Leguminosae. 
dalwood or Adenanthera pavonina, a tree introduced into the islands from 
India. The wood of other species is manufactured into corks. 
The Wiliwili is not peculiar to Hawaii, but is distributed from Hawaii to 
Tahiti and New Caledonia. 
Erythrina indica Lam. is a cosmopolitan species of the South Seas, being 
found in Samoa, New Guinea, Solomon and Marshall Islands, and also has 
found its way even into North Australia. Its vernacular names are Malatum 
of the Tami Islands, Gatae in Samoa, where the natives have even a name for 
the flowers, which they call alo’alo. The bark is used as a remedy for colic, ete. 
RUTACEAE. 
The family Rutaceae belongs to the warmer regions of the globe, and wherever 
they appear form a distinct part, or contribute to the vegetative character of 
that particular region. This is especially true in the Hawaiian Islands, where 
the family is one of the most prominent features of the Hawaiian forest. The 
group of Xanthoxyleae-Evodiinae, to which our Hawaiian Rutaceae belong, finds 
its best development on the islands and on the western coast of the Pacific Ocean. 
The family is represented in the Hawaiian Islands by three genera, one of 
which, Platydesma, is endemic, while Pelea is found in New Caledonia and 
Madagascar. It has in these islands the largest number of species. The whole 
family consists of 111 genera with over 900 species. The group Aurantieae 
possesses the most useful members, namely, the fruit trees, such as oranges, cit- 
rons, ete. 
KEY TO GENERA. 
Leaves compound, alternate; flowers unisexual 
Leaves simple, — osite or whorled. 
MOTI TE UNI PRINT aS a Pee ss wees 
Stamens cbrie petals imbricate 
1 Xanthoxylum 
2 Pelea 
Boe Serres one ee eae ce Oa 3 Platydesma 
XANTHOXYLUM L. 
Flowers polygamous or FP ccncreanin Calyx lobes 1 ue 5, small, more or less unite 
Petals 2 to 10, imbricate or valvat Stamens 3 to hypogynous, pena with the 
i ent 
ou 
but unarmed in the Hawaiian species, with acid aromatic bark alternate equally 
odd pinnate or three- folioate leaves, rarely unifoliolate, dotted with pellucid oil glan i 
Infloresence terminal or axillary, cymose, paniculate, racemose or glomerate. § 
species Xanthorylum Clava-Herculis L. 
The genus Xanthoxylum, or Zanthoxy lum as it may also be written, consists 
of numerous species, which were all except nine placed in the genus Fagara by 
Engler in the Natiirlichen Pflanzenfamilien. The writer, however, adheres 
rather to the old classification, as the distinctions on which Engler based his neW 
192 
TIE NS DS NRE Ee oS 
