Botanical Journal of the Linnean Society, Volume 28: 1-10 (1891)
On a Collection of Plants from Upper Burma and the Shan States
Brigadier-General H. Collett

p. 6
Only two species of Rosa were seen, and both are new. ...

The other new rose, Rosa Colleltii, Crépin, is less common; but where it occurs it grows vigorously and is a profuse flowerer. It is never found far from water, and seems to prefer the banks of streams, where I have found it growing almost to the exclusion of other suffruticose vegetation.

Gardeners’ Chronicle 31(809): 438-439 (June 28, 1902)
WILD CHINESE ROSES
Augustine Henry

Rosa Colletti, Crépin, discovered in the Shan States of Burma, is very close to R. microcarpa, agreeing with it in styles, appendaged sepals, &c. It is apparently a tomentose geographical form of that species, and is interesting, because we find in certain plants (such as Albizzia Julibrissin), tomentose forms as we leave China and get into the warmer regions of Burma and India.