DTE VEGETATION DER ERDE 305 



increase In tlie number of species now known. Thus of the genus 

 Bersama, in vol. i. (1868) of the Flora of' Tropical Africa, only 

 three species are given ; in 1907, when the present writer revised the 

 genus in this Journal, 21 species were known to him; but Dr. v. 

 iirehmer in the work under review gives a clavis of 43 species. The 

 earlier volume (1915) is as to some genera already out of date, 

 numerous important papers, such as l)e Wildeman's revision of 

 Acioa and Alchemilla in liuU. Jard. Bot. Bruxelles, having been 

 issued since its appearance. 



The work is edited by Dr. Engler, who acknowledges valuable 

 help from numerous specialists, amongst whom we note Loesener 

 {Gelastracece, Hippocrateacece), liadlkofer and Gilg {SapindacecB)^ 

 Ulbrich {MalvacecB, Bomhacecd), Harms {Leguminosce, Araliacece), 

 Diels and Gilg {GomhrefacecB), Brehmer (Anacardiacecs, RJiizo- 

 2)horecs, Myrtacece), Schellenberg {Connaracea) ; many of the 

 Orders are provided with useful keys to the genera. The first volume 

 begins with Casuarinacece and ends with the Dicliapetalacece ; the 

 second starts with Euphorhiacece and ends with CornacecB ; both 

 have numerous figures in the text. 



We regret that in the second volume certain papers published in 

 this Journal seem to have escaped notice. As an illustration let us 

 take the Icacinere. Mr. Spencer Moore, in this Journal for Sep- 

 tember 1920, described a new genus of Icacinece — Monocejolia- 

 liiom — which Includes two species, M. Bafesii and M. Zenkeri, 

 both from the Cameroons ; he also has two new species of Stachy- 

 antkus, and points out that the flowers are hexamerous, not penta- 

 merous, as given here in the clavis to the Order. The genus 

 Phaiierocalyx {OlacacecE), described by Mr. Moore in this Journal 

 for 1921 (p. 242), Is also omitted: if these did not appear in 

 time to be included in the text, they should at least have been 

 indicated in an appendix. More attention also should have been 

 paid to the Catalogue of the plants collected by Mr. and Mrs. 

 P. Talbot In South Nigeria, published In 1913. The new genera 

 Alplionseopsis and Deiinettia. (Anonacecd) have been duly noted 

 and Incorporated, but in Myrtacece the rather striking genus Cra- 

 teraiitJms is omitted ; the account of the genus Napoleona in view of 

 Mrs. Talbot's discoveries leaves much to be desired; N'. Talbotii 

 Bak. fil. and N. Egcrtonii Bak. fil., neither of which finds place, 

 seem quite distinct from any previously-known species. In Cola 

 {Sterculiace(s) we find no mention of a striking species ((7. gigas 

 Bak, fil.j collected by Mr. and Mrs. Talbot; the flowers are crimson- 

 purple, 7-8 cm. long, arising two or three together from the stem, 

 and it is evidently one of the most showy species of the genus. 



The account of the LegumiiioscB Is very complete, and it is only 

 in genera such as Craibia and Baphia^ w^hich have recently been 

 monographed, that revision will be necessary ; in the latter genus 

 Mr. Lester-Garland's careful paper in Journ. Linn. Soc. xlv. (1921) 

 should be consulted. In MeliacccG the recent paper by F. C. Ver- 

 mosen in Kev. Zool. Afrlcaine (x. fasc. 1, 1922) will also have 

 to be consulted, especially on Trichilia. Hibiscus, revised by 

 Dr. Hochreutiner in 1900 in Ann. Conserv. Jard. Bot. de Geneve, 



