g6 THE STORY OF PLANT LIFE 



in which the pods do not open and are one-celled 

 and one-seeded. Woad is a type of this tribe, but 

 not described here. 



The other tribes of the indehiscent group include 

 Lomentaceae or the Sea Rocket tribe, in which the 

 pods are transversely two-jointed, the low^er joint not 

 opening and it may be seedless or not, or two-valved 

 and two- (or more) seeded, whilst the upper part 

 is indehiscent and one- to two-celled. Sea Kale and 

 Sea Rocket are included here, and we have described 

 the latter as a type. It has the lower joint two-edged 

 and one-celled, the upper sword-like, and one-seeded. 

 The White Charlock tribe is represented here by 

 White Charlock, which serves as our type. The 

 pods are long, one-celled, contain many seeds, or do 

 not open, or are jointed, the one-seeded portions 

 being indehiscent. 



The Cress and Cabbage group consists of herba- 

 ceous plants and a few under-shrubs, with leaves 

 alternate and without stipules. The flowers are 

 terminal in short racemes, or corymbose. There are 

 four sepals, possibly two (as the other parts) by 

 division. The stamens are six, four long, two 

 short, or absent. There is a single style, with a pin- 

 headed or lobed stigma. 



The fruit is a pod varying in form as above, 

 opening or not. 



The flowers are honeyed, with glands at the base 

 of the stamens. The sepals are erect and the honey 

 is thus concealed and protected from rain, the floral 



