44 TAXONOMY OF VASCULAR PLANTS [Bot. Absts., Vol. VI, 



304. Britton, N. L. Flora of the District of Columbia. [Rev. of: Hitchcock, A. S., 

 and P. C. Standley, with the assistance of the botanists of Washington. Flora of the District 

 of Columbia and vicinity. Contrib. U. S. Nation. Herb. 21: 1-329. 42 pi. 1919.] Torreya 

 19: 244-246. 1919.— See Bot. Absts. 4, Entry 1731. 



305. Cheesem an, T. F. Contributions to a fuller knowledge of the flora of New Zealand, 

 No. 6. Trans, and Proc. New Zealand Inst. 51: 85-92. 1919.— See also Bot. Absts. 6, Entry 

 367. 



306. Chiovenda, L. Plantae e Catanga a CI. Dr. H. Bovone lectae. [Plants from Catanga 

 collected by Dr. H. Bovone.] Nuovo Gior. Bot. Ital. 26: 58-85. 1919. — This paper contains 

 a detailed Latin description of a number of plants and a list of others collected by Dr. H. 

 Bovone at Catanga. — Ernst Artschwager. 



307. Conard, Henry S. The classification of vascular plants: a review. Plant World 

 22: 59-71. 1919. — Certain discrepancies between the standard systematic and morphological 

 texts are discussed, and a classification of the plant kingdom is proposed, which attempts to 

 bring systematic botany into harmony with the most recent morphological discoveries that 

 throw light on the relationships of the larger groups to one another. — Charles A. Shull. 



308. Conard, H. S. The general classification of higher plants. Proc. Iowa Acad. Sci. 

 25: 237-240. 1920. — The author proposes to divide the plant kingdom into Thallophyta and 

 Embryophyta, the latter group into Atracheata (Bryophyta) and Tracheata (Vasculares) , the 

 latter into Lycopsida and Pteropsida, and the last into Aspermae (Filices), Gymnospermae 

 and Angiospermae. — 77. S. Conard. 



309. Coulter, J. M. Flora of the Congo. [Rev. of: Wildeman, E. de. Florae Congo- 

 lensis. Bull. Jard. Bot. Bruxelles 4: 361-429. 1914. Ibid. 5: 1-108. 1915. Ibid. 5: 109-268. 

 1916. Ibid. 6:1-129. 35 pi. 1919. Bot. Gaz. 68: 232. 1919. 



310. Engler, A. Kurzer Bericht fiber in den letzten zehn Jahren von deutschen Botanik- 

 ern unternommenen Forschungsexpeditionen nach Afrika und Papuasien. [Short report on 

 the exploring expeditions in Africa and Papuasia undertaken by German botanists during the 

 last ten years.] Bot. Jahrb. 55 (Beiheft): 5-32. 1919. — A report read at the twelfth meeting 

 of the "Freien Vereinigung der Systematischen Botaniker und Pflanzengeographen zu Wiirz- 

 burg," Aug., 1917. — (7) Botanical exploring expeditions to West Africa, (a) The expedition 

 of C. Ledermann to North Kamerun and Adamaua. This expedition was absent about one 

 year in 1908 and 1909. The number of collections reached 6492, and the geographical data 

 obtained were extensive; the expedition therefore was very important for the region covered, 

 which had been little visited before. In many cases collections made at the same place both 

 in the wet and the dry season gave data not before at hand, (b) Expeditions of Dr. Mild- 

 braed. Three trips were made; the first, from May, 1907, to September, 1908, was through 

 Central Africa and the Congo Basin. The second, from June, 1910, to March, 1912, extended 

 through the primitive forest from the mouth of the Congo to Kimuensa, Stanley Pool, Bolobo, 

 Bongo and Sanaga, to Molundu and to the grasslands of the French border. Mildbraed 

 finally visited the Island of Annobon where a fine collection of Algae was made. The third 

 expedition, leaving October, 1913, was to New Kamerun. Many specimens were sent to Ger- 

 many, and many others were prepared, but failed to reach that country on account of the war. 

 — (77) Explorations in East Africa, (a) Explorations of Hans Meyer in Urundi and Ruanda. 

 This expedition started May, 1911. It furnished little new material, as most of the region had 

 been worked before. A report on this trip has already been made by Meyer, (b) A. Stolz 

 in north Nyassaland, 1900-1912. His collections contain 2760 species and are on the market. 

 He was not primarily a traveller but collected mostly in a few localities, (c) Brehmers' 

 trip in Uluguru, 1913. This expedition was through a rain forest of dense vegetation. The 

 region is described and it is stated that 1038 specimens were collected. — (777) Explorations 

 in Southwest Africa. Trip of A. Engler, March-May, 1913. Accompanied by Dinter and 



