lie 



2oosporangia was strengthened by the fact, that in the vicinity 

 where these plants grew, were found only four other kinds of 

 plants, and the swarm spores of all these plants are known to be 

 different from those found among' the ScnpJiospora plants- 

 These facts are supposed to furnish pretty strong evidence that 

 the organ described as oosporangium is a real oogonium and 

 that the ^oosporangium correspond to antheridia and produce 

 the spermatozoids whose function is the fertilization of the 



egg- 



The third genus, Tilopteris, is only lightly dwelt upon in this 

 article ; its manner of reproduction is said to resemble tliat of 

 Haplospora. The author expresses a wish that some botanist 

 who is able to procure a larger number of plants of the genus 

 Scaphasponiy and who has a more favorable chance to watch 

 their development, may be able to fill up the gaps in the investi- 

 gations just recorded, and in concluding speaks against the sep- 

 aration Into so many genera, saying there seems no good reason 

 why Haplospora and Scapkospora may not be united as one 

 genus with Tilopteris. E. L. G. 



Index to Recent American Botanical Literature. 



Abies bractcata. (Gard. Chron. v. 242, Fig. 44,) 



Abies lasiocarpa. M. T. M. (Gard. Chron. v. 172, 173; illus- 

 trated.) An interesting discussion of the species and the con- 

 fusion in regard to its synonomy. 



Agaricus Rodmani — Note on the Poisonous Pi^operties of the> 

 John Macoun. (Ottawa Naturalist, ii. 142, 143). 



Algcs from Granville, O, — List of Chas. L. Payne. (Bull 

 , Denlson Univ, iv. 132.) A possible new species is described: 

 Spirogyra Herricki. 



Algo-Liehen Hypothesis — The Status of the. Thos. A. Wil- 

 liams. (Am. Nat. xxlii. 1-8.) An interesting resume of 

 the conflicting opinions concerning the systematic position of 

 these plants. 



Aristoloehia Sipho. Mrs. Hoskins. (Vick's Monthly, xii. 72, 

 illustrated.) 



