XXXVL11 PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



Sirex gigas in Timber. — He also showed a specimen of the 

 "Hornet Saw Fly" from Dropmore. It is rather larger, but 

 somewhat closely resembles a hornet in appearance. The grub 

 bores through timber. Mr. McLachlan observed that it was 

 formerly much more abundant, having been introduced from 

 North Europe. 



Niphetos Eose, Malformed. — Dr. Masters also exhibited good 

 examples of a foliaceous calyx in this Rose, the sepals being 

 converted into large pinnate leaves. 



Tyloses in Beech Boot. — Dr. Masters exhibited a microscopic 

 slide showing the cellular growth in the vessels known by this 

 name. To such an extent had it occurred that the wood showed 

 a dark brown streak, indicating the position of the vessels con- 

 taining the tyloses. 



Mignonette, Origin of. — Mr. Henslow suggested, from a com- 

 parison between Beseda odorata and B. Phyteuma, a common 

 species in South France and Algeria, that this latter was the 

 source of the garden plant. In the original description in 

 Bot. Mag., a.d. 1790, it is said to be Egyptian, but the garden 

 Mignonette is not in the Egyptian nor in North African Floras, 

 and does not appear to be known wild. The differences between 

 this and B. Phyteuma, as Mr. Douglas observed, are not greater 

 than between varieties of B. odorata. The wild species, it is 

 true, has not the scent ; still, as Mr. Henslow observed, when a 

 bunch of the flowers are taken, there is just a faint odour 

 suggestive of the Mignonette. 



Caltha palustris, Honey Glands of. — Mr. Cuthbertson called 

 attention last year to the apparent absence of these structures 

 described by M tiller as on the sides of the carpels in his "Fertilisa- 

 tion of Plants," for that author spoke of a " fold " on the sides 

 of the carpels, with a gland in the fold. This has not been seen 

 in any English plant, but there is a spot where the epidermal 

 tissue is papillate, suggestive of an abortive gland. Mr. Cuth- 

 bertson forwarded specimens received from Germany, but still 

 nothing was present in agreement with Miiller's description, but 

 only as occurs here. 



