NOTES AND ABSTRACTS. 



887 



RubllS incisus Thunberg (Gartenflora, Oct. 15, 1904, p. 554). — This is 

 a not very well known Bramble introduced from Japan into Europe in 

 1888. It is an upright growing shrub from 5 to 6 feet in height. The 

 leaves appear on the white stems in spring, and are, when young, of a 

 dark brown colour. The flowers are pure white, the whole making an 

 extremely effective colour scheme. — R. C. R. N. 



Rusts, Investigations Of. By M. A. Carleton (U.S.A. Dep. Agr, 

 Bur. PI. Inch, Bull. No. 63, July 12, 1904 ; 2 plates).— This bulletin 

 consists of contributions to the life-history of species of Uromyces and 

 Puccinia, for the most part connected with tbe United States. Amongst 

 these are the following: Euphorbia rust (Uromyces euphorbia C. & P.), 

 Sunflower rust (Puccinia helianthi Schwz.), which latter is regarded as 

 the true species of Schweinitz and not a form of Puccinia tanaceti as 

 some European authors have contended ; crown rust of Oats (Puccinia 

 rhamni Pers.) and a segregation of host-plants ; rust of Chloris (Puccinia 

 chloridis Diet.) ; the rusts of Willow and Cotton wood (Melampsora) 

 and winter resistance of the Uredo ; emergency adaptations, and investiga- 

 tions on Puccinia. vexans Farlow, with experiments on Lepto-uredinea?, 

 and remarks on perennial species. — M. C. C. 



Salpingaeanthus nobilis. By Spencer Moore (Journ. Bot. 496, 

 pp. 107-8 ; 4/1904). — Description of the only species yet known of a new 

 genus of AcanthacecB collected by Mons. A. Robert at Corumba, Matto 

 Grosso. This remarkable plant has white flowers with a corolla-tube 

 10 centimetres long and a limb 4 centimetres across. — G. S. B. 



Salvia grewiaefolia. By Spencer Moore {Journ. Bot. 496, pp. 109- 

 110 ; 4/1904). — Description of a new species collected by Mons. A. Robert 

 at Sant' Anna da Chapada, Matto Grosso. This species has rather large 

 scarlet flowers, and approaches S. Benthamiana and S. mattogrossensis. 



G. S. B. 



San Jose Scale. By W. E. Britton (U.S.A. Exp. Stn. Conn. Rep. 

 1903, pp. 233-257). — The greater part of Connecticut is infested by this 

 scale, the insect being particularly prevalent on Apple, Pear, and Peach 

 trees. Spraying with the lime, sulphur, and salt wash ; lime and sulphur ; 

 lime, sulphur, and copper sulphate ; lime and potassium sulphide ; white- 

 wash ; strong Bordeaux mixture ; 25 per cent, crude oil in water on dor- 

 mant trees, and kerosene emulsion on trees in foliage was tried. The most 

 generally successful were the lime and sulphur wash, the lime, sulphur, and 

 salt wash, and the lime and potassium sulphide, while the 25 per cent, 

 crude oil in water proved very effective, most of the others washing off too 

 easily. The summer spray of kerosene emulsion did not appear to be 

 very beneficial. — F. J. C. 



San Jose Scale, Experiments on (U.S.A. Dep. Agr. Year Book, 

 1903, p. 73).— Experiments have been made with a lady-bird, imported 

 from China and Japan, which has been found to be an enemy to the San 

 Jose scale. Eight colonies of this beetle were imported during 1902 and 

 distributed for trial. One colony is especially mentioned as having had 

 good results. These were established in an orchard of 17,000 Peach trees 



