i:. C. IIURST. TIIK AI'['LICATln\ (iF TIIK l'IUNCIl'LKS dl- CK.NKTICS. -IK, 



The solution oC Llio preseiil-day proljlein ol rnisiiig a scarlel " cri^imm '". 

 or a scarlet Cattleya would no donbt be murh liasloned by a simple application 

 ol' llio prinriplcsof (ienotics. To l)e sncrosslnl, il \vill no donbt bc nocossary lo 

 li:i\c llir scarlol colour and (lie large si/.c represenled in tlio giiiin-lcs of Imlli 

 /jiircnl.<. In tlie rase of Ihe scarlet " crispuni ", sucli a cross as Odonlimla x 

 Viujlslekeiv {Oihmtnglositinn nobih' X Cochiinda Xoctzliann), matod wilh (hlim- 

 linda X Brndshawiae (0. rrit^pi/iiiXC NoetzHana) should give Ihe desired resnll 

 in abouti ont of 16 plants raised, provided Ihe case is a simple one. In order 

 lo get rid of the piirple tinge, it would be well to use 0. nobilc albinn and (I. 

 crisjiuin xanl/iolf'S for the original grandparents, as Ihese all)inos areknown lo 

 Ijreed Irne when crossed. 



Tho fact ofthe existence of a certain amount of self-sterility in many 

 orchids, makes brecding somewhat more complicated Ihau in olher ])lants. 

 For instance, for several ycars I hâve been atlempting to self certain segrcgales 

 of Ciipripcdiuin X Ili'rii, and so far Ihe only positive resuit obtained lias 

 been I plant raised from C. X Ih'rii punclalniû, and an aiiparenlly good pod of 

 seed now developing on C. x,U. IIkj-xIH. More than iàO selfings bave given 

 no good seeds. 



Priinula. — A homozygous line of Giant Star Primulas with pink tlowors, 

 eut petals, chocolaté eye, fern leaves and red stems, bas been obtained in !■'., ol 

 a cross between P. sincmis and P. slidlala. The original parents were a w hiti' 

 « sinensis » with fern leaves and green stems, crossed with a pink « slellatn « 

 \\ithpalni leaves and red stems. 



Fi were ail light purple, imperfect " sinensis " wilh palm leaves and red 

 stems. Fj segrogated into a medley of forms, with while, tinged while, pink, 

 light purple, purple, " sinensis ", imperfect " sinensis " and " stellala "" llowers, 

 palm and fern leaves, and red and green stems. A pink ' stellata " with palm 

 leaves and red stems was selfed and gave in V- \X pink " stellata " with palm 

 leaves and red stems. !• the same but with eut petals, .") pink " stellata " with 

 fern leavesandred stems, I the same but with eut petals, and I pink stellata 

 with palm leaves, red stems, eut petals, chocolaté eye and fjiaDt /7o/rr/N. This 

 last plant was selfed and gave in F^, ôô plants of pink " stellata " with cul 

 petals, chocolaté eye, ginnl flairers and red stems, of whicli "l'i had palm lea\es 

 and II fern leaves. 



One of the fern leaved plants was selfed and gave in F-, 1 Iti plants of ]iink 

 ■' stellata "" with eut petals, chocolaté eye, ijinnl /foccrs, fern leaves and rc<l 

 stems. Thèse breed true in F,. 



In this way a new form of Giant Star Primula came into existence, and 

 breeds perfectly true in accordance wilh the primiples of Genetics. 



Antirrhinuni. — A number of seleclcd plants of the new shades of C(dour 

 in Snapdragons of intermediate height, known in gardens as Coccineum, 

 Firetly, Daphne, Xobile, Gloriosum, Niobe, Sunsct, Aurora, Black Prince, 

 Dainty Oueen, Buff Queen. Rose Queen, and Maize Queen, hâve been selfed 

 with the objecl of obtaining homozygous lines free from " rognes ", which in 

 the best of stocks are far too common. Cuttings ofthe original plants bave 

 also been taken for comparison of parents and oITspring next year. The inhe- 

 ritance of the pecnliar speckled and striped forms is also being studied. 



