WATER-PLANTAIN FAMILY. 329 



ZANNICHELLIA L. Sp. PI. 2:969. 1753. Horned Pondweed. 



Nine species described, jirobably all forms of one. Cosmopolitan aquatics. 

 Zannichellia palustris L. Sp. PI. 2 : 969. 1753. 



Gray, Man. ed. 6, 565. Chap. Fl. 445. Wats. Bofc. Calif, 2 : 193. Coulter, Contr. 

 Nat. Herb. 2 : 4.58. Morong, Mem. Torr. Club, 3 : 57, t. 64. 



Europe, Asia, Africa, Philippines, Australia. 



Canadian zone to Louisiauiau area. Nova Scotia, New Brunswick, Ontario t<> Sas- 

 katchewan; New England w^est to Minnesota, soutli to J^lorida and Texas. 



Alabama: Coast plain. Pools and still-flowing water, fresh or brackish. Mobile 

 County, estuaries of Mobile and Dog rivers. Baldwin County, Josephine. Copious. 

 Flowers in June and July. Annual. ? 



Type locality: " Hab. in Europae, V'irginiae fossis, fluviis." 



Herb. Geol. Surv. Herb. Mohr. 



NAIAS L. Sp. PI. 2 : 1015. 1753. 



Ten to 12 species, temperate and tropical regions Northern Hemisphere. North 

 America, 4 species. 



Naias guadalupensis (Spreng.) A. Br, Seemann's Jouru. Bot. 2:276. 1864. 



CauUnia f/uadalupensis Spreng. Syst. 1 : 20. 1825, 



Naias fiexilin var. fuHiformis Chap. Fl. 444. 1860. 



Moroug, Mem. Torr. Club, 3 : 60, t. 68. 



West Indies, Mexico. 



Louisiauian area. W^estern Florida to Louisiana. 



Alabama: Gently flowing deep water. Mobile County, estuaries of Mobile and 

 Dog rivers, forming in large part with Ruppia, Zannichellia, Poiainoyeton pcrfoJiatus, 

 Vallisneria, and Nitella, the dense masses of subaquatic vegetation. Mature fruit 

 in -Inly. Perennial. ? 



Type locality : " Insula Guadalupa. Bertero." 



Herb. Geol. Surv, Herb. Mohr, 



SCHEUCHZERIACEAE. Arrow-Grass Family. 



TRIGLOCHIN L. Sp. PI. 1 : 338. 1753. Arrow-Grass, 



Marsh plants of frigid and temperate regions. About 10 species. North America, 

 3 species. 



Triglochin striata Ruiz & Pav. Fl. Peruv. 3 : 72. 1802, 



Triglochin triandra Michx. Fl. Bor. Am. 1 : 208. 1803. 



Ell. Sk 1:417. Gray, Man. ed. 6, 557. Chap. Fl. 447. 



South America to Brazil, Oceania, South Africa. 



Carolinian to Louisianian area. From Maryland along the coast to Florida and 

 Louisiana. 



Alabama: Coast region. Fresh or brackish marshes. Mobile County, marshy 

 banks, mouth of Dog River. Baldwin County. Flowers June and July. Not rare. 

 Perennial. 



Type locality : " In Peruviae lacubus et inundatis ad Surco, Miraflores, Lurigancho, 

 Magdalena et Limae tractus." 



Herb. Geol. Surv, Herb. Mohr. 



ALISMACEAE. Water-Plantain Family. 



ALISMA L. Sp. PL 1:342, 1753. 



Ten species; cooler and warmer temperate zone, Europe, America 

 Alisma plantago-aquatica L. Sp. PI. 1:342, 1753. Water Plantain. 



Ell. Sk. 1 : 434. Gray, Man. ed. 6, 554. Chap. Fl. 448. Wats. Bot. Calif 2 : 200. 

 Coulter, Contr. Nat. Herb. 2 : 454. 



Europe, Asia, Africa, Australia, Mexico. 



Canadian zone to Louisianian area. From Nova Scotia across the continent to 

 the Paciiic coast, south to Florida and the Gulf of Mexico. 



