172 JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



abundant crop of red flowers which nestle on the surface of the 

 rounded leaf-blades. 



Asiatic Species (neither Himalayan nor Chinese) of the V emails 



Section. 



Yellow flowers. 

 P. acaulis, (Linn.) Hill 

 P. Columnae, Ten. 

 P. cordifolia, Ruprecht 

 P. heterochromia, Stapf 

 P. macrocalyx, Bunge 

 P. Pallasii, Lehman n 

 P. pseudoelatior , Kusnetzow 

 P. Ruprechtii, Kusnetzow 



Purple and Pink flowers. 

 P. amoena, Bieb. 

 P. Juliae, Kusnetzow 

 P. Sibthorpii, Hoffmannsegg 



Section Farinosa. 



Through forms of P. sibirica, J acq., and the microform P. davurica, 

 Spreng., of P. farinosa, Linn., this section appeals to cultivators. 

 The forms have been in our gardens since the thirties of last century. 

 P. davurica, Spreng., is the P. altaica, Lehm., and the oldest of the 

 plants cultivated under that name as I have explained under section 

 Vernalis. P. longiflora, All. — an old favourite of cultivation — is now 

 recorded as a Caucasian and Armenian plant, but its area is Europe. 

 P. darialica, Rupr., is a small farinose species of the Caucasus, and has 

 come into gardens, I think, through Sundermann within the last few 

 years. P. capitellata, Boiss.,is a very mealy dwarf species of Persia 

 and Afghanistan, and has its flowers crowded in a mealy head, on the 

 outside of which the purple tips of the calyx-lobes are conspicuous. 

 It might be a useful rock plant, for it grows at high altitudes. The 

 dwarf farinose microform P. borealis, Duby, completing the list, comes 

 into it as a plant of the extreme north-west of Asia. Perhaps P. 

 ossetica, Kusnetzow, from the Caucasus, belongs to the section. 



Asiatic Species (neither Himalayan nor Chinese) of the Farinosa 



Section. 

 All lilac flowers. 

 P. borealis, Duby P. farinosa, Linn. 



P. capitellata, Boiss. P. longiflora, All. 



P. darialica, Rupr. (fig. 82) P. ossetica, Kusnetzow 

 P. davurica, Spreng. P. sibirica, Jacq. 



Section Auriculata. 



In this section come good garden plants. P. algida, Adam, 

 has been long known, also P. auriculata, Lam. They are plants 

 of the Caucasus to Afghanistan and Altai. P. luteola, Rupr., said to 

 have come into cultivation through Peter Buck, of St. Petersburg 

 in 1867, i s one of the hardiest of plants and deserves more attention than 



