ADDITIONS TO THE FLORA OF GUAM 



By E. D. Merrill 

 Botanist, Bureau of Science 



In 1914 I published an enumeration of the plants of Guam ' 

 in which about five hundred fifty species are included. Since 

 that paper was published some additional collections have been 

 made in Guam by Mr. Peter Nelson, of the Guam Experiment 

 Station, and in the early part of 1918 a grant of 50 dollars was 

 made to him from the income of the Robinson Memorial Fund 

 of the New York Botanical Garden for the purpose of assisting 

 him in the prosecution of field work in Guam. The arrangements 

 under which this grant was made were that the material collected 

 should be submitted to me for identification; one set to be re- 

 tained for the herbarium of the Bureau of Science; one set to 

 be returned to the Guam Experiment Station ; and the remaining 

 duplicate material to be transmitted to the New York Botanical 

 Garden for distribution by that institution. 



Shortly after the field work was commenced by Mr. Nelson, 

 Guam was visited by an unusually severe typhoon, July 6, 1918, 

 resulting in considerable damage to the equipment of the Ag- 

 ricultural Experiment Station there and in the destruction of 

 the field outfit that had been provided for Mr. Nelson's botanical 

 work, and a considerable amount of prepared botanical material. 

 The field work was consequently delayed as several months 

 elapsed before it was possible to replace the destroyed equip- 

 ment. The collections already made have yielded several spe- 

 cies and representatives of a few genera, new to Guam, as well 

 as at least two undescribed species. These data have been in- 

 corporated in the present paper, together with a few changes 

 in nomenclature. 



SCHIZAEACEAE 



SCHIZAEA Smith 



SCHJZAEA DICHOTOMA (Linn.) Sm. in Mem. Acad. Turin 5 (1793) 

 422, t. 9, /. 9. 



Guam, Nelson 221, on tree trunks at Cotot, associated with 

 Psilotum nudum Griseb. A widely distributed species in the 

 Old World Tropics, the genus new to Guam. 



1 Philip. Joum. Sci. 9 (1914) Bot. 17-155. 



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