168 BOTANICAL GAZETTE [FEBRUARY 
gaps. He feels justified in expressing the opinion that nodal anatomy will 
take an important place in the final construction of the phylogeny of angio- 
sperms.—J. M. C. 
Marine algae of Peru.—Howe® has published an account of the marine 
algae of Peru, based chiefly upon collections made by Dr. RoBert E. CoKER 
while acting as fisheries expert to the government of Peru during the years 
1906-1908. The list includes 96 species, 29 of which are described as new. 
Among the latter is a new genus of Rhodophyceae (Lobocalyx), referred to 
Nemalionaceae. The distribution among the great groups is as follows: 
Cyanophyceae 7, Chlorophyceae 20, Phaeophyceae 15, Rhodophyceae 54. 
The importance of the marine algae, recently emphasized by investi- 
gations carried on by the United States Department of Agriculture, is referred 
to in this report. Attention is called to the fact that Macrocystis and the 
other large seaweeds (as Lessonia and Eisenia) are abundant on certain parts 
of the coast of Peru, and that they may prove important as a source of 
“potash.” —J. M. C. 
Liverworts of Peru.—The Yale Peruvian Expedition of rgr1 collected 31 
species of Hepaticae in a condition to be identified, 14 genera being represented. 
= three thallose species, two belong to Marchantiales. According to EVANS,” 
ix species are new: one in Mefzgeria, four in Plagiochila, and one in Lejeunea 
(Deseudeindest. Apparently all of this material is desiccated and therefore 
unfit for critical morphological study. It is unfortunate that even at the 
present day most collectors do not realize the importance of properly preserved 
material. In the naming of some of these new species “honor”’ is conferr 
upon different individuals. It is to be hoped that taxonomists of the future 
will use descriptive names so far as possible when describing new genera and 
species.—W. J. G. Lanp 
Lepidostrobus.—Mrs. ARBER® has published an anatomical study of 
Lepidostrobus, which brings together our previous knowledge of the genus and 
adds some unrecorded features. Perhaps the most noteworthy new feature 
is the presence of a sterile plate in the sporangia of L. Oldhamius and L. folia- 
ceus. This delicate radial plate arises from the floor of the sporangium, an 
dies out toward the distal end. Two new species are described, L. Binneyanus 
and L. gracilis, and also two new forms of L. Oldhamius.—J. M. C. 
*® HowE, MARSHALL AvERY, The marine algae of Peru. Mem. Torr. Bot. Club 
15:1-185. pls. 1-66. 1914. 
17 Evans, ALEXANDER W., Hepaticae. Yale Peruvian Expedition of 1911- 
Trans. Conn. Acad. Sci. 18: 291-345. figs. II. 1914. 
 ARBER, AGNES, An anatomical study of the paleozoic cone genus Lepidostrobus. 
Trans. Linn. Soc. London II. Bot. 8: 205-238. pls. 21-27. 1914. 
