FLORA OF THE HAWAIIAN ISLANDS. 123 



devoted to the Hawaiian flora. His son has, however, carried out 

 the work in a way which leaves little, if anything, to be desired. 



One special characteristic of the book is the feeling which every 

 page conveys that the author is not working with herbarium speci- 

 mens, but is recording observations which he has made in the field. 

 It is evident at a glance that Dr. Hillebrand knew intimately in a 

 living state most of the material on which his Flora is based ; and 

 this gives an interest to his observations and conclusions which is 

 usually wanting in books of this kind. The author has prefixed 

 to the work the outlines of Botany which Mr. Bentham prepared 

 for our series of Colonial Floras ; and is to some extent responsible 

 for the interesting introduction. 



We regret that space will not permit us to notice the work as fully 

 as we could wish; but on glancing through the pages the following 

 points strike us as noteworthy. Lepidiwn is the only indigenous 

 genus of Cnicifem, and of this there are three species, one (L. 

 arbuscula) new ; the other representatives of the order — Senebiera 



diclyma, Gardamine hirsuta, Xasturtium officinale, and Brassict 



are all introductions. There are ten Pittosporums, five of them 

 new; the exclusively Hawaiian Caryophyllaceous genus Schiedea is 

 increased to seventeen species, five now first described, and an 

 amended description of Mann's endemic and monotypic AUinidendron 

 is given. Of Seemann's Gossypium drynarioides, originally described 

 from a specimen in the British Museum collected by David Nelson, 

 three trees have been found, as well as of two of a variety ; but 

 these are disappearing, if they have not already disappeared. Pelea, 

 a Rutaceous endemic genus, has now twenty species, eight now first 

 described, and Platydesma, also endemic, has its number of species 

 increased from two to four. In Sapindace® a doubtful new genus 

 is described under its native name, Mahoe ; the tree is as yet 

 imperfectly known. Among the not very numerous Lipmmam 

 the novelties are comparatively few, but two of the three indigenous 

 Acacias are new. There are only seven Umbellifem — two of them 

 introduced and two (species of Peucedanum) new. In Andiacea, a new 

 genus, Pterotropia, is established for the plant published by Seemann 

 in this Journal (1868, 130) as Dipanax Manni, with two others, one 

 of them new : Pteratropia had been placed by Horace Mann as a 

 section of Heptaphurum, and it seems likely that Seemann's name 

 will have to stand. 



The endemic Eubiaceous genus Kadua now numbers sixteen 

 species, five of them new. In Lobelia eea, the most characteristic 

 order of the Flora, the novelties are numerous, twenty of the fifty 

 <^ght species being here first described ; five of the six genera- 

 Brighamia $ CUrmonii*, Rollandia, Delissm, and Gyanea— are endemic, 

 as are three out of the five Lobelias : the description of this inte- 

 resting order is elaborated with especial care. Labordea, an endemic 



enume 



jated. I n Cyrtandra many new forms are described— eleven out of 



mfu" eiglit ; tlie polymorphism of the species is said by Dr. 

 ^ulebrand to be extraordinary— no single form extends over the 

 whole group, and not many are common to more than one island. 



