62 



CISTfNE^E 



either smaller or wanting ; petals 5 ; stamens numerous ; ovules 



many ; capsule 3-valved. (Name from the Greek helios, the sun, 



and antlws, a flower, because the flowers expand in the sunshine. ) 



1. H. Chamcecistus (Common Rock- Rose). — A beautiful little 



heuAnthemitm CHAMjEcisTus (Common Rock-Rose). 



prostrate undershrub ; leaves with fringed stipules, oblong, green 

 above, hoary beneath j flowers in bracteate racemes, 1 inch across, 

 yellow ; the two outer sepals very small, the inner apiculate ; the 

 stamens, if pinched, spread out, and lie down on the petals. — Dry 

 places j common. — Fl. July — September. Perennial. 



There are four other British species of Helidnthemum, which are 

 all of local occurrence, and rare : H. guttdtum (Spotted Rock- 

 Rose), a herbaceous annual, with ebracteate yellow flowers, with a 

 blood-red spot at the base of each petal, found in Cork and the 



