June, UJ14.J 



THE ORCllll) WORLD. 



201 



either phiiu or yellow-spotted hybrids ; there 

 IS no evidence of the yellow pigment 

 becoming transfused over the greater part of 

 the flower, as is the case with the purple 

 ardentissimums. The repeated intercrossing" 

 of selected xanthic varieties will accentuate 

 the formation of the yellow matter, and b)- 

 this means a gradual improvement may be 

 expected. 



So far, we have only dealt with adventitious 

 spotting. We may now consider the species 

 which are invariably blotched and spotted. 

 Of these there are several which have 

 produced albino forms. The term albino is 

 here applied to varieties which ha\ e lost their 

 purple pigment, the blotching and spotting 

 ^tiU being visible, but of varying yellow and 

 golden tints. These varieties include 

 tnumphans aureum, gloriosum citratum, 

 Lindleyanum aureum, Sceptrum aureum, 

 luteopurpureum Vuylstekeanum, grande 

 Pittianum, cordatum aureum, Insleayi aureum, 

 Uro-Skinneri album and bictoniense album. 



Odontoglossum Jorisianum (triumphans 

 and luteopurpureum) was originally exhibited 

 by Messrs. Linden, of Brussels, April, igo/. 

 In this issue Mr. F. Menteith Ogilvie fully 

 describes the interesting aureum variety, 

 which he has produced by means of the 

 aureum forms of both parents. This albino 

 result came as a great surprise, for whenever 

 luteopurpureumVuylstekeanum has previously 

 been used with other albinos reversion to the 

 normal coloured type has not only taken 

 place in every case, but in many of the 

 eedlings the colour has been considerably 

 larker than in those hybrids produced by 

 ordinary forms of the parents. Jorisianum 

 aureum is the first hybrid in which the albino 

 form of luteopurpureum has found a suitable 

 ])artner. 



In September, iQorj, Mr. H. T. Pitt fl<nvercd 

 Od. stamfordiense (bictoniens(" x Uro- 

 .Skinneri), both parents being albino varieties, 

 while the resulting seedling was intermediate 

 in form and remained in the albino condition. 



During the year 1913 Messrs. Charlcsworth 

 flowered several hybrids between Uro- 

 .Skinneri album and armainvillierense 

 xanthotes. These all showed varying 



reversion to the normal type of colour, not 

 a single albino variety was produced. An 

 interesting occurrence, however, was the way 

 m which some exhibited a semi-albino 

 condition in the sepals and petals, while, at 

 the same time, the labellum was fully 

 coloured. This h\-brid has been recorded .as 

 O. Elfrida. 



Lindleyanum aureum and gloriosum 

 citratum when mated with xanthotic crispums 

 may produce albino forms of Coradinei and 

 Andersonianum, but apart from this point of 

 interest they will be of little use in breeding 

 large flowers. Insleayi aureum and grande 

 Pittianum might intercross, although they will 

 bring nothing in the way of an improvement 

 on either. So far as present experience goes 

 there appears little chance of Insleayi and 

 grande being crossed with their Colombian 

 relations. 



ODONTOGLOSSUM BELLAMINA. 



crispum tripudians nobile cri,s|>uin 



bc'llatuliini armainvillierense 



I J 



BELLAMINA. 



I made this cross with the object of fi.xing 

 'the blue in tripudians, which is developed 

 strongly in the hp of that species (or hybrid 

 as I strongly suspect it is). Choosing a bluish 

 shade in the ^ parent has effected a certain 

 amount of what was attempted, but the first 

 plant to bloom seldom gives the ideal desired. 



The whole flower conforms to the 5 

 parent, the blotching of the segments being 

 similar in arrangement with a white margin 

 all round both sepals and petals. The lip has 

 good characters, being intermediate in form, 

 and three-quarters covered by a bluish lilac 

 brown overlay. 



When looked through towards the light the 

 whole of the blotching assumes a bluish-lilac 

 hue. Perhaps another variety will go a step 

 nearer " 1 he Blues." 



de B. Crawshay, Roscfield, May 7///, rgi / 



VOL. IV. 



27 



