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REVIEWS 



The Codlaceae of the Siboga Expedition, Including a monograph of the 

 Plabellarieae and Udoteae* 



The recent phycological work issued under the above title is 

 one of the extensive series of monographs, now approaching 

 completion, that embody the zoological, botanical, oceanographic, 

 and geological results of the scientific expedition to the Dutch 

 East Indies in 1899-1900 under the leadership of Dr. Max 

 Weber, professor of zoology in the University of Amsterdam. 

 The study of the specimens of the interesting family Codiaceae 

 of the green algae obtained on this expedition was entrusted 

 to Mr. and Mrs. Gepp of the Botanical Department of the 

 British Museum. The numerous comparisons necessary for the 

 proper determination of these East Indian specimens and the 

 unexcelled advantages for a review of the species of the world 

 offered by the collections of the British Museum and the Royal 

 Botanic Gardens at Kew led quite naturally to a general mono- 

 graphic treatment of the principal sections of the family. And 

 as these groups are particularly well represented in tropical and 

 subtropical America the monograph will prove of much interest 

 and importance to American students of the marine algae. 



The general introduction to the monograph includes suggestive 

 "genealogical trees" indicating the authors' views as to the 

 relationships of the genera and of some of the species. The 

 presence or absence of calcification is considered of primary 

 importance and two series are accordingly recognized. The 

 synopsis of genera shows sixteen groups of generic rank, as con- 

 trasted with the eight of*Wille's treatment in the Engler & 

 Prantl Natiirlichen Pflanzenfamilien (1890) and the ten of his 

 recent (19 10) Nachtrage to that work. Flahellaria Lamour. has 

 been revived for a group of two species typified by the chiefly 

 Mediterranean plant commonly known as Udotea Desfontainii. 

 For a group of three species (two newly described) typified by 

 Kiitzing's West Indian Rhipilia tomentosa, Kiitzing's generic 



* A. & E. S. Gepp. The Codiaceae of the Siboga Expedition, including a Mono- 

 graph of the Flabellarieae and Udoteae. 



Siboga-Expeditie, Monographic 62: 1-150. pi. 1-22. F 1911. E. J. Brill, 

 Leiden. 4to. Price, fr. 15.50. 



