MULTIJUGATE TYPES. 



183 



T. 



16/26/42 



T' 



1^(20 + 33) 



16/26/42 



r 



I 



16 + 26 



13 + 21 



16+26 



16+26 



T". 



(8 + 13 



\ malformed 



(21 and irreg. 

 ( 14 + 18 irreg. 



( 13 + 21 

 ) 13 + 20 



j 13 + 21 

 ) undevl. 



13+21 

 undevl. 



; 16+26 

 imdevl. 



This plant thus showed a distinct tendency to reveil; to normal (13 + 21) in the 

 ultimate branches ; the irregidaritiea are otherwise very slight. 



(4.) Dipsacus laciniatus, an average plant grown in the open, 8 feet high ; the 

 terminal oapitulum, 100 mm. by 50 mm. over the spines, was irregidar, the 

 number of curves counted round the broadest diameter being (26 + 38) ; 

 23 lateral capitula were borne on branches of the first, second, and third 

 degree : — 



T- 



T". 



r 



16 + 26 



f 23 + 37 



26 + 



38-1 



[25 + 40 



( 26 + 42 

 \ 25 + 40 



( 21 + 34 

 ( 22 + 31 



( 16 + 26 

 (21 + 34 



<| (20 + 31) (super.) 

 ! 16 + 26 . 



(18 + 31 (irreg.) 

 j 22 + 26 (irreg.) 



16 + 26 



17 + 24 . 



16 + 26 



17 + 26 



T'"- 

 16 + 26 

 16 + 26 



13 + 21 

 16 + 25 



3 16 + 25 

 ( 16 + 26 



Here also the constancy to the (16 + 26) type is remarkable ; while individual 

 irregularities are small, there is in several cases, apparently without rule a 

 marked reversion to capitula of the 13/21/34 series, and as inD. syhestris 

 the leading heads are more usually anomalous. 



(5.) Dipsoteus pilosus, a strong plant 7 feet high ; the terminal oapitulum 

 spherical and 50 mm. in diameter over the .spines showed around its 



