Article (magazine)  (2014)  Page(s) 231.  
 
Within the section Paeonia, four Caucasian species are cited as yellowish to yellow - P. wittmanniana, P. macrophylla, P. mlokosewitschii and P. tomentosa. The flowers of P. wittmanniana and P. macrophylla start off white or very pale yellow. P. tomentosa remains an enigma for authors but is probably white-flowered. Only P. mlokosewitschii, described from Lagodekhi National Park in East Georgia, has pale lemon yellow flowers.

Article (magazine)  (2014)  Page(s) 233-234.  
 
On July 17, 1975, Per Wendelbo and Mostafa Assadi drove up Kuhhaye Tales mountain ridge in Iran, from Asalem to Khalkhal, where they found a Paeonia species (18544) growing at 1,900-2,100m. Hong de-Yuan, in his monograph Peonies of the World (Kew), places this collection under P. daurica subsp. tomentosa. ....According to Hong De-Yuan, Paeonia tomentosa (P. daurica subsp. tomentosa) is known from several localities in four districts. The northernmost is in Talysh, in the vicinities of Lerik and Lenkoran, from where several gatherings are known....In Iran P. tomentosa has been registered at three sites...

Article (magazine)  (2003)  Page(s) 148.  
 
Paeonia daurica ssp. tomentosa (Lomakin) D. Y. Hong, stat. nov. = Paeonia wittmanniana Stev. var. tomentosa Lomakin in Trud Tiflis Bot. Sada, 2: 283.1897;.....P. wittmanniana ssp. tomentosa (Lomakin) Busch, Fl. Caucas. Crit. 3(3): 14. 1901. P. tomentosa (Lomakin) Busch in Fomin and Voron.,Opred. Rast. Kavkaza; Kryma, 7. 1919;.....P. corallina var. triternata Boissier, Fl. Orient. 1: 97.1867.....The subspecies is characterized by leaflets nearly always densely covered with villose and/or pilose hairs on the lower surface, petals pale yellow but reddish at the base of a small proportion of individuals, and carpels mostly densely, rarely sparsely, tomentose. It mostly resembles ssp. wittmanniana, but differs from it in having leaflets mostly densely villose or pilose on the lower surface and carpels more or less tomentose. In contrast, ssp. wittmanniana possesses leaflets mostly sparsely villose or pilose and
carpels often glabrous. The two subspecies are geographically isolated by a long distance.
Paeonia daurica ssp. tomentosa is found in the Talysch Mountains of Azerbaijan in the Caucasus and in northern Iran. It grows in deciduous forests with soil derived from sandstone at altitudes from 1100 to 1800 m. We also found this subspecies growing on a pasture with scattered trees or shrubs. Punina (1987,1989) reported that the subspecies had the chromosome number 2n = 20, and thus it is a tetraploid.

Article (magazine)  (2003)  Page(s) 145.  
 
KEY TO SUBSPECIES OF P. DAURICA
1 Leaflets villose and (or) pilose on lower surface or glabrous; oblong or elliptic-oblong; apex rounded, acute to acuminate.
2 Petals yellow or yellowish white, but sometimes red at periphery or with a red spot at base: leaflets always villose or pilose.
3 Carpels and follicles tomentose.
4 Leaflets mostly densely villose or pilose and thus greyish on lower side...... ssp. tomentosa (Lomakin) D. Y. Hong

Article (magazine)  (2003)  Page(s) 137.  
 
Azerbaijan: Lerik, Orand, Zubu, (Mt. Talysh.), 1170 m Sandstones, pasture with bushes and young trees.... The type locality of P. tomentosa (= P. daurica ssp. tomentosa)