Book  (Oct 2001)  Page(s) 329-330.  Includes photo(s).

Website/Catalog  (1926)  Page(s) 55.  
 
Protens, rose pourpre.

Website/Catalog  (1924)  Page(s) 107.  
 
Proteus (Florida). Larges fleurs doubles mauve foncé.

Website/Catalog  (1907)  Page(s) 66.  
 
Clematis in pots to plant out in spring and summer.
General Collection.
79 Proteus (florida), clear purplish rose.

Website/Catalog  (1907)  Page(s) 75.  
 
Proteus, lilac-pink, double and single blooms.

Book  (1898)  Page(s) 68.  
 
Variétés Horticoles
1er Groupe.—PATENS
Section. IV.—Patens à fleurs doubles.
Proteus (Noble). Fleur grande rose pourpre, à centre plus clair.

Magazine  (Nov 1881)  Page(s) 168.  
 
Some three or four years ago, Mr. Noble exhibited several other crosses, many of which appear to partake of the blood of C. florida, but nothing more has been seen of them till this year, when a group was exhibited at South Kensing ton, which showed that some of them, at least, are destined to secure a share of the public favour. In one of them, the property of fragrance appears to be more fully developed than had been previously noticed. We append a few notes on the several varieties :
PROTEUS.- A variable sort; the flowers are sometimes quite double, at other times semi-double; the colour is a purplish-lilac; they are about eight inches in diameter.

Magazine  (Jul 1876)  Page(s) tab 217.  
 
Mr. Noble has also received certificates this year for ...... C. Proteus, a rosy purple double or semi-double flower, which is likely to be the forerunner of a very useful race.