234 JOUKNAL OF THE EOYAL HORTICULTURAL SOCIETY. 



Phenological Observations made at Coimbra in 1900. By 



A. F. Moller {Bol. Soc. Brot. xvii. p. 196, 1901).— These observations 

 should prove of interest for comparative purposes. The headings are 

 "First Leaves," " First Flowers," "First Ripe Fruit," "First Yellowing 

 of Leaves."— (7. M. 



Phlox *Comtesse de Jarnac' By J. Rudolph {Rev. Hort.]).^0 \ 

 January 1901). — A variegated form of Phlox decussata ; leaves broadly 

 margined with white, green centre, sometimes all white ; flowers rosy- 

 pink, but inferior ; recommended for bedding ; hardy and perennial ; stands 

 hot sun ; indifferent to soil ; prefers exposed positions. — C. T. D. 



Phoenix Roebelenii, O'Brien. With photograph {Rev. Hort. Beige, 

 June 1901). — A pinnate-leaved dwarf palm of much elegance. Its 

 native country does not appear to be known, but possibly Indo-China. 

 The method of cultivation is given. — G. H. 



Phylloxera. Anon {Neiv Zealand Dept. of Agricult., 8th Report, 

 p. 305 ; two figs. ; 1900). — Vines on 100 properties in the Provinces of 

 Wellington and Auckland are reported as infested with this pest. In 

 some cases where the Vines were past recovery they were destroyed ; 

 when not so severely attacked they were treated with carbon bisulphide, 

 the whole expense being borne by the Department. Photographs of the 

 first winged forms of the insect found in New Zealand are given. — R. N. 



Placea, the Genus. By Wilhelm Miller, of Ithaca, N.Y. [Amcr. 

 Gard. xxii. 326, pp. 210-212, fig. 48 ; 23/3/1901).— A discussion on the 

 relationship of this South American genus to Hippeastrum and Narcissus. 



C. C. H. 



Plane, OfFensiveness of. "Anon" {Bull. d. R. Soc. Tosc. Oft. 2, 

 p. 53, February 1901). — People living near Plane-trees, those engaged in 

 pruning them, and boys who play with the freshly-severed branches, have 

 suffered considerable inconvenience from irritation in nose, eyes, and 

 throat caused by a dust which is formed by the stellate hairs of the lower 

 surface of the leaves. But the annoyance, which prevails during the 

 vegetative period of the tree, is also due to a parasite, a mite, 

 Tetmnychus telarius var. russeolus, Koch, which is capable of 

 living on man as well as on plants. This insect, during winter, is con- 

 cealed beneath the bark of the trunk and branches, but as soon as the 

 buds be^in to burst, emigrates into the leaves, where it lives for seven 

 months. In Paris the mites of the Plane-tree only remain about three or 

 four months in the leaves before returning to the stems, as the former 

 soon become coriaceous ; and also never attack man, but are confined to a 

 vegetable diet.— TF. C. W. 



Plantse Lehmannianae praesertim in Columbia et Ecuador 

 collectae additis quibusdam ab aliis collectoribus ex iisdem 

 regionibus allatis determinatae et descriptae. Compositae II. 



By G. Hieronymus {Engl. Bot. Jahrb. xxviii. pp. 558-659^; 



