Magazine  (Feb 1850)  Page(s) 51.  
 
Herbaceous Peonies.
It is just probable that some of your readers may not know that, in common with all our flowers, very many new varieties of Peonies have been raised from seed, prolonging the blooming season till June; these I propose to describe, not forgetting our old spring friends, too often neglected to be planted- all they require; for in all soils and in all seasons they will, with a constancy rare among garden-flowers, gladden our eyes in April with their rich and gaudy blossoms.
The very earliest species is the Pæonia tenuifolia, with its beautiful hair-like leaves, each stem crowned with a crimson globe; for such is the appearance of its flowers before expansion, nestling as it were among its leaves.  P. tenuifolia latifolia and P. tenuifolia fulgida bloom in succession; the latter is remarkable for the extreme brilliancy of its flowers.  So hardy are these species, particularly the first, and so durable in tenacious soils, that a root will endure for fifty years, and bloom constantly every season without cultivation.  I say this on the authority of my father and grandfather.  

Magazine  (1847)  Page(s) 166.  
 
We must not forget to include in this brief description, the varieties of P. tenuifolia, with beautiful fennel-like foliage, and of more humble growth than the preceding. Amongst our collection we have Paeonia tenuifolia latifolia, P. tenuifolia insignis, P. tenuifolia rosea ; but the gem of this section is Paeonia tenuifolia flore pleno, with large double crimson flowers; it is a most graceful sort, and cannot fail to become a general favourite.

Book  (1846)  Page(s) 60.  
 
Descriptive List of Pæonies.
I. Hardy Herbaceous Pæonies for the Flower Borders.
Botanical name: tenuifolia;  English name: fine-leaved;  Color: Red;  Height: 2 feet; Time of flowering: May.  

Book  (1841)  Page(s) 111.  
 
Paeonia tenuifolia, Pivoine à feuilles menues. Rouge. Mai.

Website/Catalog  (22 Mar 1840)  Page(s) 24.  
 
Mr. reynaerts, Pelletier.
1009 Paeonia tenuifolia

Website/Catalog  (1840)  Page(s) 42.  
 
Paeonia tenuifolia.....1 fr. 50 c.

Magazine  (Aug 1837)  Page(s) 237.  
 
Some Remarks on the herbaceous Paeonies, together with a description of most of the Species and Varieties, and a few observations upon their Propagation, Cultivation, &c. By the Conductor. (p. 283-292)
P. tenuifòlia.—A generally admired species, of a dwarf habit, but with very delicate, finely cut foliage, from whence its name. The flowers are single and deep red, and are produced on very short peduncles. The whole plant does not attain above a foot in height. It is a native of Siberia, and it is another of the single ones worth cultivating. It flowers from the 10th to the 16lh of June.

Magazine  (1836)  Page(s) 255.  
 
Addition à la liste des pivoines insérés dans le précédent numéro , page 228.
Je ne sais comment il s'est fait que la trente-deuxième espéce de pivoine et ses trois variétés n'ont pas impimées dans la liste ci-dessus indiquée. Je prie le lecteur de vouloir bien les y comprendre ainsi qu'il suit:
32. Tenuifolia, Lin.
- laciniata, W.
- insignis, Sab.
- latifolia, Sab.

Book  (1834)  Page(s) 371.  
 
(Pæonia tenuifolia laciniata Nob. – P. hybrida Pall.) Quamvis C. Pallas hanc plantam in Tauria sponte nascentem vidit, hybrida est tamen proles ex P. anomala et tenuifolia orta. Ad primam accedit caule elatiore, flore nutante et carpellis 5 radiatim patentissimis; ad P. tenuifoliam vero, segmentis foliorum linearibus carpellisque pubescentibus. Hybriditatis indicio notandum est quod seminanunquam profert.

Website/Catalog  (1833)  Page(s) 25.  
 
21 Paeonia Tenuifolia, [$] 1,00