Mr. Schweinitz on the Genus J^lola. 63 



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wise different, and that of thelacinlae of the Calyx still more 

 strikingly ; not to mention the stigma. Mr. Z. ColHns of 

 Philadelphia has before me, according to Nuttall, consider- 

 ed this a distinct species — and it is assuredly the sororia of 

 Wildenovv. — May. 



J^ote, The following species so amply described by Mr. 

 Nuttall and Michaux is the only one of this family, with which 

 -I am utterly unacquainted j as I have nevxr met with any 

 stcmless viola having yellowish flowers. It appears to nie to 

 form a transition from the bluish petalled acaulescent Violae, 

 to the white petalled ones ; which upon the whole are so 

 manifestly different, in their whole habit of inflorescence, that 

 a very good subdivision of the family might be established, 

 dividing it into : a) Violae acaules, floribus pa^ilionaceis. 

 majoribus, coerulescentibus: (b) Violae acaules, floribus 

 regularioribusy minoribus, candidis, between w^hich V, ro- 

 ttindifolia^ would be intermediate, and clandestina an appen- 

 dix. 



The white flowers sometimes and indeed frequently met 

 whh in all the foregoing species, all shew, that it is owing to 

 a fading of the blue that they are white, while those of the 

 proposed white subdivision as plainly demonstrate the con- 

 trary ; besides their difference of shape and size. 



11. Species. V, rotundifolia. Michaux. 



JVuttail p. 149- n. 7. Michaux p. 150. 



Elliott p. 298 n. 4. 



V. acaulis. Foliis crassis, magnis, orbiculato-cordatis, 

 sinu clauso, leviter dentatis, terrae adpressis, glabriusculis. 

 Petiulis pu]3escentibus. Floribus lutescentibus, in scapis 

 brevibus ante fol^rum expanslonem. Fetalis binis latera- 

 libus striatis, subbarbatis, strils 3, barba interruptis, infim& 

 minori, striis bifidis, lineis cartilagineis transversalibus. 

 Calycis laciniis oblongls oblusis. Stigmate glabro, rainorij 

 recurvo in stylo brevi crasso. 



Scapis brevibus. (Nuttall.) 



This remarkable species has been found on the shady 

 bunks of Wishahikon near Philadelphia by Mr. Rafinesque 

 and Nuttall; the latter has likewise met with it in the moun- 

 tains of North-Carohna. I have not been so fortunate as 

 yet. It is undoubtedly a very distinct species- Mr. Pursch 

 has very improperly cited Mlchau^t's pknt to his clandestina 

 wjth which it can have no affinity whatev*^r. 



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