4t?(t I'l.ANl' 1.11 I. or AJ.AHAMA. 



Aiisaema diacontiunul-.) Stiiott, Mrlot. 1:17. 1H:{2. DitAiiuN-itooT. 



.hum tliitiiinliiint 1,. Sp. l'1.2:Hr)l. ITHM. 



i:il. .Sk.2:(;L".t. <iniy, Man. td. C, r.lil. Chaj). Fl. '140. Coulter, ( oiii r. N:it. llcilt. 

 2 : I.M. 



Allojihoiiian to Loui«iani:m area. Ontario; New EM;ilaml, west to .MimicHota, 

 soutli toOliio Valley; Florida to oaHtorn TexaH. 



Al.AHAM.v: Moiiiitaiii region to Lower Pino bilt. Kieli copses. Cullman C'onnty. 

 'riUHiMlousa ('(umty {E. J. Smith). Clarke County, Ciioctaw Corner. April; uot 

 fre<iiniit. 



I'ype locality: '" lial>. in America." 



Herb. (ieol. Snrv. ll.rli. Mohr. 



LEMNACEAE. Duckweed Family. 



SPIRODELA S.hleid. l.inna.a. 13:;i!tl. I.SL'it. Duckwkkd. 



A sinj^ie species, of teniixrate rej;ious. 

 Spirodela polyrhiza (L.) Sibleid. Linn.iea, 13::>'.>1. 1839. 



f.nitiia jiolifi-liha L. Sp. PI. 2 : 970. 17.".3. 



Ell. .Sk. 2:r)18. Gray, Man.ed. 6, 552. Cliap. Fl. 113. Coulter, Coutr. Nat. Herb. 

 2 : 153. 



EiROPi;, SiBKKiA, Asia. Aistralia, Maueika, Noktii and South America, 

 \Vi:sT Lndie.s to Central .\meuica. 



liorcal rejfion to Louisiauiau area. Canada from the Atlantic to the Pacific Ocean. 

 TliroujjliDut the Atlantic Eastern States, west to Texas and Arkansas. 



Alaijama: All over the State. Stagnant waters. Mobile County ; frequent. 



Type locality: " llab. in Europae paludibus, lossis." 



Herb. Geol. Surv. Herb. Mohr. 



LEMNA L. Sp. PI. 2 : 970. 1753. 



Six species, of temperate and warmer regions. Floating, almost cosmopolitan, 

 plants. 



Lemiia minor L. Sp. PI. 2 : 970. 1753. 



Ei'ROi'E, Africa, Australia, North America, West Indies to South America. 



Canadian zone to Louisianian area. All over the continent to north latitude 58-. 



Alabama: Over the State in pools, stagnant water; common everywhere. Mobile 

 County; F»'bruary, March. 



Type locality : "Hab. in Europae aquis quietis." 



Herli. Mohr.' 



Lemna trisuica L. Sp. PL 2 : 970. 1753. Star Duckwked. 



Gray, Man. ed. 0, 552. Coulter. Contr. Nat. Herb. 2 : 4.53. 

 Distribution as wide as that of the last. 

 Europe. 



Alabama: Over the State. In stagnant water. Mobile County. March. 

 Type locality : " Hab. in Europae sub aquis pigris puris." 

 Herb. Mohr. 



MAYACACEAE. Mayaca Family. 



MAYACA Aubl.Pl.Guian. 1:42. 1775. 



Seven species, tropical and subtropical aciuatics, America. Atlantic North Amer- 

 ica, southein, 1 species. 



Mayaca aubleti Michx. Fl. Bor. Am. 1 : 26. 1803. Mosslike Mayaca. 



Mat/acajluviatilis Aubl. PI. Guian. 1 : 42. 1775. 



M. 'mwhauxii Schott & Endl. Melet. 1 : 24. 1832. 



Ell. Sk. 1 : 50. Gray, Man. ed. 6, .538. Chap. Fl. 499. Griseb. Fl. IJrit. W. Ind. .526. 



We.st Indies, Mexico, Guiana to P>razil. 



Louisianian area. North Carolina to Florida, west to Texas. 



Alabama: Central Prairie region to the coast. Shallow ponds, springy places, 

 wetbanks, pine-barren streams. EnlaulaCounty (A'. A. Smith). Clarke, Washington, 

 Mobile, and Baldwin coniiti<'S. Flowers lilac, .June to July; abundant. Perennial. 



Type locality: "Hab. a Carolina ad Floridam." 



Herb. Geol. Surv. Herb. Mohr. 



