95 



the others by its shrubby stems. It is in this species, too, that the 

 disk, becoming greatly developed, surrounds the gynaeceum almost 

 entirely (Bailon, 1871). 



The pubescence on the leaves is a character of considerable varia- 

 tion. In some species it is fairly constant; in others very variable. 

 The color of the mature seeds varies widely with the different 

 species, from the brown of albiflora to black in some, and brilliant 

 red in corallina. 



The genus Paeonia is what systematic botanists call a critical 

 genus, and no two botanists seem to agree in regard to the status 

 of the various species. Several monographs have been written, of 

 which the following are the most important. This list includes 

 papers on classification as well as monographs : 

 1817. Anderson, Geo.: Monograph of the Genus Paeonia. Trans. 



Linn. Soc. vol. 12, p. 248. 

 1824. Botanical Register: A list of all species considered distinct 



by Kew Gardens' botanists. Bot. Reg. vol. 10, p. 819. 

 1831. Don, Geo.: Monograph of the Genus Paeonia, including 

 many descriptions of varieties. Don's Gardener's Dic- 

 tionary, vol. I, p. 65. 

 1835-37. Poiteau : Tableau of the Genus Paeonia. Revue Horticole, 



p. 228. 

 1851. Breck: Short Monograph. Breck's Book of Flowers, p. 68. 

 1862. Prince, M. R. : Short Monograph. The Gardener's Monthly, 



vol. 4, p. 35. 

 1884. Andre, Ed.: Synopsis of Genus Paeonia with descriptions 



of 22 species. Revue Horticole, pp. 487 and 5-10. 

 1884. Baker, J. G. : Monograph of the Genus Paeonia (" Notes on 

 Peonies"). Gardeners' Chronicle, vols. 21 and 22, N. S. 

 beginning with vol. 21, p. 732. 

 1890. Lynch, Irwin R. : New classification of the Genus Paeonia. 



Journ. Royal Hort. Soc. (London), vol. 12, p. 423. 

 1890. Douglas, J.: Short Monograph of the Single Flowered Peo- 

 nies. Gardeners' Chronicle, vol. 7, 3rd series, p. 764. 

 1890. Paul and Lynch: Botanical Division of the Genus Paeonia 



into Five Groups. The Garden, vol. 37, p. 562. 

 1892. Huth, E. : Monograph of the Genus Paeonia. Botanische 



Jahrbuecher (Dr. Engler's), vol. 14. 

 1895. Nicholson: Short Monograph of the Genus Paeonia. Nich- 

 olson's Dictionnaire d' Horticulture. 

 1900. Davis, K. C. : Article on Paeonia. Cyclopedia of American 

 Horticulture, vol. 3, p. 1188. 



