NOTES AND ABSTRACTS. 



835 



(AspidioUis perniciosus Comst.). It was first noticed near San Jose, 

 California, and described by Prof. J. H. Gomstock in 1880. Its original 

 home is probably China. It attacks not only fruit but forest and shade 

 trees and many ornamental shrubs. 



Usually the insect appears upon the bark as a grey rough coating, 

 hardly visible to the naked eye. Gradually, as the trees become more 

 infested, the bark may be completely covered with several layers of 

 scales. In bad cases both the leaves and fruit are attacked. 



Several species of ladybird feed on the scale insect, but are not 

 found to be a very important check. The best methods of control are 

 spraying the trees while dormant with lime and sulphur mixture, or 

 with one of the soluble oils diluted at the rate of one part to fifteen 

 parts of water, and fumigating nursery stock with hydrocyanic acid 

 gas.— F. G. J. 



Saxifragra Fortunei (Die Gart., August 6, 1910, p. 398; fig.).— 

 The last in flower of the Saxifrages. It is usually at its best during 

 the latter part of October. The flowers are white, spotted with rose, 

 and are produced in panicles. The leaves are heart-shaped, succulent, 

 hairy. — G. R. 



Saxifrag-a Grisebachii {Bnt. Mag. tab. 8308).— Nat. ord. Saa-i- 

 fragaceae ; tribe Saxifrageae. South-East Europe. Herb, with rosu- 

 late leaves 3-10 inches long, with paler borders and intra-marginal 

 pits; stems erect, 4-6 inches high, with spreading leaves, reddish with 

 an abruptly narrowed green tip ; inflorescence racemose ; calyx reddish- 

 purple, hairy; petals purple. — G. H. 



Saxifrag-es, SummeP-flOWeringr. By E. H. Jenkins {Garden, 

 July 2, 1910, p. 325).— The value of these lies in their succession of 

 flowering, and they embrace the most diminutive and the boldest of 

 these plants; the latter are well planted in a fissure or crevice of the 

 rock garden. 



S. Cotyledon and its variety S. C. pyramidalis are the best known, 

 and produce snowy plumes 20 to 24 inches high, but finer still is 

 S. C. icelandica, reaching 3 or 3| feet and conspicuous in the rock 

 garden in late June or July. Then we have aS*. Hostii and S. Mac- 

 nahiana, which only need cultivation to develop their rosettes. S. 

 longifolia often blooms and dies, offsets rarely appearing. S. coch- 

 ' learis has erect full-flowered snowy plumes about a foot high, lasting 

 long in good condition. In S. lantoscana and S. I. superha we have 

 two long-leaved silvers. ^S*. Aizoon is a group with many beautiful 

 varieties, specially halcana, rosea, and ftavescens. The crimson-spotted 

 whjte Saxifrage ' Dr. Eamsey ' is a gem ; it is a miniature S. longifolia. 

 In the July list is S. catalanica, from Northern Spain, beautiful if only 

 ^ for the silver braiding of its leaves. It is perfectly hardy, but slow 

 " growing, the flowers creamy, carried on a short spike, and the buds and 

 stems pink, and is valuable in dry places for its conspicuous winter 

 beauty. Other good representatives of the diminutive gem " class are 



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