56 Mr. Schiveinitz on the Genus Viola. 



Tlie following species, no longer labor under the diffi- 

 culties of the former. Nevertheless several of them re- 

 quire close examination, In order to be properly distinguish 

 ed, This is the case between the two V. cucutlata and oh- 

 liqua, and again between villosa and cordifolia^ so much so, 

 that Mr. Nuttall thinl^s them the same. My observations 

 upon the two former have led me to conceive, that they 

 ought to be distinguished; as likewise the two latter, where 

 however, I am not perfectly acquainted with cordifolia^ 

 having seen only dry specimens- The characteristics I 

 have to propose, have been formed upon very often repeat- 

 ed examinations of hundreds of individuals, and will I be- 

 lieve be found to hold good in most instances; though pos- 

 sibly single plants may occur, of so indefinite an appear- 

 ance, that it may be difficult to determine them. But thi? 

 happens in almost every Genus which has a number of 

 Species. 



6. Species. V. ovata. Nuttall. 



Pursch. Fl. p. 173. n. 9 primulaefoUa exclus. Synon. 

 Willdenow. 



MuhL Cat. p. 27. n. 12 ciliata by Specimens; altogeth- 

 er the same. 



JYutt 



laefi 



is clear that he describes the true Linnean one and not the 

 present species. 



J^ew-York Cat. p. 28. n. 6. 



V. acaulis : Foliis oblique ovatis, acuminatis, basi sub- 

 cordatis in petiolos decurrentibus, eosque alatos reddenti- 

 bus, crenalis, ad basin saepe laceiato-dentatis, utrinque 

 pubescentibus (rarius aetate provectiori glabriusculis.) 

 Petiolis brevnoribus, statu junlori brevissimis, pilosis. Sti- 

 pulis radicalibus lato-Ianceolatis, oblique acurainato-truncatisj 

 in truncatura dentatis, ceterum cihatis, uncialibus, petiolum 

 basi amplectentibus. Foliis nervosis. 



Floribus maxime nutantibus, majusculis, pulchre coeru- 

 leis. Petalh ohovdXis I binis lateralibus longiuscule albo- 

 barbatis et subv^enosis ; infimo purpureo-venoso, barba 

 sparsa ; superioribus nudis, Cornu aut nectario obtuso. 

 Calycis laciniis subreflexis, pilosis, oblongo-lanceolatis, 

 postice elongatis attenuatis. Stigmate recurvo subrostrato, 

 ,non depresso. 



