschr. 15: 19. 

 1897. Hungary. 

 Leersia oryzoides forma glabra A. A. 

 Eaton, Rhodora 5: 118. 1903. New- 

 buryport, Mass. 

 Oryza oryzoides Dalla Torre and Sarnth., 

 Fl. Tirol 6: 142. 1906. Based on Pha- 

 laris oryzoides L. 

 Leersia oryzoides forma inclusa Dorfl., 

 Herb. Norm. Sched. Cent. 55-56. 164. 

 1915. Based on Oryza clandestina forma 

 inclusa Wiesb. (Published as new, 

 Fogg, Rhodora 30: 84. 1928, same 

 basis.) 

 (3) Leersia virginica Willd., Sp. PI. 1: 325. 

 1797. North America. 

 Asprella virginica Beauv., Ess. Agrost. 2, 

 153. 1812. Based on Leersia virginica 

 Willd. 

 Leersia imbricata Poir. in Lam., Encycl. 



Sup. 3: 329. 1813. Carolina, Bosc. 

 Leersia ovata Poir. in Lam., Encycl. Sup. 



3: 329. 1813. North America. 

 Asprella ovata Roem. and Schult., Syst. 

 Veg. 2: 267. 1817. Based on Leersia 

 ovata Poir. 

 Asprella imbricata Roem. and Schult., 

 Syst. Veg. 2: 268. 1817. Based on 

 Leersia imbricata Poir. 

 Leersia virgata Raf., Bot. Seringe Bui. 1: 

 220. 1830 [probably error for L. 

 virginica]. Cited as type of the genus 

 Aplexia, but the name not transferred. 

 Homalocenchrus virginicus Britton, N. Y. 

 Acad. Sci. Trans. 9: 14. 1889. Based 

 on Leersia virginica Willd. 

 Homalocenchrus ovata Kuntze, Rev. Gen. 

 PI. 2: 777. 1891. Based on Leersia 

 ovata Poir. 



