36 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



157. Tombeanensis, Boiss. Tyrol. 



158. Vandellii, Sternb. S. Europe. 



159. Burseriana, Linn. Cent. Europe. 



160. sancta, Griseb. Mt. Athos. 



161. juniperifolia, Adams. Caucasus. 



Section 15. — Porphyrion, Taitsch. 



163. oppositifolia, L. N. temp. zone. 

 Kudolphiana, Hornsch. 



164. biflora, All. Through Europe. 



165. macropetala, Kern. Alps. 



166. retusa, Gouan. Europe. 



List of the Principal Cultivated Hybrid Saxifrages, with their 

 Parentage. 



1. ambigua, D.C., between media and aretioides. 



2. Andrewsii, Haw., between umbrosa and Aizoon. 

 Guthrieana, Hort. 



3. capitata, Lap., between aquatica and ajugsefolia. 



4. Churchillii, Huter, between Aizoon and Hostii. 



5. Engleri, Huter and Porta, between crustata and Hostii. 



6. Hausmanni, Kerner, between mutata and aizoides, quite 



intermediate. 



7. Kochii, Hornung, between oppositifolia and biflora. 



8. luteo-purpurea, Lap. (Friderici-Augusti, Hort. not. 



Biasol.), between aretioides and media. 



9. patens, Gaud., between caesia and aizoides. 



10. Porta?, Huter. 



11. Eegelii, Kerner, between mutata and aizoides, nearer 



the latter. 



12. Reyeri, Huter, between tenella and sedoides. 



13. tyrolensis, Kerner, between caesia and squarrosa. 



14. Zimmiteri, Kerner, between Aizoon and cuneifolia. 



