770 MINNESOTA BOTANICAL STUDIES. 



the island of Oahu is perhaps as good collecting ground as 

 Kauai. 



There is no doubt but that Hillebrand's sum total of 999 

 species of flowering plants and ferns is entirely too small. My 

 own explorations covered only a small part of the lee side of 

 Oahu and less than half of the lee side of Kauai, yet these lim- 

 ited areas have yielded 500 species, in round numbers. Taking, 

 into consideration that the native flora of any given island of 

 the group is different practically from that of the other islands, 

 it is safe to say that careful study of the flora in the field, will 

 increase the sum total to at least 2,000 species. 



In describing the new species, I have taken a certain number 

 as the type, and described only the specimen under that num- 

 ber. When a slightly different form, but undoubtedly the same 

 species was collected, I have not made my description of the 

 type to include that also, but refer it to the same species, and 

 point out in what particulars it differs from the type. Much 

 mischief has been dene by mixed descriptions including several 

 forms, but it is to be hoped that such a faulty practice will be 

 discarded by every botanist. 



I wish to express my thanks to Professor VVm. T. Brigham, 

 Curator of the Bernice Pauahi Bishop Museum at Honolulu, for 

 many kindnesses which made pleasant my stay in Honolulu, 

 and also for the privilege of consulting the Mann & Brigham 

 collection, preserved in the Museum. Here I was able to ver- 

 ify many of my specimens, and received much aid in determin- 

 ing others. To Mr. Francis Gay, of Makaweli, Kauai, I am 

 much indebted for the privilege of occupying the Gay & Rob- 

 inson house in Hanapepe valley, and the Kaholuamano house 

 on the plateau, above Waimea. 



The^drawings[for the plates were made by my wife, Mrs. E. 

 Gertrude Heller, who has greatly aided in the preparation of 

 this paper. 



