178 MORPHOLOGY AND TAXONOMY, ALGAE [BoT. Absts., Vol. VIII, 



1234. Howe, Marshall A. Algae, in Britton's "Flora of Bermuda," p. 489-540. 1918.— 

 See Bot. Absts. 8, Entry 687. 



1235. HoYT, W. D. Marine algae of Beaufort, N. C, and adjacent regions. Bull. U. S. 

 Bur. Fisheries 36:367-556. PI. 84-119, 47 fig. 1920.— Following a general account of the 

 region, the local distribution, the ecological factors, the seasonal distribution, and methods 

 of collecting and preserving algae are discussed. Most of the bulletin is given over to a 

 systematic account of the 133 species and varieties found. Of these, 10 are Myxophyceae, 

 25 Chlorophyceae, 27 Phaeophyceae, and 71 Rhodophyceae. Descriptions, critical notes, 

 and keys are given for all the species included. The plates are largely photographs. New 

 species described are hitophylluin medium and Streblonema invisibile. — E. N . Transeau. 



1236. Lemoine, Mme. Paul [Lemoine, Marie]. Botanische Ergebnisse der Schwedis- 

 chen Expedition nach Patagonien und dem Feuerlande 1907-1909. VII. Les Melobesiees. 

 [Botanical results of the Swedish expedition to Patagonia and Tierra del Fuego 1907-1909. VII. 

 The Melobesiaceae.] K. Svenska Vetenskapsakad. Handl. 61*: 1-17. PI. 1. 1920.— The 

 author discusses and describes specimens collected by Dr. Carl Skottsberg. Five species 

 are attributed to the island of Chiloe, 1 to the island of Huafo, 2 to Juan Fernandez, 6 to 

 Tierra del Fuego, 1 to the island of Atalaya, and 6 to the Falkland Islands. Six species, 

 Lithothamnium paucisporuyn, L. Caroli, L. (?) Skottsbergii, Lithophyllum (?) almanense, 

 L. fernandezianum. and L. atalayense, are described as new. — Marshall A. Howe. 



1237. Lewis, Ivey F., and Conway Zirkle. Cytology and systematic position of Por- 

 phyridium cruentum Naegeli. Amer. Jour. Bot. 7:333-340. 2 pi. 1920. — The authors give 

 an account of the somewhat tangled taxonomic history of this species, and discuss briefly 

 the conflicting descriptions of it which have been presented by various writers. From the 

 results of their own observations, the authors suggest that previous workers may have studied 

 different growth states of the same species rather than different species. The cells are sur- 

 rounded by jelly and are usually borne on gelatinous stalks. The chromatophore is star- 

 shaped in resting cells, amoeboid in growing ones. The pyrenoid is distinct, easily stainable 

 and centrally located, and is generally spheroidal. In the resting stage there is a single 

 eccentric globule of chromatin homologous to a nucleus or nucleolus. Nuclear division is 

 crudely mitotic. The authors suggest that for the present Porphyridium should be kept in 

 the Bangiaceae.- — E. W. Sinnott. 



1238. LiNDEMANN, E. Untersuchungcn iiber Siisswasserperidineen und ihre Variations- 

 formen II. [Investigations of fresh-water Peridineae and their variations.] Arch. Naturgesch, 

 Abt.A84: 121-194. Fig. 1-200. 1918 [1920].— A continuation of work reported under the 

 same title (Arch. Protistenk. 39: 209-262. PL 17, fig. 1-144- 1919). The author discusses 

 the grouping of the Peridineae and describes his method of distinguishing and designating 

 forms, subvarieties, subspecies, and varieties. Descriptions are given of 17 forms, 3 sub- 

 varieties, 31 varieties, and 14 .species. He also discusses the distribution of members of the 

 group with reference to season and composition of the water, and their association with 

 other plankton constituents. Additional notes are given of stations for 27 species, 3 varie- 

 ties, and 3 forms. — C. E. Allen. 



1239. Lucas, A. H. S. Algae of Commonwealth Bay. Australasian Antarctic Expedition, 

 1911-14, Sci. Rept. Ser. C. T^: 18 p., 9 pi. 1919. — -An account of the algae of the antarctic 

 region with description of two new species: Chaetomorpha Mawsoni and Iridaea Mawsoni. 

 Victoria Land and Commonwealth Bay are each credited with 14 species of which 8 are 

 common. — E. N. Transeau. 



1240. Lyle, Lilian. The marine algae of Guernsey. Jour. Botany 58: Suppl. 2. 1-53. 

 1920. — The present list and notes, both ecological and taxonomic, were based on collections 

 and field studies made in 1911, 1912, and 1914. In all, 250 species and 78 varieties and forms 

 are listed from the island. Chantransia Lorrain-Smithiae Lyle and Gelidium latifolium Born. 



