Website/Catalog  (1938)  Page(s) 18.  
 
Polyantha. Gustel Mayer (P. Lambert 09). Medium size, almost double, beautiful red with yellow base. Blue-green broad foliage. Short, bushy.

Book  (1936)  Page(s) 466.  
 
Mayer, Gustel (polyantha) Lambert 1909; Crimson Rambler X M. P. Cochet X dunkelrote Hermosa; strawberry-red, base yellow, small to medium, fine form, chalice form, in clusters of 10, floriferous, continuous bloom, blue-green foliage, growth 6/10, bushy, short. Sangerhausen

Website/Catalog  (1914)  Page(s) 36.  
 
Polyantha Pompons (Bedding Types).
No pruning necessary except to remove the past season's flower stems.
Gustel Mayer... P. Lambert, 1910, vigorous. Red with yellow centre. Flowers small, full and produced profusely.

Website/Catalog  (1914)  Page(s) 11.  
 
Polyantha Gustel Mayer Lambert. Vigorous, upright, dark foliage, red with yellow base, floriferous, hardy. Small group rose

Magazine  (17 Jun 1911)  Page(s) 290.  
 
The Parentage of Roses.
The following list of the world's Roses and their parentage has been compiled by Mr. Robert Daniel, 38 Russell Road. Fishponds, Bristol, and by his kind permission we are enabled to publish it...
Gustel Mayer... Perpetual Pompon*, Lambert, 1909, Rambler X Mme. P. Cochet X Dunkelrote Hermosa

*i.e., dwarf Polyantha

Magazine  (1911)  Page(s) 103.  
 
Gustel Mayer, issue de Crimson Rambler X Madame P. Cochet x Rose Hermosa (Poly.); P. Lambert, obt

Magazine  (Oct 1909)  Page(s) 94.  
 
Neuste Rosen für 1909. (Die Beschreibungen sind die der Züchter.)
Züchter: P. Lambert, Trier.
Polyantha-Rosen.
Gustel Mayer. Strauch kräftig, dickholzig, aufrecht, 40-45 cm hoch, dunkles Laub, Blume fest und gefüllt, klein, schön rot, (Libertyfarbe) mit gelbem Grunde, kelchförmig, reich blühend, hart. Gruppen- und
Topfröschen. (Rambler X Mm. P. Cochet X Rote Hermosa.)