clxii PROCEEDINGS OF THE ROYAL HORTICULTURAL SOCIETY. 



yellow spots or being wholly yellow. A variety of causes may bring 

 about this condition, such as lack of iron, lime, or potash in the soil, 

 and at times insufficient drainage, combined with lack of sun, &c, may 

 produce similar results. 



Scientific Committee, August 6, 1907. 



Mr. E. A. Bowles, M.A., F.L.S., in the Chair, with six members present, 

 and Mr. C. E. Gkosvenor, of Berkeley, California, U.S.A., visitor. 



Chlorosis in Fruit Trees. — Mr. Spencer Pickering, F.R.S., wrote as 

 follows regarding this subject, which was before the Committee at their 

 last meeting : — " In one district where the trouble is very prevalent the 

 soil contains as much as 10 per cent, of lime. Deficiency of lime, 

 therefore, cannot be the cause of the disease." 



" Yellow Stripe " m Narcisstis. — Some bulbs of 1 Sir Watkin.' 

 Narcissus were received, the foliage and flowers having been affected 

 with the well-known " yellow stripe." The cause of this disease is still 

 obscure, but it appears to follow from too heavily manuring the soil 

 in which the plants are grown. Mr. Bennett-Poe, V.M.H., and Mr. 

 Douglas, V.M.H., stated that if the plants were cultivated in soil not 

 manured for a time they would recover, but only after a considerable 

 period, and the attempt to cure the plants was hardly worth while with 

 the cheaper varieties. 



Curious Growth on Broom. — Mr. Holmes, F.L.S., showed a branch 

 of Broom which had been drooping downwards, and had sent out from 

 its tip numerous thin shoots much crowded together and growing almost 

 erect. The parent branch had become thickened just at the point at which 

 the branches had been produced. 



Crinum augustum. — A splendid inflorescence with foliage of this 

 Crinum was shown by Sir Trevor Lawrence, Bart. The plant is figured 

 in Bot. Mag. 1823, tab. 2397. 



Plymouth Straiuberry. — Mr. Chittenden showed, on behalf of Mr. 

 R. Lindsay, a specimen of the 1 Plymouth Strawberry ' from the gardens 

 of Mr. Eraser, Comely Bank Nurseries, Edinburgh. This curious 

 Strawberry, in which the carpels are replaced by small leafy growths, 

 was first described by Tradescant, and is referred to in Johnson's 

 edition of (ierarde's "Herbal"; it was figured by John Parkinson. 

 Dr. Masters refers to it in " Vegetable Teratology " as " a kind of 

 Botanical Dodo," as it was not heard of for about a century, but was 

 afterwards discovered again at Bitton, in Canon Ellacombe's garden, 

 and by Mr. (i. P. Wilson at Wisley. 



Peloric Antirrhinum. — Mr. Chittenden showed, also from Mr. 

 Lindsay, a specimen of Antirrhinum with regular flowers, the peloric 

 condition being complete in all the lower flowers of the spike, while 

 some of the upper ilowers were returning to the irregular condition. 

 The peloric condition has now become fixed, but the form cannot be 

 depended upon to come true from seed. 



