.S2() PLANT T.II'K <>K ALABAMA. 



Manciu'ria, Japan, Wkst Indiks (Hkkmi'DA, CfiiA), Mr.xiroTo Rrazil. 



CiUiadiiiii /oiu> tf» LmiiHijiiiian aioa. Nova Scotia, (^iiolter, Lake Superior, (Ontario, 

 Ni>\v I'mjluinl (Mmiut KesiMt Island): all over the Atlantic States to Florida, alon;^ 

 tlio (Jnlf coast to Louisiana and Texas; Arkansas, Missouri. 



Ai.amama: Low, swaiiijiv, optii woods and thickets cverywiiori'. Mobile County. 

 April. 



Tyi>e locality: "Hal), in Marilaudia." 



llcrli. (leol. Surr. llerli. Mohr. 



Osmunda regalis L. Sjt. I'l. 2 : 1()G.">. 17.53. Royai, FKiiN. 



(Jray, Man. cd. 6, (JiW. Chap. Fl. r>!)8. Katon, Ferns X. A. 1:2(H1, /. .'.V. Coulter, 

 Contr. Nat. Herlt. 2 .5()8. Fnderwood, Nativi; Ferus, 121. 



KcHOPK, A.siA. AfpiCa, Cuisa, Mkxico to HiiAZtr,. 



Canadian zone to Louisianian area. Newfoundland, Nova Scotia, Ontario to Sa.s- 

 katchewan; from Lake Superior to Florida anil the (Milf coast, west to Texas, 

 Arkansas, Missouri. 



Alabama: Swampy borders of woods, ojjcu marshes. Common throughout tho 

 State. Auj::ust, Septemlier. 



Tyi)e locality : •'llab. in Fiiroi)a, Virginia ad liuvios." 



Herb. GeoL Surv. Herb. Mohr. 



SALVINIACEAE. Water Fern Family. 

 AZOLLA Lam. Encycl. 1 : 343. 1783. 



Four species, temperat<' regions, 1 North American. 

 Azolla caroliiiiaua Willd. Sp. PL 5:541. 1810. 



Gray, Man. ed. 6, 701. Chap. FL 602. Wats. Bot. CaliL 2 : 352. Coulter, Coutr. 

 Nat. Herb. 2:5.59. Underwood, Native Ferns, 128. 



Allegheniau to Louisianian area. Lake Ontario to British Columbia, southern 

 New York, west to Ohio, southern Illinois, southern Missouri, Arkansas, Arizona, 

 and California, south to Florida and Texas. 



Alabama: Coast plain, tloating iu still water. Moltile County, abundant in pools 

 and ditches. 



Type locality: "Hab. in aquis Caroliuae." 



Herb. Geol. Surv. Herb. Mohr. 



Order EQUISETALES. Horsetails. 



EaUISETACEAE. Horsetail family. 



EQUISETUM L. Sp. I'l. 2 : 1061. 1753. 



About 25 species, chielly of cooler temperate zones. North America, 13. 



Equisetum laevigatum A. Br. ; Engelm. Aiu. .Journ. Sci. 46 : 87. 1844. 



Smooth Hoksktail. 



Gray, Man. ed. 6, 677. Chap. Fl. .585. Milde, Act. Acad. Caes. Leop. 32, pt. 2 : 546, 

 t.32. Wats. Bot. Calif. 2:331. Coulter, Coutr. Nat. Herb. 2:559. Underwood, 

 Native Ferus, 135. 



Carolinian and Louisianian areas. North Carolina, Florida, Louisiana, Texas, 

 Missouri, Colorado, British Columbia, Oregon, and California. 



Alai$ama: Central Pine belt. Bibb County, Scottsville (J5^. A. Smith). August. 

 Rare. 



Type locality: "Hab. on poor clayey soil, with Andro])ogon and other coar.se 

 grasses, at the foot of the rocky Mississippi hills, on the banks of the river below 

 St. Louis." {N. Biehl, IMO.) 



Herb. Geol. Surv. 



Equisetum robustum A. Br. ; Engelm. Am, .Journ. Sci. 46 : 88. 1844. 



Stout Hoksetail. 



Gray, Man. ed. 6, 677. Chap. Fl. Suppl. 669. Wats. Bot. Calif. 2 : 330. Milde, Act. 

 Acad. Caes. Leop. 32, jit. 2: .532, t. 31. Underwood, Native Ferns, 135. 



Mexico, British Cohmbia, California, East Indies. 



Carolinian to Louisianiau area. Ohio, Illinois, southern Missouri, Louisiana, and 

 New Mexico. 



