imbricate along the under fide of the {pike. Flowers aggre- 
gate in broad terminal fecund fpikes. Calyx perfiftent, crowned 
with a filvery white funnel-fhaped border. Corolla’ 5-petaled, 
purple; very deciduous, fo that in dried fpecimens the calyx 
only remains, which has given occafion to the flowers being 
defcribed as white. 3 ; | 
According to Gme.tn, this plant is common throughout 
Siberia. The dried leaves being ufed as a fubftitute for tea, 
it has obtained in fome parts a name, fignifying in Englifh 
Stone Tea. 
A hardy perennial, very fit for adorning rock-work, eafily 
propagated by feeds, which it produces freely. Introduced — 
into the Kew Garden in 1776, by Chevalier Murray. 
Our fpecimen was k ndly communicated by Mr. Loppipces 
of Hackney, who railed it from feeds received from Siberia. 
Flowers about Midfummer, ) 
