Mr. J. Ball on the genus Leontodon. 9 



+ 1, -l-g. subsp. hyoser aides, foliis fere ad costam usque piimati. 

 fidis, pinnis angustis, siuuato-dentatis ; herba viridi, glaberrinia, 

 seu pilis nonnullis longiusculis adspersa. Legi in sinu alpino 

 Trift dicto, prope Zermatt in Valesia. 



Syn. L. hyoseroides, Welw. (?) 



— E. subsp. montanus, scapo crassiore, superne magis squamoso ; 

 foliis latioribus, minus divisis, viridibus ; involucri foliolis latio- 

 ribus. Acheuia videntur paululum longiora et magis muricata. 



Habui a monte Fouly in Valesia ab E. Thomas, formam vix diver- 

 sam legi in alpibus Sti Gothardi, et in Pyrenaeis orientalibus. 



Syn. L. dubius, Reich. Ajiargia dubia, Hppe. 



The ordinary forms of the typical species and of the subspe- 

 cies danuhialis and hyoseroides are easily distinguished from the 

 allied species by the irregular and unsymmetrical manner in 

 which the leaves are cut and divided ; the nearly entire-leaved 

 varieties however, especially those of the subspecies montanus, 

 approach very near to L. pyrendicus, as has already been re- 

 marked, but I believe that the characters given in the leaves and 

 the fruit will always suffice to distinguish the two species. The 

 entire absence of a subspecies so widely spread as L. danuhialis 

 from the region of the British flora, is worthy of particular re- 

 mark as bearing upon some of the arguments upon the question 

 of the origin of species derived from their distribution through 

 definite areas of space. 



6. L. caucasicus, Fisch. ? Radice pr8emorsa(?) ; scapo tenui glabro ; 

 foliis runcinato-pinnatifidis, lobis conformibus angulatis retrorsis, 

 cum involuci'o pilis raris simplicibus, vel nonuunquam furcatis, 

 adsperso ; involucri foliolis lineari-lanceolatis, acuminatis, achenio 

 erostri, vix (aut ne vix ?) muricato. 



Hab. in subalpinis Caucasi (D.C. Prod.). Habeo specimen unicum 

 incompletum a cl. R. F. Hohenacker. 



Syn. Apargia caucasica, M. Bieb. (?) ; Reich. Fl. Exc. 853 (?). 



The single imperfect specimen in my herbarium appears to me 

 to be in all probability the plant of Bieberstein, but there are 

 some slight differences between the description above given and 

 that of the author. My plant approaches very nearly in appear- 

 ance to some forms of L. hastilis + G, but I distinguish it by the 

 generally simple hairs, and still more certainly by the regular 

 and symmetrical divisions of the leaf, which resembles that of 

 Aposeris foetida, Less., but the lobes are more decidedly deflexed. 

 The character here noted in the divisions of the leaf is of much 

 importance in the Cichoracea. 



7. L. anomalus, nobis. Radice brevi, obliqua, parce fibrosa ; scapo 

 monocephalo, supra medium hinc inde squamis linearibus instructo, 

 cum foliis et involucro pilis rigidis bi-tri-uncinato-furcatis obtecto ; 



