44 



JOURNAL OF THE KOIAL HORTICULTURAL SOCIETY. 



iiatui'all> assiiiue. is in reality iiRvrely a siuipliticaliuii of (lie oia^iiial 

 wild form. The |)liili>s<.>|tliiL'al siyiiiricatiiT of this facd cannoL he deahi 

 with here, hut it is evident ttiat tlio coiise(|ueiK'es of its applieat ion 

 will be far-reaeliiiig indeed. 



The factorial tallies of the snapdragon and the swoel })ea given above 

 will, it is hoped, assist breeders to arrange their nmtiiigs so us to secure 

 the results desired. 



" Albino Orchids. 



Eecent results show that when true albino orchids {i.e. with no 

 trace of purple sap colour) are crossed, the offspring may be all albinos, 

 all coloured reversions, or both albino and coloin-ed forms may be 

 raised from the same capsule."' For instance, Paphiopedilmn calloswni 

 Sanderae, selfed by Mr. N. Cookson, produced true albinos. Another 

 batch, raised by Mr. T. Statter, also produced true albinos (fig. 22). 

 P. Lawrenceanum Hyeanum, selfed by Mr. N. Cookson, produced 

 nine plants, eight of which reproduced the true albino, while one 

 plant is said to have reveii^ed to an ordinary coloured form of P. Law- 

 renceanum. This apparent exception is remarkable, and a repetition 

 of this experiment with larger numbers w^ould be useful (fig. 23). 

 P. Lawrenceanum Hyeanum x P. callosum Sanderae, raised by 

 Messrs. Charles worth in 1900, produced the albino hybrid P. x 

 Maudiae, all the plants of which have so far proved to be true albinos. 

 Another batch raised by Baron Schroder in 1907 also produced true 

 albinos (fig. 24). P. x Maudiae x P. insigne Sanderianmn (fig. 25), 

 raised by Lieut. -Col. Holford in 1908, produced the albino hybrid 

 P. X Rosettii, sixteen plants of which have so far flowered, all appa- 

 rently true albinos. It may be noted here that while P. insigfie 

 Sanderianum so far appears to behave as a true albino, yet the presence 

 of some dark-coloured hairs at the base of the petals suggests that this 

 variety may possibly be a tinged albino like P. insigne Sanderae. It 

 would be interesting to know if the hybrid P. X Rosettii also has those 

 dark-coloured hairs (fig. 26). P. callosum Sanderae x P. bellatulwm 

 album (fig. 27), raised by Mr. Cookson in 1907, produced the coloured 

 hybrid P. x Wottonii, twenty-five plants of which have flowered, all 

 apparently sap-coloured like the typical hybrid between P. callosum 

 and P. hellatulum. P. Lawrenceanum PLyeanum x P. bellatulum 

 album, raised by Mr. Cookson, produced the coloured hybrid P. x 

 Lawrebel, resembling the typical hybrid between P. Lawrenceanum 

 and P. bellatulum. Cattleya Mossiae Wageneri (fig. 20), selfed by 

 Messrs. Charlesworth in 1907, produced a true albino with no trace 

 of sap colour. C. Mossiae Wageneri x C. Gashelliana alba (fig. 21), 

 raised by M. Jules Hye, produced three true albinos — viz. C. x Hyeae, 

 C.xHyeae Suzanne (fig. 28), and C.x Hyeae Jiingfrau. G. Mossiae 

 Wageneri x C. intermedia alba (fig. 30), raised by Colonel Holford 

 in 1906, produced the albino hybrid C. x Mackayi Undine (fig. 29), 



* For details see Gardener^'' Chronicle, 1909, i. p. 81. 



