ROCK-ROSE FAMILY 



6l 



3.* R. alba (Shrubby Rocket), with glaucous pinnate leaves^ 

 white flowers^ and usually 5 sepals, not uncommon in gardens, 

 occurs as an escape. — Fl. June — August. Biennial. 



Ord. VIII. — CiSTiNEiE. — The Rock-Rose Family 



Mostly shrubby, but sometimes herbaceous plants, often with 

 viscid branches : leaves opposite, entire 3 fiowers conspicuous, 



RESEDA LUTEOLA {Dycj- s Rccket). 



polysymmetric, white, yellow, or red, lasting a very short time; 

 sepals 3 or 5, unequal, the three inner twisted in the bud ; petals 

 5, twisted, when in bud, in a direction contrary to the sepals ; 

 stamens indefinite ; carpels 3, united ; ovary i -chambered ; style 

 single ; stiginas 3 ; capsule 3-valved. The plants of this Order are 

 almost confined to the south of Europe and North of Africa. 

 The only species which possesses any remarkable properties is 

 Cistus CreticuSy which affords the balsam called Gum Ladanum. 



I. Helianthemum (Rock-Rose). — Sepals 5, the two outer 



