284 BOTANICAL GAZETTE [September 



to be of normal occurrence (contrary to Raatz, but agreeing with the reviewer). 

 They are found to be better developed in spring wood than in summer wood, 

 and more numerous in sap wood than in heart wood. The effect of tyloses on 

 penetration of wood by preservatives is also discussed. — M. A. Chrysler. 



The Congo flora. — Wildeman 10 has published a list of the recorded plants 

 from the state of Congo, which adds much to our knowledge of the African 

 flora. In addition to the vascular plants, the list includes the fungi, of which 

 145 species are enumerated. The new species of fungi number 16, and the 

 following new genera are described: Volutellopsis and Gilletia (Mucedinaceae) . 

 The ferns enumerated are 35, and among them is a new species of Dryopteris. 

 About 130 monocotyledons are enumerated, and 63 of these are grasses. The 

 dicotyledons, of course, are far the most numerous, about 700 species being 

 listed. Among them 25 new species are described, but 15 of these belong to 

 the leguminous genus Geissaspis, an addition that doubles the number of its 

 species. A student in the north temperate regions expects the Compositae to 

 be the dominant dicotyledonous family; but in the Congo region the Legumi- 

 nosae are dominant, being represented in this list by 176 species, while the 

 Compositae reach only 62 species. — J. M. C. 



Embryogeny of Ranunculaceae and Cruciferae. — In continuing his studies 

 of the embryo of Ranunculaceae, Soueges 11 has attacked the genus Ranun- 

 culus, recording every stage in the embryogeny with great detail and excellent 

 illustrations. The same investigator 12 has also made a preliminary announce- 

 ment of additional details observed in the embryogeny of crucifers. — J. M. C. 



South African mosses. — South Africa is beginning to yield its quota of new 

 mosses, as is evidenced by a publication from Wager 13 of the Transvaal Uni- 

 versity College, Pretoria. Ten new species are described, representing ten 

 genera. The author promises an early publication of a list of all the mosses 

 recorded from South Africa.— J. M. C. 



New orchids of the oriental tropics. — As the vegetation of the tropics is 

 investigated more intensively, the number of new species discovered is always 

 surprising. In a recent contribution, Smith 14 has described 26 new species of 

 orchids from the Malay Archipelago, and 40 new species from Papua. — J- M. C. 



"• Wildeman, E. de, Additions & la flore du Congo. Bull. Jard. Bot. Bruxelles 

 4:1-241. 1914. 



" Soueges, R., Recherches sur Tembryogenie des Renonculacees. Bull. Soc. 

 Bot. France 60:506-514, 542-549. figs. 354-4*7- 1913- 



, Nouvelles observations sur Tembryogenie des Cruciferes. Compt 

 Rend. 158:1356. 1914. 



l * Wager, Horace A., Some new South African mosses. Trans. Roy. Soc. South 

 Africa 4:1-6. pis. 1, 2. 1914. 



14 Smith, J. J., Bull. Jard. Bot. Buitenzorg. II. no. 13. pp. 77- I 9 I 4- 



