1919] 



WILSON, THE BONTN ISLANDS 



109 



mens collected in Japan and Liukiu. The Osmanthus is abundant and is 

 often 6 m. high. It seems to be closely related to the Liukiu Osmanthus 

 hradeatus Matsum. The two CalHcarpas are fairly common shrubs in the 

 more open country; in Callicarpa glabra Koidz. the undersurface of the 

 leaves often glistens with lepidote glands. The wide-spread Gardenia au- 

 gusia Merr. (better known as Gardenia florida L.) is one of the most com- 

 mon shrubs and grows quite tall. The Rubiaceous shrubs not already 

 mentioned are connnon undergrowth in forests and shady places. The 

 Viburnum has handsome foliage and flowers but seems to be confined to the 

 Chichi-jima group. The Cacalia is not common and is a bush from 2 to 

 3 m. high, much branched, with gray, corky bark and grows on the mar- 

 gins of woods. Nakai describes another species C, ameristophylla^ but this 

 is probably only a condition of the C. crepidifolia. 



TREES 



Juniperus taxifolia Hook. & Am. 

 Pandanus bonincnsis Warb. 

 Cocos nucifera L. 

 Livistona chinensis R. Br. 



Erythrina indica Lam. 

 Boninia glabra Planch. 

 Zanthoxylum ailanthoides var. inerme 

 Rehd. & Wils. 



Cyphokentia Savoryana Rehd. & Wils. Claoxylum ceiiteiiarium Koidz. 



Putranjiva integerrima Koidz. 



Celtis bonincnsis Koidz. 

 Trema argcntca Bl. 

 Ficus boninsiniac Koidz. 

 Ficus lidaiana Rehd. & Wils, 

 Ficus Nishimurac Koidz. 

 Morus bonincnsis Koidz. 

 Calpidia Nishimurac Rehd. & Wils. 

 Cinnamonium scrobiculatum Nakai 

 Machilus bonincnsis Koidz. 

 Machilus kobu Maxim. 

 Machilus pseudokobu Koidz. 

 Neolitseagilva Koidz. 

 Neolitsea bonincnsis Koidz. 

 Hernandia pcltata Mcisn. 

 Distylium lopidotum Nakai 

 Photinia Maximowiczii Decne. 



Melia Azedarach L. 

 Sapindus mukorossi Gaertn. 

 Elaeocari)us photiniaefolius Hook. & Arn 



Hibiscus tiliaceus L. 



Hibiscus tiliaceus var. glabra Matsum, 



Schima boninonsis Nakai 



Calophyllum Inophyllum L. 



Terminalia catappa L. 



Eugenia oxygona Koidz. 



Fatsia oligocarpella Koidz. 



Ardisia Sieboldii Miq. 



Rapanea Maximowiczii Koidz. 



Sapotacea ? 



Sideroxylon fcrrugineum Hook. & Arn. 



Symplocos bonincnsis Rehd. & Wils. 



Raphiolcpis integerrima Hook. & Arn. Paralstonia clusiacea Baill. 



We now come to the most interesting group, namely, the trees of which 

 there are 41 s])ecies and two varieties belonging to 37 genera and 27 famihes. 

 Of these 26 species and two varieties are endemic. The solitary Gymno- 

 sperm Juniperus taxifolia Hook. & Arn. is one of the most interesting of the 

 Bonin trees and the one my visit was principally concerned with. It grows 

 onMuko-jima, Chichi-jima and Ani-jima and is today most plentiful on the 

 last. In the sheltered gullies growing with Palms and Tree Ferns it is a tree 

 15 meters tall with a trunk 1.3 meters in girth and ascending-spreading 

 branches and long, slender branchlets hanging straight down. Such trees 

 are as ornamental and beautiful as any Juniper can be. On windswept 

 areas it is a low mat-Hke shrub hugging the ground closely, w^ith gnarled 



