336 Jussieiiean, or Natural, Si/ stem of Plants, 



called ladanum is the produce of some kinds of Cistus ; it 

 exhales a fragrant perfume when burnt, and possesses slightly 

 tonic and stomachic properties. 



Hudsonfa L. Cfstus Tou. Helianthemum Tou. Lechea L. 



Section 3. Ovarium solitary ; Placenta central. 



Order XX. CARYOPHY'LLEJE. 



These consist of herbs or low undershrubs, inhabiting the 

 mountains and pastures of all parts of the world. In Europe 

 and Siberia they are particularly abundant, and least so in 

 Africa and South America. Many are common weeds, as 

 most of the cerastiums, spergulas, and others. Several of the 

 silenes are very ornamental, and among the arenarias are to 

 be found some dwarf species of considerable elegance. But it 

 is in Dianthus that the pride of the order consists : this genus 

 is almost unrivalled for the brilliancy of its colours, the neat- 

 ness of its foliage, and the perfume of its flowers. From the 

 finest of its species the title of the order has been derived. 

 The virtues of Caryophylleag are slight. Saponaria officinalis, 

 and one or two others, have been praised for possessing Anti- 

 syphilitic properties ; the root of Silene virginiana is reputed 

 anthelminthic ; and the Arenaria^eploides, being fermented, is 

 used by the Icelanders for food. 



Tribe 1. Sile'ne^. 



Gypsophila L, Cucubalus L. Agrost^mma L. 



Dianthus L. Silene L. Velezia W. 



Saponaria L. iychnis L, Z)rypis L. 



Tribe 2. Jlsi'ne^. 



Ortegirt L. £latine L. Sp^rgula L. Arenaria L. 



BufFonjfl! W. ilibllugo L. Larbrea St. Hil. Cerastium L. 



Sagina L. Pharnacemw W. Stellaria L. Cherieria Hal. 



Mcehringia L. £^ol6steum L. -4lsine L. 



Order XXI. iFNEiE. 



Separated by M. Decandolle from Caryophylleae, from 

 which it is well distinguished by its fruit having several cells, 

 or, in the language of the botanist just named, being formed 

 by the cohesion of several carpella. Most of the species 

 are pretty plants, bearing yellow, blue, or white flowers. They 

 are of immense importance in the world, on account of the 

 tenacity of their fibres when made into flax. The seeds of 

 common flax are between mucilaginous and oily ; the leaves 

 of Zinum catharticum and L. selaginoides, the latter a native 

 of Peru, are purgative. 



Linum Bauh Radiola Dil. 



\ 



