NOTES AND ABSTRACTS. 



797 



A curious point may be mentioned by the referee. Of all those con- 

 sidered as established by the author, only Impatiens parviflora, Orni- 

 thopus sativus, Lonicera tatarica, Symphoricarpus racemosus, Solidago 

 canadensis, and Mimulus luteus can be considered as well known and in 

 a sense British plants ; but there are several, not considered as established 

 by Hock, which do occur in our lists. There can be no question as to the 

 value of the paper to British botanists, but it would he more valuable with 

 a map. — G. F. S.-E. 



Flora of Kiautschou and District. By E. Gilg and Th. Loesener 

 (Engl. Bot. Jahrb. xxxiv. Beibl. i. pp. 1-76, March 1904).— A systematic 

 account of plants collected in that portion of China which has recently 

 come under German influence. There is also a classified list of those 

 plants which are of economic value. — A. B. B. 



Flora of Tropical Africa, Contributions to. By A. Engler 

 and others {Engl. Bot. Jahrb. xxxiv. pp. 302-376 ; illustrated ; Aug. 

 1901). — Contains descriptions of novelties in the following orders of 

 flowering plants : — Burseracecs, Violacecs, Tiliacccs, Sterculiacece, Apo- 

 cynacece, Asclepiadacece, Bubiacece, Cucurbitacece, and Euphorbiacece. 



A. B. B. 



Flowers and Insects of Great Britain, Part II. Observations on 

 the natural orders Dipsacece, Plumbaginacece, Composites, Umbelliferce, 

 and Cornacece, made in the Clova Mountains. By J. C. Willis, M.A., and 

 I. H. Burkill, M.A. (Ann. Bot. vol. xvii. No. 66, p. 313).— It is difficult 

 not to imagine a time when flowers and insects shall be commonly studied 

 together as a biologic unity. Their interdependence is now well under- 

 stood, yet much in detail requires still to be observed, and probably in 

 recent years no better work has been done for Britain than that recorded 

 by the present authors. " In Part I. of this series (Ann. Bot. ix. p. 227, 

 1895) we described the results of work in the more southern and lowland 

 districts of Britain ; the present and following papers deal with the 

 flowers and insects of a definite area in the Eastern Grampians of 

 Scotland, and form a contribution to the study of the problem of the 

 composition, distribution, and origin of the flora of that region and its 

 interdependence with those of the insect fauna. Numerous factors have 

 been active in producing the present phenomena of the vegetation of 

 Northern Europe, and among them the floral ecology of the plants con- 

 cerned has doubtless been one of much importance ; its share may best 

 be determined by comparative work upon limited areas in different parts 

 of Europe. Our observations were made during vacations spent at Clova 

 between 1894 and 1899. We selected Clova for our work because it is 

 the focus of the distribution of Alpine plants in Britain, and because of 

 spec'al facilities for our work which the owners of the land there gave us." 

 In this part the insect visitors of thirty-four plants are recorded. " Out 

 of the whole available anthophilous insect fauna of (for the time of our 

 observations) 17,306 individuals, 6,156 went to class B' (Dipsacece, Plum- 

 baginacece, and Composites), and 1,482 to the massed flowers of class A' 

 (Umbelliferce and Comus suecica). The species of plants obtained atten- 

 tion as in Tables IX. and X. ; B' obtained many more of the desirable 



