96 | FLOWERING PLANTS 
been derived from halophytic plants, and require a soil com- 
paratively rich in alkalies (Kerner, 1. 74). Some cruciferous 
plants have seeds which yield oil, others seeds used as spices. 
CARYOPHYLLACEZ. 
This Order includes two main groups: (1) The Alsinee, 
represented by Stitchwort, already described (‘‘ Elementary 
Botany,” p. 81); (2) the Silenew, or the Pink and Carnation ~ 
group, of which the Red Campion may be taken as a type. 
65 66 

_ Fic. 65.—MEpDIAN VERTICAL SECTION, PIsTILLATE FLOWER oF RED 
CAMPION. 
Fic. 66.—MEDIAN VERTICAL SECTION, STAMINATE FLOWER. 
a, internode. 
Red Campion (Lychnis diurna) is a herb growing in damp 
places with stems swollen under the nodes and opposite, 
decussate leaves ; its inflorescence is a two-sided cyme. 
Flower : sepals 5, joined to forma tubular calyx, which marks 
off this group of the Caryophyllacee from that to which the 
Stitchwort belongs. 7 | 
The petals are 5, deeply divided, showing a well-marked 
division into blade and claw, at the junction of which are 
appendages, called ligules. The internode between the calyx 
and corolla is of considerable length, and should be noticed 

