ill few iiistanci's the types were not seen ;ind eonseqnently not photographed. 

 Some of the types are in such a niiseral)h' state or so fragmentary that a photo- 

 graph of the same woukl be of no lielp whatsoever. 



Unfortunately Hillebrand neither numbered his specimens nor did lu' des- 

 ignate his tyi)es : consequently his species are all electot\'i)es and as such are 

 here reproduced. Manj- of his new species bear an entirely different name ou the 

 herbarium sheet from that of the one published in his Flora, and his species 

 h<i(l to be rediscovered in his collection to a greater or lesser extent. It was 

 most unfortunate that Hillebrand 's collection was not kept intact, as only a 

 very comprehensive collection of such polymorphic species as occur in the Ha- 

 waiian Islands can give a clear idea of the limits of a species and its relation- 

 ship. As it is, his collection was divided and distributed among many herbaria, to 

 such an extent that the main collection is in many instances (piite fragmentary ; 

 rarely is a species represented in the collection from more than oue island ; 

 Hillebrand records specimens of a species from ditferent localities on one island 

 and often from another island. In nearly every instance only one herbarium 

 sheet is present, while the others can be found at Harvard and elsewhere. 



Shortly before the completion of this monograph, the writer was enabled to 

 examine a collection of plants made .jointly by Hillebrand and Lydgate. The 

 collection was in the possession of ]Mr. Lydgate of Kauai and was sold by him 

 to the IJishoi) JIuseum. The collection brought forth nothing new, but con- 

 tained a specimen of Cijatim Iriloniniitlia p. var. Hillebrand, which was labeled 

 CyaiKa Liidydtei sp. n. This is evidently the only i)lant extant, as tiie writer 

 did not meet with it in auy of the European or American H(>rbaria, nor has it 

 again been re-collected. 



Co-types of the writer's own species have been deposited in the Bishop 

 Jluseum together with duplicate photographs of tyi)es of early authors, as far 

 as available. The monograpli was prepared at the College of Hawaii, partly 

 during College of Hawaii time and partly dui'iiig tiie writer's own time, when 

 he labored during the hours of the night or early morning. The j^hotographs 

 were nearly all taken by the writer; only in few instances were they taken by 

 others and are thus marked on the individual jilate. The actual specimens were 

 all photographed by him. 



The writer wishes to express his sincere thanks and gratitude to the Directors 

 of the various herbaria in which he was privileged to woi-k. especially to Prof. 

 A. Engler, Drs. I. Urban, Diels, Zahll)ruckner. Dr. Le Comte, Drs. Robinson, 

 Fernald, Prof. Ilosmer, Prof. N. L. Britton, Dr. Rowlee and IMonseign. Leveille. 

 To the lion. Albert F. Judd, President of the Trustees of the Berniee P. Bishop 

 Museum, the writer is grateful for the kind interest shown in the present work, 

 as it is to his desire to further scientific knowledge in the Pacific that the pub- 

 lication of this monograph owes its existence. To ]\Ir. Henry Holmes, of the 

 publication committee of the Bishop Museum, the writer is indebted for many 

 valuable suggestions and cooperation in the reading of proof. 



To :Mr. (). II. Swez'^y the writer is grateful for information regarding the 

 insect fauna partial to Lain liuiih ii< . A list of the insects found on Ldhdiii'uhaf. 

 compiled by IMr. Swezey, can be found at tlie end of tlie introduction. 



In conclusion, the writer wishes to remark that while undoulitedlx' new spe- 

 cies of Lobelias will I'ew.-ird the biboi's of I'utni'e cxplorcl's. the old and most 



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