SCIENTIFIC COMMITTEE, MARCH 3. 



XXV11 



5. P. callosum Sanderae (P) x P. insigne Sanderae (C) gives coloured hybrids (C P). 



6. P. callosum Sanderae (P) x P. bellatulum album (C) gives coloured hybrids (C P). 



7. P. bellatulum album (C) x P. Lawrenceanum Hyeanum (P) gives coloured hybrids 

 (C P). 



The next table gives the remaining possible matings between the 

 albinos concerned, together with the expected results : — 



Table B. 



1. P. bellatulum album (C) x P. bellatulum album (C) should give albinos (C C). 



2. P. bcllatidum album (C) x P. insigne Sanderae (C) should give albinos (C C). 



3. P. insigne Sanderae (C) x P. Lawrenceanum Hyeanum (P) should give coloured 

 hybrids (C P). 



Future results will show how far the above conception, based on 

 Mendel's law, is correct. If Mr. Chapman thinks well to self the 

 coloured hybrids that he obtained from two albinos, he may expect to get, 

 on the average, nine coloured forms to seven albinos (see pp. xxix and xxx). 



Bigeneric Hybrid Orchid. — Mr. Rolfe, A.L.S., drew attention to the 

 bigeneric orchid Epi-diacrium Colmanii shown by Sir Jeremiah Colman, 

 Bart., and raised between Diacrium bicornutum $ and Epidendrum 

 ciliare $ , and remarked that this new and interesting hybrid approached 

 closely in habit, inflorescence, and form of flower to the pollen parent. 

 He also commented upon the question of the nomenclature of bi- and 

 poly-generic hybrids, saying that he considered it best to compound the 

 name of the hybrid from the names of the parent species, and to avoid 

 conventional names unless they were so formed, as long as it is possible 

 to do so. 



Green-flowered Primula sinensis. — Mr. Sutton, V.M.H., showed a plant 

 of Chinese primula with green flowers, the appearance being due apparently 

 to chlorosis of the corolla. The seed had been sown in 1904 and onwards, 

 and had each year bred true until this plant had appeared among the 

 seedlings raised last year. Only once before had Mr. Sutton seen a 

 similar thing, and that was in 1902, when the same kind of sport occurred 

 in another stock of double white P. sinensis, but in that case the flowers 

 were not so well developed. The pollen appears perfect, and possibly seeds 

 may be obtained from the plant. 



Colour Sports in Boronia and Erica. — Mr. Veitch, V.M.H., showed 

 a plant of the albino form of Boronia megastigma, a portion of one 

 branch of which bore flowers of the normal colour, purplish-brown, thus 

 reverting to the type from which the sport arose. From Mr. Earp, of 

 Bayham Abbey, came a spike of an Erica (sp. ?) which last year had 

 borne white flowers only, but every flower this year was of a pinkish 

 colour. Some members of the Committee thought that possibly the 

 flowers in the previous year had been caused to open in the dark. 



Crocus with Parts in Fives. — From Mr. Elwes, F.R.S., came a crocus 

 flower having ten perianth segments in two whorls, five stamens alternate 

 with the outer perianth pieces, but a six-branched style. 



Curious Mushroom. — Mr. Harris, of Denne Park, Horsham, sent a 

 mushroom having a second complete but inverted mushroom attached to the 

 pileus. The two had evidently become grafted together through contact 

 in the early stages of growth, and the one had carried the other up as 



