NOTES ON OUR LOCAL PLANTS 21 7 



MnEmion Spach Hist. Nat. Veg. 5, 510, (1836). 



Sufficiently important diagnosis will be seen to be included 

 in the key to the genera at the beginning of this study. 



Mnrmion Tricolor Spach. Hist. Nat. Veg. 5 p. 515, (1836). 



Viola tricolor Dodonaeus, Coron. p. 17, (1568). Pempt, p. 

 158. (1583) also Linnaeus Sp. PI. p. 935, (1753). 



Mnemion arvense (Murray) Nov. Comb. 



Viola arvensis Murray, Prodr. Stirp. Goett. p. 73, (1770). 



Mnemion Rafinesquii (Greene) Nov. comb. 



Viola tenella Muhl. Cat. 26, (1813). Not Poiret (1810). 



Viola Rafinesquii Greene, Pitt. IV. p. 9, (1899). 



In conclusion we feel that the characters of the cleistogamous 

 flowers of the plants known as violets seem sufficient to warrant 

 the segregation suggested. We have refrained, however, from 

 making any transfers of the numerous species of the groups because 

 we were unable to examine the flowers of them all. We have reason 

 to feel confident that the event may more than prove the sugges- 

 tion here outlined, and should this be the case the study of violets 

 by their cleistogamous flowers will further the knowledge thereof, 

 and give us at least a very good means of distinguishing the groups. 



Dept. of Botany 

 University oj Notre Dame, Ind. 



NOTES ON OUR LOCAL PLANTS.— V. 



BY J. A. NIEUWLAND. 



Subclass 2. DICOTYLEDONEAE. 



D. C. Syst. L, (1818), also Prodr. L, p. i, (1824). 



Dicoiyledones Haller Enum. PI. p. XXI., (1753); also Boer- 

 haave Index. PI. Alt. 2, p. 171, (1727.) 



Order 15. PIPERINAE. 

 Bartling, Ord. Nat. p. 83, (1830). 



Pipcrales Engl. Syllab. p. 93, (1892), also Engler and Prantl. 

 Pflanzenfam. Nachtr. p. 345, (1897). 



Family 37. SAURUREAE Rich. Anal. (1808), Bartling, 

 1. c. p. 84, also Lindley, Int. Veg. Syst. p. 172, (1830). 



