.S21S PLANT MFK oF AI,A15AM.\. 



Ai.aiiaMa: Coast plain. Shallow pond luiar tluj wftsttTii kIiofo of Moliilo May 

 siiell road, 1885. Locality siiici' oliiiltMaltd i r. /imnni). A waif from lii^^lifr 

 latitudes. 



Typo locality not ascertained. 



li'oili. (icoi. .Snr\ . llirb. Molir. 



Potamogeton perfoliatus !.. Sp. I'l. 1 : iL'li. \7'>'A. 

 Gray, Man. ed. (5, 562. Chap. F1.44t>. Moronj;, M.in. Torr. Cliili, 3 : :«, /. 10. 



KUKill'K, GlATK.MAI.A, NiCAKACl'A. 



('anadian /one, Allef;;lic'iiian to l.onisianian area. Nova Scotia, New IWimswiek, 

 C^uebec. Ontario, New Kujiland, west to Michigan and Minne-iota, south t<t New .ler- 

 sey, western Tennessee, Florida (!), and Tex.is. 



Alabama: tloast plain. Gently llowing water. Mobile liiver delta. l)(>gliivor. 

 Abundant in thi.s locality. 



Tyi)e locality : '' Ilab. in Knropae laiubus lluvii.sijnc argilJosis." 



Ilerli. Geol. Surv. Herb. Mohr. 



Potamogeton crispus L. Sp. I'l. 1 : 12G. IToIJ. 



Gray, Man. ed. G, 5G2. Moroug, Mem. Torr. Club, 3 : 36, t. 44. 



Tk.MIM'.UATE EUKOl'E. 



Alleghenian to Louisiauiau area. New England to New .Jersey, Virginia, and 

 western Florida. 



Alabama : Coast plain. Gently flowing water. Mobile County, estuaries of Mohile 

 and Dog rivers. Flowers and matures fruit in July. 



Type locality: " Hab. in Europae fossis et rivulis.' 



Herb. Geol. Surv. Herb. Mohr. 



Potamogeton pusillus L. Sp. PI. 1 : 127. 1753. 



Gray, Man. ed. 6, 5G3. Wats. Bot. Calif. 2:128. Morong, Msm. Torr. Club, 3 : 15, 

 t. 53. 



Europe. 



Alleghenian to Louisianian area. Now Brunswick and Ontario to Saskatchewan; 

 New England (Mount Desert Island) west to Michigan, Missouri, Colorado, and 

 California; New .lersey to Florida, west to Texas. 



Alabajia: Coast plain. The form with filiform stem, setaceous, cuspidate leaves 

 (P. tenimsimus auct.), estuary Mobile River. Flowers in May. Infrequent. 



Type locality: "Ilab. in Europae paludibus." 



Herb. Geol. Surv. Herb. Mohr. 



Potamogeton diversifolius Kaf. Med. Rep. ser. 2, 5 : 354. 1808. 



rotamogcton hjhridus Michx. Fl. Bor. Am. 1 : 100. 1803. Not Thuill. 



Ell, Sk. 1 : 222. Gray, Man. ed. 6, 560. Chap. Fl. 446. Coulter, Contr. Nat. Herb. 

 2 : 456. Morong, Mem. Torr. Club, 3 : 48, t. 55. 



Alleghenian to Louisianian area. New England (Mount Desert Island) west to 

 Michigan, Nebraska, and Missouri, south to New Jersey, Florida, and the Gulf States, 

 extending to western Texas and New Mexico. 



Alabama: Central Prairie region toCoastplaiu. Frequent in pine-barren streams 

 and shallow ponds. Mobile, Baldwin, and Montgomery counties. Flowers in June 

 with mature fruit. 



Type locality of P. hyhridus: " Hab. in aquis stagnantibus Carolinae." 



Herb. Geol. Surv. Herb. Mohr. 



RUPPIA L. Sp. f 1. 1 : 127. 1753. Ditchgrass. 



Two or o species, aquatics, cosmopolitan outside of the Arctic zone. North 

 America, 2 species. 



Ruppia maritima L. Sp. PI. 1 : 127. 1753. 



Ell. Sk. 1:581. Gray, Man. ed. 6, 564. Chap. Fl. 445. Griseb. Fl. Brit. W. Ind. 506. 

 \\ats. Bot. Calif. 2 : 193. Coulter, Contr. Nat. Herb. 2 : 457. Morong, Mem. Torr. 

 Club, 3 : 55, t. 62. 



Europe, West Ini>ies. 



Canadian zone to Louisianian area. Along the seacoast. Nova Scotia, New 

 Brunswick, New England (Mount Desert Island), south to Florida and Texas; 

 Pacific coast. 



Alabama: Littoral belt. In brackish or saline pools, ditches. Mobile County, 

 Mobile Bay; abundant. Flowers and mature fruit in Juue. Annual. ? 



Type locality : " Halt, in Europae maritimis." 



Herb. Geol. Surv. Herb. Mohr. 



