NOTES AND ABSTRACTS. 



627 



additional note : " The fungus forms cankers on Apple limbs, bearing 

 both conidia and perithecia." — F. J. C. 



Black Rot of Cabbage, Combating' the. By F. C. Stewart and 

 H. A. Harding {U.S.A. Exp. Stn. Neiv York, Bull. 232, 4/1903 ; 2 plates).— 

 This disease, characterised especially by the appearance of black streaks 

 in the woody portion of the stem and in the leaf -stalks, is of bacterial 

 origin, and is caused by Pseudomonas campestris (Pam.) Smith. The 

 disease sometimes causes very considerable loss of Cabbages and Cauli- 

 flowers. It has been suggested that the removal of infected leaves would 

 be an effectual remedy, but the authors find that not only is it unsuccessful, 

 but that this methcd results in a largely augmented loss, in the case in 

 question 49 per cent, of the crop compared with the untreated plot. 



Further experiments along other lines are in progress. — F. J. C. 



Boraginaceae, Anatomy of the Order. By H. Jodin (Ann. Sc. 

 Nat. [Bot.] xvii. pp. 263-346, 28 figs, and 5 plates ; 1903).— A com- 

 parative research on the external and anatomical features of the Borage 

 order, which is of importance to those interested. A chapter is devoted to 

 comparison of the root ; others to stem-organs, leaf, and germination 

 respectively. The five plates and numerous figures in the text, along 

 with the final summary (5 pages), will greatly facilitate reference to the 

 numerous details included in the paper. — W. G. S. 



Borders, Mixed. By Alger Petts (Gard, Mag. No. 2599, p. 561 ; 

 22/8/03). — The preparation and planting of mixed hardy flower-borders 

 is discussed at length. This and similar articles on hardy flower garden- 

 ing would be more valuable if the writers would state the parts of the 

 country from which they write or to which locality their particular advice 

 applies. — W. G. 



Brasso-Cattleya striata. (Bev. Hort. June 16, 1903, p. 276).— 



Speaks highly of this new hybrid, Brassavola fragrans x Cattleya Mossioe, 

 and fairly intermediate in type. Very robust, floriferous, and sweetly 

 scented.— C. T. D. 



Brccmrapeon Coleus. By B. D. Halstead (U.S. A. Exp. Stn. New 

 Jersey, Bep. 1902, pp. 408, 409 ; plate). — Notes the occurrence of 

 Orobanche ramosa Linn, on Coleus. — F. J. C. 



Bryophytes, Researches on. By F. Vaupel (Flora, vol. xcii., 

 1903, pp. 366-370 ; 8 cuts). — Leitgeb showed that in most mosses the 

 whole of the growing point of the male shoot is used up (including the 

 apical cell) in the formation of antheridia. Polytrichum, with its 

 percaulate (" durchwachsen ") male inflorescence, and Mnium appeared 

 exceptional. This relation is explained by the fact that the male inflores- 

 cence is really compound, and that the partial inflorescences are on the 

 Leitgeb type. Mnium, too, has a compound inflorescence ; but here the 

 principal shoot also undergoes the same fate as the lateral ones, and its 

 apex is converted into an antherid. In Catharinea Hauskncchtii the 



