Apocynaceae. 
It inhabits the dry regions on the leeward sides of all the islands at an ele- 
vation of about 2000 feet. On Lanai, in the valleys of Kaiholena and Mahana, 
it develops a straight trunk; the branches are somewhat stiff and densely. 
studded with leaf-sears. It associates with Reynoldsia sandwicensis, Pitto- 
sporum, Antidesma, and other trees peculiar to the dry regions. On Oahu it is 
more or less shrubby, sepecially so in Niu Valley and on Tantalus, while on 
Kauai big trees may be found above Makaweli. 
The wood of the Hao is of medium strength, fairly close grained, and dark 
yellowish in color. It is never used for firewood, as the natives claim that the 
smoke is poisonous. As it burns to ashes and leaves no chareoal, it was never 
employed by the natives for the production of the latter. It is called the Ha- 
watian Ironwood on account of its durability. 
OCHROSIA Juss. 
Calyx small, deeply 5-cleft, with imbricate obtuse lobes, gland] Corolla salver- 
shaped, with eylindrical tube which is dilated at the point of the nkertion of the stamens, 
and is constricted at the glabrous throat lobe es dextrorse. Stamens oblong lanceolate, 
with acute anthers. Discus wanting, or very indisti net, short, annular. Ovary superior 
b : j ed in two rows. 
ase. Drupes in pairs or through abortion single, divaaecs ry, united a 
mea 
Trees with whorled coriaceous leaves, which are niche ams veined; flowers 
= size wa often very fragrant, arranged in cymes from the axils of the upper- 
The genus Ochrosia supposedly consists of 13 to 15 species, and extends from 
the Mascarene Islands, through Malaysia and tropical Australia into Polynesia. 
Only one species, Ochrosia parviflora (Forst.) Hemsl., is widely distributed over 
the Pacifie Islands. Ochrosia sandwicensis, one of the Hawaiian species, to- 
gether with the New Caledonian Ochrosia elliptica, comes very near to Ochrosia 
oppositifolia (O. borbonica) and may only be a variety of the latter. 
Ochrosia sandwicensis Gray. 
Hole. 
(Plates 167, 168, 169.) 
OCHROSIA SANDWICENSIS — (not DC.) Proe. Am. Aca 
Proe, : 1867) 197;--Wawra in Flora GsT4) 366; —Hba. aide 
Isl. (1888) 296;—Del Cast. Mil, Fl, Ins, Mar. Pae, VII. (189 2) 234;—K. Seham, im 
Engl. et Prantl Pilstam. IV, 2. (1895) 156;—Brigham in Ka Hana Kapa (1911) 
1S, fig. 2, (the plant figu sits ca De Brigham’s work is not Ochrosia sandwicensis, 
but Xylosma Hillebrandii Wawra). 
. V. (1862) 333; Ae Mann 
pb 
= 
a 
Leaves 3 to 4 ina whorl, elongate oblong, on petioles of about 15 to 25 mm, shortly 
acuminate, chartaceous, shining above, the close and faint nerves parallel and at Reon 
right angles to _ midrib, and united by a — intramarginal nerve; 
Pound, 10 to 16 em long, div a breaiints. 
= 
oO 
Sc 
a 
> 
on 
~ 
“ta O 
oO 
— 
— 
i] 
4 
a 
wo 
or 
ct 
° 
dentiform: ea yx 2 to 7 mm ats aeais lanceolate teeth ets 
iat "colored, oe fragrant, hairy inside, dilated aioe the thioat, leben, Aes? actudat 
413 
