Araliaceae. 
and Kalama in company with a variety of Santalum Freycinetianum (Sandal- 
wood). Owing to the softness of the whitish wood, it is of no commercial value. 
The gum or resin which the tree is capable of producing was used by the natives 
for various purposes. 
The wood was used for making the kukuluaeo, or stilts, employed by the old 
Hawaiians in a game by that name, and it is spoken of as the ‘‘He ohe kahi laau 
hana ia i mea kukuluaeo.’’ 
In Tahiti the name ‘‘Ofe’’ is applied to a tree of the same family to which 
our Reynoldsia belongs. 
PTEROTROPIA Hbd. 
_ (Dipanax Seem. ) 
Calyx border slightly oan and is pins ashi Petals 5 to 9, valvate in the 
bud, isk: cohering or finally spreading. Stam as many as petals, shorter than the 
latter; anthers ovate to a Ovary 2 to 5 sated: stigmas sessile on the top of the 
conical vertex or = on a conspicuous style. rupe somewhat succulent, ovoid or 
sub-globose, with conical apex, Sonnh a ot angular, ringed above, below or at the middle, 
or at the base by phe calycine border and naked above. Pyren ae with a thin endocarp, 
ovoid or slightly compressed, with a broad back and a prominent ridge on either side.— 
Trees with glutinous sap. Leaves alternate, large, impari-pinnate, with 13 to 21 ovoid 
or oblong entire leaflets, with a scattering scaly or stellate pubescence, but gee tecrr 
glabrous. Inflorescence terminal and lateral; flowers umbellate-r acemose on the umbellate 
racemose branches of a = with a short rhachis. Pedicels not aeeeaibink peers 
0 he name Dipanax is not as old as Mann’s section name Pterotropia 
and the latter is iieteters: sean ed.) 
A Hawaiian genus of three species. Tall or medium-sized trees with 
straight trunks and smooth bark. Easily distinguished from all other Hawaiian 
Araliaceae by their leaves, which reach a size of over three feet and have from 
9 to 21 leaflets, and their large inflorescence, which is racemose-umbellate and 
drooping below the leaf-whorls, often two feet and more long; in P. gymnocarpa 
apparently above the leaf-whorls. 
The native name for all three species is Ohe ohe. They are peculiar to the 
dry districts, with the exception of P. gymnocarpa, which occurs in the rain 
forest 
The only distinguishing character between P. Kavaiensis (Mann) Hbd. and 
P. dipyrena (Mann) Hbd. is the number of stigmas. In Hillebrand’s key to the 
Species he also mentions the definite number of leaflets, which, since, more mate- 
rial is at hand, can no longer be relied upon. 
Specimens of P. dipyrena collected by the writer in Kau have 21 leaflets, 
which are truncate, and flowers with 2 to 3 stigmas. The same number of leaflets 
and stigmas occurs in plants from East Maui on the southern slopes of Haleakala 
on the lava fields of Auahi, and also on plants back of Ulupalakua. 
As the number of stigmas varies in that species and differs mainly from the 
Kauai species in the fact that they are sessile, the writer is almost persuaded to 
unite them both under P. dipyrena. : 
The character of the fruit as given in Hillebrand’s Flora regarding the two 
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