NOTES AND ABSTRACTS. 



in 



Porquerolles, Flora of. By H. S. Thompson {Jour. Bot. 528, 

 pp. 407-410; 12/1906).— A description of the interesting florula of a 

 small island off Hyeres. — G. S. B. 



Potentilla concolor. By R. A. Bo\ie.(Bot. Mag. tab. 8180).— Nat. 

 ord. Bosaceae, tribe Potmtilleae, China. Perennial herb, over 1 foot 

 high ; upper leaves trifoliate ; flowers H inches diameter ; petals deep 

 yellow. — G. H. 



Prunus Fordiana and P. marginata. By S. T. Dunn (Jour. 

 Bot. 540, pp. 402-403; 11/1907).— Descriptions of two allied species 

 from Kwantung, near to P. punctata.— G. S. B. 



Pseudolarix Fortunei. By W. B. Hemsley (Bot. Mag. tab. 8176).— 

 Nat. ord. Conifcrae, tribe Abietineae. China. Tree resembling larch, 

 120-130 feet high ; leaves deciduous ; female catkins globose ; cone 

 ovoid-oblong, 1J-2 inches long. — : G. H. 



Pyrus Apia, Far. majestica. By W. J. Bean (Bot. Mag. tab. 8184), 

 — Nat. ord. Bosaceae, tribe Pomeae. Garden origin? Tree 40 feet 

 high ; leaves 3-7 inches long ; flowers in corymbs, 3-4 inches across ; 

 petals dull creamy-white. Fruit in loose corymbs, globose, \ inch diameter, 

 bright red. — G. H. 



PyPUS Tschonoskii. By 0. Stapf (Bot. Mag. tab. 8179).— Nat. ord. 

 Bosaceae, tribe Pomeae. Japan. Tree 30-40 feet high ; trunk 1 foot 

 diameter ; racemes umbellate ; flowers upwards of 1 inch diameter, white, 



G.H. 



Raspberry Pest (Agrilus chrysoderes var. ruhicola Ab.). By 

 J. Vercier (Le Jard. vol. xxii. No. 502, p. 28 ; January 20, 1908 ; 

 1 fig.). — The raspberry crop in America has long been devastated by 

 Agrilus ruficollis Fab., and A. chrysoderes has now made its appearance 

 as a pest of the crop in Cote d'Or, whence come the best raspberries of 

 France. It is a minute bronze beetle found on the leaves during the 

 summer which deposits its ova on the twigs in July. The larvae burrow 

 under the bark, making spiral galleries which intercept the flow of the 

 sap, and the shoot withers from desiccation, or snaps when pruned or 

 exposed to gusts of wind. The larvae remain in the bark throughout the 

 autumn and winter, penetrating farther in May, and emerging in June as 

 a beetle. The pests are subject to the attacks of Hymenopterous parasites. 

 The best cure for the Agrilus scourge is to burn all doubtful or infected 

 wood after the autumn pruning and again early in May, before the insects, 

 come out. — F. A. W. 



Rehmanriia angfulata. By W. B. Hemsley (Bot. Mag. tab. S177n 

 — Nat. ord. Scrophidariaccae, tribe Digitalieae. China. Biennial or 

 perennial ; stems 4-6 feet long ; leaves ovate-oblong ; corolla 3-4 inches 

 long, pink with a yellow throat. — G. H. 



Rheum inopinatum. By D. Prain (Bot. Mag. t. 8190).— Nat. ord. 

 Polygonaceae, tribe Bumiceae. Tibet. Perennial herb ; leaves sub- 



