Between 1803 and 1806 Le Vaillant also published in just the same style two volumes with the title of Histoire naturelle des oiseaux de Paradis et des rolliers, suivie de celle des toucans et des barbus, an assemblage of forms, which, miscellaneous as it is,.was surpassed in incongruity by a fourth work on the same scale, the Histoire naturelle des promerops et des guepiers, des couroucous et des touracos, for herein are found jays, waxwings, the cock-of-the-rock (Rupicola), and what not besides.
Fendlera Rupicola - A beautiful shrub allied to Philadelphus, reaching a height of 12 feet in its own land, but rarely much over 4 feet high with us.
It is very variable, and rupicola, minutiflorus, and scaberulus are well-known variations.
The var. rupicola flowers and seeds annually in the Rock Garden at Edinburgh Botanical Gardens, and seems hardier than the type.