THE EERX BULLETIN 



113 



station in New York. The only other record of this 

 rare fern in New York State is in the X. Y. State 

 Mus. Rep't 36:36. 1SST; from near Saugerties. LTster 

 County and also four miles southeast of Poughkeepsie 

 where it was found by C. Lown. Specimens of the 

 Saugerties plant are found in the State Herbarium at 

 Albany. 



Geological Hall, Albany, X. V. 



NOTES ON EQUISETUM HYEMALE 



By Chas. C. Plitt. 



/. Spore Shedding. 



When does Equisetum hyemale shed its spores? The 

 following notes upon observations will throw some 

 light upon this subject. They cover a period of three 

 or four years and were made, as opportunity offered, 

 upon plants in various locations. For convenience 

 they have been arranged as if they were all made in 

 the same year. Little inconsistencies arising are due 

 to the inequalities of the season, some seasons are so 

 much ahead of others. 



Mar.. 18. Today found spore cases on the old stalks 

 of Equisetnni hyemale swelling. 



April 17. Found plants of Equisetnni hyemale 

 shedding spores. The weather has been quite pleasant 

 for several clays. 



April 26. Spore cases are swollen and some are 

 shedding spores. It would seem that with the approach 

 of warm weather in spring, growth takes place and the 

 spore cases become several times their size during 

 winter. The white bands on this plant show out beauti- 

 fully today. 



April 20. Spore cases are shedding spores. Tn 



