406 BOTANICAL GAZETTE Inovember 



Zi/p 12 has described a new genus (Pseudodatura) based on Datura arbor ea 

 L. It had also been referred to Brugmansia by Steudel. 



Stapf 13 has published a new genus (Tkellungia) of Gramineae growing in 

 Switzerland. It is related to Sporobolus, and the type is "an alien grown 

 from wool refuse" about a mill. It is possibly of Australian origin, since 

 numerous Australian grasses occur in the "rich alien flora" around the mill. 



Dunn 14 has described a new genus (Smithiella) of Urticaceae from Eastern 

 Himalaya. The genus is dedicated to Miss Matilda Smith, whose drawings 

 and paintings for many years have been published in the Botanical Magazine, 

 I cones Plantar urn , and Kew Bulletin. 



Brown 1 * has presented the results of his study of Mesembryanthemum, 

 describing new species and also wishing "to demonstrate to future monog- 

 raphers the necessity for a thorough revision of the nomenclature of this 

 interesting genus, as in the later monographs of it I have found that there 

 are many errors in identification." Descriptions of 112 species are given, , 

 62 of which are new. Two principal divisions of the genus are recognized, 

 namely stemless species and those with stems, and under these divisions the 

 species are distributed among 31 sections. 



The Bolus Herbarium/ 6 in continuation of its studies of African plants, 

 has published 22 new species in various genera, an extensive list of flowering 

 plants collected in Southwest Af rica by the Percy Sladen Memorial Expedition 

 (1915-1916), 6 new species of Adenandra, and 28 new species of Agathosma, 

 both genera of Rutaceae. 



Ostenfeld, 17 in connection with his studies of the West Australian flora, 

 has published a revision of the following genera: Triglochin (7 spp.)> Crassula 

 (6 spp.), and Frankenia (15 spp.). New species are published in Crassula (1) 

 and Frankenia (3). 



Van Alderwerelt van Rosenburgh, 18 in continuation of his studies of 

 Malayan ferns, has discussed numerous species already credited to the flora, 

 and described 50 new species. There are included also descriptions of 9 new 

 species of Selaginella and a new Lycopodium. 



12 



Zijp, C. Van, Pscitdodatura,nov. gen. Over. Natuur Tyds. Ned. -Indie. 1920. 



24-28. 



15 Stapf, O., Thcllungia, a new genus of Gramineae. Kew Bull. 1920:96-99. 



fig 5 - lr - 



14 Decades Kewenses. Kew Bull. 1920:210-212. figs. 9. 



x * Brown, N. E., Xew and old species of Mesembryanthemum, with critical notes. 

 Jour. Linn. Soc. 45:53-140. pis. 5-10. 1920. 



16 Annals Bolus Herb. 3:1-66. pis. 2. 1920. 



x 7 Ostenfeld, C. H., A revision of the West Australian species of Triglochin, 

 Crassula (T 'ill 'aea), and Frankenia. Dansk Botanisk Arkiv 2:30-55. pi. 4. figs. 19. 1918. 



18 Van: Alderwerelt van Rosenburgh, C. R. W. K., New or interesting Malayan 

 ferns. Bull. Jard. Bot. Buitenzorg 2:129-186. 1920. 



