Cl-IAl.l.i. | 



i:i; ISSK \< I..1. 







I Will. BRASSICAl I 



Dl \..s..- 



II' rbac - plants, annual, biennial, or perennial, \> -r\ seldom suffi i i 



alternate. Flowers usually yellow or white, seldom purple, without bi 

 in 111 ■ Sepals i, deciduous, imbri- 



or vaivate. Petals I. cruciate, alter- 

 Date with the sepals. Stamens 6, of which 

 tun are shorter, solitary, and opposite the 

 lateral sepals; occasionally toothed ; and 

 four longer, in pair-, opposite the anterior 

 and posterior sepals, generally distinct, 

 mnate, or furnished with a 

 tooth on the inside. Disk with various 



n glands between the petals and the 

 stamens and ovary. Ovary superior, 

 unilocular, with parietal placentae usually 

 meeting in the middle, and forming a 

 ■purioua dissepiment. Stigmas '-', oppo- 



the placentae. Fruit a silique or 

 uiicule, I -celled, or spuriously 2-celled ; 

 I- or many-seeded ; dehiscing by two 

 valves separating from the replum ; or 

 indehiscent Seeds attached in a single 

 row bj a funiculus to each side of the 

 placenta;, general!) pendulous. Albumen 

 none. Embryo with the radicle folded 

 upon the cotyledons, which are occasion- 

 -lit i r lobed. 

 This Order is among the most natural 

 i hat are known, and it- character of 

 having what Linnaean Botanists call tetra- 

 dynamous Btamens is scarcely subject to 

 exc< ption. It has a mar relation to 

 1 irids, with which it agrees in the 

 Dumber of the stamens of some species oi 

 that Order, in the fruit having two pla- 

 ivnt.t ami a similar mode of dehiscence, 

 anil iii the quaternary number of the 

 'li\isi,.n- nf the flower. To Poppj worts 

 it is thought tn approach in the unusual 

 number of the petals and in the structure 

 of the fruit of some genera of that Order, such aa Glaurium and Chi I 

 siliquose-fruited Fumeworts it has also some analogy, and even with the 

 Order in the number of it- petals, supposing die common • 

 floral envelopes of Fumeworts to be correct, or in the binary dh 

 which the quaternary i- only a -li^ht deviation, upon the 

 ui Bpeaking of that Order Buf the totally different structm 

 i rucifers t. be associated in the same group with the latter. 

 < rucifers may be Baid to be characterised bj their d< > 

 symmetry observable in the relativi arrangement oftht 

 plant-, deviations which are of a \<i\ inter sting natui 

 thus : two stand opposite each of the anU riot 

 each nt the lateral sepals ; thi re being 6 



mid be normal. Now in what waj 



I double, one ol the series belonging to tl 

 a part imperfect I 1 am not awaj 

 offered, nor do I know of a better one. It appears to i 

 plete, bj the constant abortion of the stamens usually 



' Mil 



1 • \ I 1 1 .-.a Cananei se. 1. 



from the repluui . 



