Website/Catalog  (1926)  
 
Ne Plus Ultra (Miel. 1856). Medium size, flat, loose, semi-double. Uniform pure mauve, tipped silver. Fragrant. Medium tall. Early mid-season. Three year old clump $1.25
 

Website/Catalog  (1926)  Page(s) 145.  
 
Pivoines herbacées...Nec plus ultra.- Beau rose frais nuancé plus vif.

Website/Catalog  (1925)  Page(s) 25.  
 
Ne Plus Ultra.— Midseason, very large full bloom of bright rose, ends of petals silvery tipped.

Magazine  (Nov 1911)  Page(s) 82-83.  
 
NE PLUS ULTRA.
Species — P. albiflora.
Originated by Miellez, 1856.
Donated by Farr.
Description of bloom — Type of bloom semi-double. Form of bloom flat, loose. Not differentiated. Not entirely transformed. Color (total effect) pure mauve; uniform color throughout 1 (181) ; bloom silver tipped, slight splash. Fragrance pleasant X. Blooming time early to mid-season. Medium size.
Description of plant— Habit of plant medium erect, medium tall, medium compact to open. Growth strong. Stem medium long, medium strong, red. Blooming habit free. Buds single, healthy. Foliage medium furnished, light green, medium size ; veins reddish green.
Commercial value — For cut bloom poor; landscape value medium. Variety as a whole medium.

Website/Catalog  (1911)  Page(s) 43.  
 
Paeonia sinensis...Nec Plus Ultra. Semi-closed cup form with ruffled filling and bud-like centre. White cup with flesh-coloured shading, cream filling, soft pink bonnet.

Website/Catalog  (1908)  Page(s) 3.  
 
DOUBLE HERBACEOUS PEONIES SERIES D. 60 cents each
Ne Plus Ultra, Miellez 1856 very fine, bright rose.

Book  (1907)  Page(s) 25.  
 
Regarding a list of twenty-four varieties of peonies which we consider best for cut flower purposes, we are pleased to name you the following list: Achillea, blush white, early; Alba Sulphurea, white, late; Alexander Dumas, pink and salmon; Beaute Francaise, flesh pink; Charles Verdier, lilaceous pink; Couronne d'Or, white; Delachei, purple crimson; Duke of Wellington, sulphur white; Duchesse de Nemours (Calot), white; Duchesse de Nemours (Guerin), pink, early; Festiva, white, early; Festiva Maxima, white, early; Humei Carnea, pink, late; Louis Van Houtte, crimson, late; Mme. Breon, rosy flesh white, early; Mme. Forel, pink, late; Nec Plus Ultra, pink; Mme. Coste, tender rose and white; Queen Victoria, flesh white; Jennie Lind, pink, early; Lady Bramwell, pink; Officinalis Rubra fl. pl., crimson, earliest; Officinalis Rosea Superba, rose pink, early; Rubra Triumphans, crimson, early.
Cottage Gardens Co.

Book  (1907)  Page(s) 45.  
 
Nec Plus Ultra. Guerin, 1844. Fine, bright rose. Used to be Ne Plus Ultra. We know not why changed.
 

Website/Catalog  (1888)  Page(s) 28.  
 
HERBACEOUS HARDY JUNE-FLOWERING CHINESE DOUBLE PAEONIAS. VARIETIES OF ALBIFLORA.
Ne plus Ultra, rich rose, 1s. 6 d.

Website/Catalog  (1868)  Page(s) 24.  
 
Paeonia herbacea (chinensis).
362 Nec plus ultra, lebhaft rosa, kugelförmig, schön...6 Sgr.