oftKO Specks of Tonhjlitim. 347 



These species are clearly distinguishable by a character whicii, 

 though faithfully indicated by Rivinus and Jacquin, has not been 

 fixed upon by any botanist as a specific mark. In T. officinale the 

 radiant or dilated part of the marginal flowers consists of two 

 neighbouring petals, each of which has one large, and one very 

 small, lobe; in T. apuhnn there is only one radiant petal to each 

 flower, whose two very large lobes are equal. I would therefore 

 propose the following definitions of the two species in question : 



T. officinale, involucellis longitudine florum, foliolis ovatis incisis 

 crenatis, petalis radiantibus geminis ina^qualitbr bilobis. 



T. apiilum, involucellis flore brevioribus, foliolis laciniatis ; supc- 

 rioribus angustatis, petalis radiantibus solitariis aequalit^r bi- 

 lobis. 



The synonyms of the former are correctly given in both edi- 

 tions of Sp. PL as well as in Fl. Brit. 294 ; to which are to be 

 added Engl. Bat. t. 2440, and the unpublished figure in Fl. Grcec. 

 t. 267. There is every reason to suppose this the original To§$vXio» 

 of Dioscorides. ]f Columna had been as exact as usual, his figure 

 would have left us in no doubt respecting the character of the 

 petals. But as it is, enough may be discerned for our purpose ; and 

 the form of the leaves, the length of the partial involucrum, and the 

 figure of the seed, all agree with T. officinale, not with apulum. 



To the latter belong the synonyms of Rivin. Pentap. Irr. t. 2, 

 and Jacq. Hart. Vind. v. 1. 21. t. 53; which last is quoted in MSS. 

 by Linneeus in his own copy of 5/>. PI. This is likewise T. apulum 

 of Prodr. FL Grac. n. 631, from which however must be removed 

 the reference to Columna, and consequently the synonym of 

 Tournefort depending thereon ; Jacq. Hort. v. 1. t. 53, being in- 

 troduced in their stead. Bauhin's Seseli creticum minimum also, 

 being adopted from Columna, belongs to T. officinale. 



VOL. XII. 2 2 I cannot 



