Book  (21 Feb 2014)  
 
'Yellow Mutabilis'. This unforgettable sport of Mutabilis was found in Bermuda by Ronica Watlington on a plant in her garden in the late 1990s. It has since then been a favorite on the show benches at the Bermuda Rose Society. Much as I love Mutabilis, this sport has truly stolen my heart; the bright freshness of the yellow buds and the moment of strong yellow on the first day of the open flower are striking. The blooms fade to creamy yellow, white and then blush to pink, and as with Mutabilis it is the overall effect of the plant cyclying these colors continually that is endearing.

Book  (2013)  Page(s) 24.  
 
Bermuda Yellow Mutabilis Watlington, 1999
This rose was recognized as a sport of 'Mutabilis' by Helga Brichet during her visit to Bermuda...In 1999, it was propagated from a slip by Ronica Watlington. Buds are yellow, streaked with bright orange-red and open lemon-yellow with petals sometimes tinged with pale peach, especially on the reverse. On the second day the five-petalled blooms fade to a pale yellow-tinged white, while on the third day they become pale pink. In all other respects 'Bermuda Yellow Mutabilis' is similar to its parent.

Book  (2011)  Includes photo(s).
 
p74. Photo. 'Yellow Mutabilis', a sport of 'Mutabilis' discovered in the Bermuda garden of Jean Watson.

p75. Gregg Lowery: ...on my last visit to Bermuda I had an opportunity to observe a number of varieties that are little known and rare in commerce. Included among these are: ... and 'Yellow Mutabilis'. Most may be seen and admired in Roses in Bermuda, thanks to the Bermuda Rose Society and its courageous preservationists.

Magazine  (2007)  Page(s) 35. Vol 21, No. 2.  Includes photo(s).
 
'Bermuda yellow Mutabilis', discovered by Helga Brichet in Bermuda in 1999 and propagated by Ronica Watlington, has been registered and will be listed in Modern Roses 12. Photo by Liesbeth Cooper.