42 AMERICAN MIDLAND NATURALIST 



Grantia Griff, ex Voigt. Hort. Suburb. Calc. 692, (1845), 

 et Notul, III, p. 223, (185 1), not Grantia Bois. Diag. Ser. I, VI, 

 p. 79, (1845). 



Horkclia Reichenb. ex Bart. Ord. p. 76, (1830), not Horkelia, 

 Cham. & Schlecht. in Linnaea, II, p. 26, (1827). 



Bruniera columbiana (Karst.) Nwd. Am. Mid. Nat. Vol. II, 

 p. 306, (1912). 



Wolffia columbiana Karsten, Bot. Untersuch. I, p. 103, 

 (1865-67). 



Grantia columbiana (Karst.) MacM. Metaspermae Minn. p. 

 134, (1892). 



Very common everywhere especially with Hydrophace minor. 

 Notre Dame, Lakeville, Chain Lake, Benton Harbor, St. Joseph, 

 Millers, Tamarack. It is never found in pools that dry up com- 

 pletely even part of the season. 



Bruniera punctata (Griseb.) Nwd. 1. c. 

 Wolfia punctata Griseb. Fl. Br. W. Ind. p. 51, (1864). 

 Wolffia brasiliensis Wedd. Am. Sci. Nat. Ill, 12, p. 170, (1849) 

 Notre Dame, Ind., rather scarce. South Bend, Pond near 

 Rum Village. 



HYDROPHACE Haller, Helv. 3. p. 68, (1768). [Buxbaum, 

 cent. 11. t. 37, f. 2.] 



Lenticula and Lcnticularia Micheli Nov. PI. Gen. p. 15, p. 

 II, not always that of the other pre-Linnaean older authors.' 

 Lens palustris and Lenticula palustris or aquatica of the older 

 botanists; but perhaps a generic specific binary name. Lemna 

 Dalechamps (1580) Linnaeus Syst. Nat. (1735). Gen. PI. p. 325, 

 (1737), also p. 417, (1754)- Sp. PI. p. 970, (1753) not Lemma 

 or Lemna Theophrastus = Mam/m vulgaris Linn. Staurogeton 

 Reichb. Norm. 33, (1841) in part. 



' The name Lenticula palustris or Leus palustris of the pre-Linnaean 

 writers seems to me to be inadmissable because of the similarity to the 

 recognized genus Lens. Lemma Theophrastus was certainly not Lemna 

 Linn., but rather Marsilia vulgaris. Lemna Linn, is the (fa/.u'^ u l-\ riuv 

 reXridrwv of Dioscorides. It seems best to disregard Lenticula and Lens 

 also because the names seem to be generic-specific binary names like Lilium 

 Convallium. Spe. Bubani, P. Flora Pyrenaea 4, p. 22, 23, (1901). 



