WATER MILFOIL FAMILY. 639 
CIRCABA L. Sp. PI. 1:9. 1753. 
Seven species, boreal and cooler temperate regions, Europe, Asia. North America, 3. 
Circaea lutetiana L. Sp. Pl.1:9. 1753. ENCHANTER’S NIGHTSHADE. 
Ell. Sk. 1:7. Gray, Man. ed. 6,193. Chap. Fl. 143. 
Europe, NoRTHERN AFRICA, NORTHERN ASIA TO CHINA. 
Canadian to Carolinian area. Nova Scotia, Quebec; New England west to Min- 
nesota and the Rocky Mountains, south to the Ohio Valley, Missouri, Arkansas, 
Tennessee, and Georgia. 
ALABAMA: Mountain region. Rich woods. Madison County, Montesano, 1,500 
feet. Cullman County, 800 feet. Winston County, 1,200 feet. Flowers white; May. 
Not infrequent. Perennial. 
Type locality: ‘Hab. in Europae et Americae borealis nemoribus.” 
Herb. Mohr. 
HALORAGIDACEAE, Water Milfoil Family. 
PROSERPINACA L. Sp. P1.1:88. 1753. 
Two species, perennial aquatics, eastern North America. 
Proserpinaca palustris L. Sp. Pl. 1:88. 1753. Swamp MERMAID-WEED. 
| Ell.Sk.1:181. Gray, Man.ed.6,181. Chap. Fl. 143. Coulter, Contr. Nat. Herb. 
2:111. 
CusBa, MEXICO, GUATEMALA. 
Alleghenian to Louisianian area. New Brunswick; New England and New York 
west to Minnesota, south to the Ohio Valley, Missouri, Kansas, Arkansas, Florida, and 
Louisiana. 
ALaBAMA: Central Prairie region to Coast plain. Ponds and ditches. Montgom- 
ery, Escambia, Washington, and Mobile counties. Flowers May to August. Common, 
particularly in the pine-barren ponds of the Coast plain. 
Type locality: ‘‘ Hab. in Virginiae paludibus.” 
Herb. Geol. Surv. Herb. Mohr. 
Proserpinaca pectinata Lam. Tabl. Encycl. 1: 214, t. 50, f. 2. 1791. 
ComB MERMAID-WEED. 
Proserpinaca palustris var. Michx. Fl. Bor. Am. 1:76. 1803. 
Ell. Sk.1:182. Gray, Man. ed. 6, 182. Chap. FI. 143. Coulter, Contr. Nat. Herb. 
2:111. 
Carolinian and Louisianian areas. Southern New England along the coast to 
Florida, west to Texas. 
ALABAMA: Coast plain. Sandy pine barren swamps. Baldwin and Mobile coun- 
ties. Flowers May, June. Common. 
Type locality: ‘‘ Ex America septentrionale.” 
Herb. Geol. Surv. Herb. Mohr. 
MYRIOPHYLLUM L. Sp. Pl. 2: 992. 1753. 
About 20 species, perennial aquatics, cosmopolitan. North America, 12. 
Myriophyllum laxum Shuttlew.; Chap. Fl. 143. 1860. SourHERN WaTER MILFOIL. 
Louisianian area. Florida. 
ALABAMA: Lower Pine belt. Coast plain. Deep ponds. Washington County, 
Yellowpine. Baldwin County, Sibleys Mill. Flowers pale purple; August, Sep- 
tember. Rare. . 
Type locality: ‘Ponds and lakes, middle and west Florida.” 
Herb. Geol. Surv. Herb. Mohr. i 
Myriophyllum pinnatum (Walt.) B.S. P. Prel. Cat. N. Y.16. 1888. 
RovuGH WatTER MILFOIL. 
Potamogeton pinnatum Walt. Fl. Car. 90. 1788. 
Myriophyllum scabratum Michx. F]. Bor. Am. 2: 190. 1803. 
Ell. Sk. 2:588. Gray, Man. ed.6,181. Chap. Fl. 144. 
Carolinian and Louisianian areas. New Jersey, Illinois, Missouri, and Arkansas. 
ALABAMA: Mountain region. Coast plain. In deep gently flowing or almost 
stagnant water. Madison County, Huntsville, Big Springs (Baker §- Earle, 163). 
Mobile County, estuary of Dog River. Flowers purple, July. Rare. 
Type locality: South Carolina. 
Herb. Mohr. 
