326 NEW JERSEY AGRICULTURAL COLLEGE 



the plate. This seems to be in the category along with the "four- 

 leaved" clovers so closely associated with "good luck" for the 

 finder. 



THE cat:mint (nepeta catakia (l.)). 



The common "catnip" is ordinarily considered as a species having 

 a large degTec of uniformity in its foliage, but when one is looking 

 for variations they are quite apparent in aspect of the whole plant 

 — color of stem and foliage and in thickness, hairiness and general 

 shape of leaf. As regards the latter, the six tips of branches shown 

 in the left two-fifths of Plate XXIII. are all from the same plant, 

 and the contrast between each pair, 1 and 2, 6 and 7, and 11 and 

 12, increases from top to bottom. With the fresh tips placed up- 

 right in glass vials, the picture was secured with a vertical camera, 

 before wilting has taken place. By making a study of a tip like 

 the one at 2 with its neighbor 3, it is seen that one of the chief 

 differences is in the variation, it being of the true pinnate type 

 in the former and quite largely palmate in the latter, and as a 

 natural consequence the leaf is ovate-lanceolate in 2 and broadly 

 ovate in 3. The serrations are quite unlike in the two, but in some 

 other oases the leaves become entire, and the leaves, &c., like those 

 of the broad-leaved plantain in margin and venation. The nearest 

 to this last-named condition are the leaves at 15 ; the very coarse 

 serrations of the leaves at 3, 5 and 11 are in strong contrast with 

 the fine notches shown at 2, 4, 12 and 11. 



Plants showing these wide differences in the leaves^, Avhen taken 

 to the gi-eenhouse and gi'own through the winter, soon presented 

 comparative uniformity. Spring tips show less variation than 

 autumn gTown stems. 



THE HE^VDS OF OX-EYE DAISY. 



The forty-eight heads of the common ox-eye daisy (Chrysantlie- 

 mvm Leucanthemuvi L.), shown in Plate XXIV., were gathered 

 one from each plant and from a single field the same day, with 

 the endeavor to show the variations that may be met with in the 

 ray flowers in this meadow pest. In number of rays, the range is 

 from none to forty-five, with the majority centering around thirty- 

 four. The size of the heads is indicated by the use of a strip of 



