Book  (Jan 2000)  Page(s) 230.  
 
Lambertiana Tree Peony. Makoy [no date given]... purple

Article (magazine)  (Jan 1955)  Page(s) 13.  
 
As the century drew to a close, the references became fewer and fewer. When the old growers died, the desire for large collections of Chinese tree peonies apparently died with thep:l. The varieties they had grown with the possible exception of P. papaveracea had full double flowers. They were so heavy that the stems could not properly support them, with the result that many of the flowers were hidden under the foliage. In addition to the varieties already mentioned, there were being grown under European names, one white, 'Lambertinae'...

Article (magazine)  (Jan 1955)  Page(s) 58.  
 
Alphabetical Check List of Tree Peony Names In  Public Collections And/or Available in Nurseries 1954-1955
'Lambertinae' (Mak. 1846), [Gardens] Whitnal Park Botanical Gardens, [Nurseries] Oberlin Peony Gardens

Website/Catalog  (1940)  Page(s) 6.  
 
European Tree Peonies
20. Lambertinae. Large; double; pure white shaded violet-pink...$5.00

Website/Catalog  (1924)  Page(s) 151.  
 
Pivoines en arbre...Lambertiana.- Grande fleur imbriquée, blanc légèrement lavé de lilas très clair

[no longer listed in the 1926 catalogue]

Book  (1917)  Page(s) 219.  
 
Lambertinæ, white, shaded with pink and purple.

Website/Catalog  (1910)  Page(s) 38.  
 
Paeonia arborea...Lambertina. Giant white bloom, violet-red base. Very floriferous.

Book  (1898)  Page(s) 107.  
 
La Pivoine en arbre a fourni à la culture un grand nombre de variétés horticoles, les unes obtenues en Chine, et d'autres en Europe...Quant aux variétés horticoles, elles sont si nombreuses que nous ne pouvons citer que les plus remarquables.
Principales Variétés Horticoles
Lambertina Makoy.—Grande fleur très pleine, blanc glacé lilacé.

Magazine  (30 Oct 1897)  Page(s) 411.  
 
Les Pivoines.—M. Ernest H. Krelage publie, dans le « Tijdschrift voor Tuinbouw » une intéressante étude sur les Pivoines, dont la maison Krelage et fils, de Haarlem, possède une collection renommée. [...] Comme bonnes variétés, il mentionne:
Lambertinae, blanc brillant, ombré de rose carné tendre, teinté de violet clair...

Magazine  (22 Jan 1887)  Page(s) 77.  
 
The Tree Pæony. 
...For the last twenty years or longer we have had to look to our French neighbours for new sorts of Tree Pæony, for since they have taken the work of hybridising and raising seedlings in hand they have supplied us with all the finest sorts.  Until now the list is long- too long, in fact, for names are given where very shadowy differences exist.
List of select Varieties.
Lambertinæ, blush-pink and violet