ROSA INVOLUTA 
Doniana Woods, both commoner than the type, which is often dis- 
tinguished by the name of var. Smithii Baker. Less common forms 
are Rosa gi'acilis Woods and Rosa invohita, var. Robertsoni Baker, 
while var. gracilescens Baker, var. laevigata Baker, var. Wilsoni Baker 
and var. IV ebbii Baker are very rare. Rosa involMtay var. Nicholsonii 
Crep. and var. Moorei Baker, are very probal)ly hybrids between 
Rosa spinosissima L. and Rosa EglanteiHa L. 
The group as a whole, although rare, is much more abundant in 
Britain than on the continent, where Belgium appears to be its head- 
quarters, but the forms found there differ considerably Irom the British 
forms. Rosa coronata Crepin is their chief representative. This has 
much more glandular leaflets and much fewer acicles than most of our 
British forms. 
Our typical form, Rosa invohUa, var. Smithii Baker, differs from 
the rest m its lower growth, more glabrous, less biserrate leaflets, very 
mixed armature, and pale, cup-shaped flowers. Smith gave it the name 
of invohita from its involute petals. 
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