Magazine  (Mar 2021)  Page(s) 53. Vol 43, No. 1.  Includes photo(s).
 
Margaret Furness:  Comtesse du Cayla.  photos below. By breeding it is mostly Tea, but it is usually classed as a China.

Article (magazine)  (2007)  Page(s) 404.  
 
Table 1. Comparison of key volatile components in representative cultivated Chinese roses and species. [adsorption volume by Solid Phase Microextraction (peak area, x10')]
DMMB: 1,3-dimethoxy-5-methylbenzene
TMB: 1,3,5-trimehoxybenzene

'Comtesse du Cayla'
Dihydro-beta-ionone 6.76
DMMB 42.3
TMB 0.58

Book  (2 Nov 2003)  Page(s) 20.  
 
Barbara May and Jane Zammit.  Rookwood Cemetery Roses.  
The following roses have been identified at Rookwood, primarily in the old and Heritage listed areas. Comtesse du Cayla

Book  (2003)  Page(s) 149-153.  
 
Wayne Winterrowd. 'Comtesse du Cayla'.
....it forms a low, slight bush seldom taller than four feet, rather sparsely clad in leaves that begin - as do those of Rosa chinensis 'Mutabilis' by being burgundy-colored and change as they mature to a dark olive green.
...At my garden, North Hill, in southern Vermont.... 'Comtesse du Cayla' which was brought here as a cutting from Christopher Lloyd's magnificent qarden at Great Dixter where it is one of the few roses he has chosen to retain from his mother's original collection.

Book  (2001)  Page(s) 35.  
 
Hybrid China. Rated 6.5

Book  (2000)  Page(s) 174.  Includes photo(s).
 
‘Comtesse du Cayla’ = Chine. Pour certains, c’est le plus beau des rosiers de Chine… La floraison se renouvelle tout l’été, du moins tant qu’il fait beau, car cette comtesse est une frileuse éprise de grand soleil et qui s’étoile en son absence… rameaux minces à feuillage vert bronze… Cueillie en bouton à peine éclos, la fleur tient longtemps en vase… Guillot, France, 1902. (Semis de Rival de Paestum x Mme Falcot) x Mme Falcot.

Book  (1999)  Page(s) 174.  Includes photo(s).
 
Comtesse Du Cayla Old, China, Orange blend. Repeat flowering.
For many, this is the best of all the Chinas. It has purple nodding stems that carry large, loosely cupped, flat blooms of carmine tinted orange with yellow undersides. The highly scented blooms are reminiscent of sweet peas and tea and the flowering season lasts as long as the warm summer weather permits. ‘Comtesse du Cayla’ does best in full sun, looking rather straggly in the shade, and the thin canes and glossy bronze-green foliage forms a compact bush to 3 ft (1m) tall. This is an excellent rose to plant among perennials because of its handsome appearance and constant bloom. The cut flowers, especially if taken when in bud, last a long time indoors. The countess, for which this rose was named, was a mistress of Louis XVI of France. Zones 7-11. Guillot, France 1902. (Seeding of ‘Rival de Paestum’ x ‘Mme. Falcot’) x ‘Mme. Falcot’.

Magazine  (1999)  Page(s) 12. No. 17.  
 
Martyn Rix. China Roses.
'Mme. Laurette Messimy' (1887) and 'Comtesse du Cayla'' raised by Guillot in 1902, share the same parentage, said to be ('Rival de Paestum' x 'Mme. Falcot') x 'Mme. Falcot'.  This makes them two thirds Tea and a third an unusual pale China.  'Rival de Paestum' is a small, almost white rose, often classed as a Tea, so by parentage both should perhaps be classed Teas.  In Comtesse du Cayla the leaves are bronzy, the flowers coppery orange and pink, reddening as they age, especially in full sun. Its scent is also reported to be good, not usually a characteristic of Chinas; the flowers are semi-double and open rather flat. Mme Laurette Messimy is paler, pinkish with yellow centre, and loose, quilled petals.

Book  (1995)  Page(s) 45.  
 
Grows at Sissinghurst.

Book  (Nov 1993)  Page(s) 57.