550 JOUKNAL OF THE KOYAL HOETICULTUEAL SOCIETY. 



Dorety finds that in M. calocoma there is no resting stage in the develop - 

 of the embryo, and that there are two cotyledons with hypogeal 

 germination. Mucilage ducts alternate with eight to ten cotyledonary 

 strands (endarch at base and exarch in the upper portions). The root 

 is usually tetrarch. — G. F. S.-E. 



Microloma tenuifolium. By N. E. Brown {Bot. Mag. tab. 8248).— 



Nat. ord. Asclepiadaceae ; South Africa. Herb with twining stems ; leaves 

 opposite, 1-2 j inches long, 1-1^ wide ; cymes 3-7-flowered ; corolla, 

 urceolate, crimson, tube I inch long.— G. H. 



Mulberry Scale (Diaspis pentagona). {Le Jard, vol. xxiii. 

 No. 539, p. 232 ; August 5, 1909.)— This formidable parasite 

 which was introduced at Kew some years ago on a consignment of 

 Prunus Pseudo-cerasus from Japan, and stamped out with difficulty, is 

 now attacking the Mulberries in Italy. Since it is a deadly foe to plums, 

 almonds, peaches, and cherries, M. Bouvier has addressed a report to the 

 French Soc. Nat. et Agr. urging them to keep a sharp look-out on all 

 imported plants. No measures can be too drastic to avert this pest, and 

 the infected trees at Kew were all burned when it was discovered. 



F. A. W. 



Mussaenda Treullere. By 0. Stapf {Bot. Mag. tab. 8254).— Nat. 

 ord. Bubiaceae ; tribe Mussaendeae. Tropical Himalaya and Khasia. A 

 shrub ; leaves ovate, acuminate, 6-12 inches, long, 3-6 inches wide. 

 Corymbs, many-flowered ; lobes of corolla f inch across, red orange. 



G. H. 



Mussel Scale. By the Duke of Bedford, K.G., and Spencer U. 

 Pickering, F.R.S. {Wobum, Eighth Beport, 1908, pp. 33-55).— This is a 

 continuation of the investigations described in the " Sixth Report," where 

 an emulsion-soda wash containing 2 per cent, of caustic soda, 6 per cent, 

 of paraffin, and \ per cent, of soft soap (for which latter is now 

 substituted copper or iron sulphate with lime ; see abstract " Emulsions ") 

 removed all moss and lichen and destroyed nearly all the eggs of the 

 mussel scale. These results have now been confirmed, especially where 

 the application — which should not be too early in the dormant season — 

 has been followed by that of a weak emulsion at hatching time (June). 

 The use of a 2 per cent, solution of caustic soda resulted in the destruc- 

 tion of the eggs under favourable conditions only, but this was assured 

 when a stronger solution — 2^ to 3 per cent. — was used, though this is 

 dangerous to the workmen. A 10 per cent, brine caused considerable 

 destruction of eggs, and this was increased by the addition of 2 per cent, 

 of caustic soda. — A. P. 



Narcissus. By Joseph Jacob {Garden, August 14 and 28, 1909, 

 pp. 399 and 423, and coloured plates). — Some of the newer Narcissi are 

 depicted and described, viz. 'Prospero,' 1 Challenger,' 'Masterpiece,' 'Peter 

 Barr,' 'Snow King,' 'Rev. D. R. Williamson,' < Warley Scarlet,' 'Lord 

 Roberts,' ' Czarina,' 'Lady of Shallot,' 'Triandrus hybrid seedling,' 1 Fire 

 Queen,' in the first reference and 'Childe Harold,' 'Oliver Goldsmith,' 



