xlii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



A5, G (3), the pistil being normal. In one flower a style was separated 

 out — producing partial apocarpy." 



S cilia festalis Bulb. — He also reported of the bulb of Bluebell shown 

 at the last meeting : " Instead of the axis of the bulb elongating, the 

 outer scale-leaves have done so to a remarkable extent, and at the top 

 the outermost one or two have become greatly thickened to form a 

 bulb at this level, and this at the expense of the original basal region, 

 which is considerably smaller. Thus, the lateral bulblets, instead of 

 arising in the axils of scale-leaves, must arise adventitiously on the 

 upper surface of the scale-leaves ; there are two or three such in the 

 top bulb ; one of these bulblets is situated about half-way between 

 the two bulbs ; there are also two in the normal position in the basal 

 bulb ; the upper ones are emitting roots through the scale-leaf tissue." 



Seedling Snowdrops. — Mr. H. J. Elwes, F.R.S., showed flowers of 

 seedlings of Galanthus Elwesii of very large size and excellent shape, in 

 some instances having the green mark which typically extends to the 

 base of the inner segments falling short of it. Mr. Elwes considered 

 it far better to raise G. Elwesii annually from seed than to depend upon 

 its persistence year after year. He also showed some hybrid forms 

 of Snowdrop, and said he thought that apparently all the characters of 

 G. Elwesii and probably other bulbous monocotyledons were subject 

 to considerable variation, and it was only by taking the sum of the 

 characters that one species could be distinguished from another. 



Variation in Pinguicula caudala. — Mr. Elwes also showed a beautiful 

 pink flower of a seedling of Pinguicula caudata, and remarked upon 

 the extent of variation in colour in this species from a dark crimson to 

 pink, and upon the readiness with which the shade form had taken 

 to cultivation after its introduction, while the form which he had found 

 under drier conditions had failed. 



Rose Mildew. — Dr. A. S. Home sent specimens of Roses budded on 

 Rosa laxa to show the perithecia of the Rose mildew (Spliaerotheca 

 pannosa) on them. The Roses on other stocks which had been attacked 

 by mildew at Wisley had been searched in vain for the perithecia. A 

 few varieties only, particularly ' Madame Gabriel Luizet ' and ' Mrs. 

 Sharman Crawford,' were badly attacked. Many of the perithecia 

 proved to be immature, but several contained mature spores. He did 

 not wish it to be understood that he subscribed to the opinion that the 

 use of Rosa laxa rendered Roses more susceptible to attack by mildew ; 

 that is possible, but he thought such an expression of opinion would 

 be premature. 



Fungus on White Fly. — He also wrote that he suggested the name 

 Cephalosporium Lefroyi for the fungus to which he referred at the last 

 meeting as attacking white flies on foliage of Centropogon at Wisley, 

 and occurring both on imagos and larvae. He sent the following 

 technical description of the fungus, for which he was indebted to 

 Messrs. A. Gepp, C. E. Jones, and J. Ramsbottom of the Natural 

 History Museum : " Cephalosporium Lefroyi, sp. nov. — Entomogenum 

 albidum ; hyphiis sterilibus, septatis, laxe intertextis vel subinde 



