Leguminosae. 
The Koaia inhabits the very dry districts on the leeward sides of the Islands 
of Molokai, Maui, and Hawaii. On Molokai, it grows at Kalae as well as on the 
edge of the dry canyon below Kamoku, in company with Naio (Myoporum sand- 
wicense), Walahee (Plectronia odorata), Aiea (Nothocestrum), Dodonaea, ete. 
On Maui it can be found on the Kula slopes of Haleakala at an elevation of 
2000 feet or more, together with the Halapepe, while on Hawaii it grows on the 
lava fields of North Kona, especially on the slopes of the ridge between Puua- 
nahulu and Puuwaawaa, associated with Reynoldsia, Maba, Osteomeles (Ulei), 
ete., as well as on the lava fields of Kawaihae iuka, along the road together with 
the ie Naio, Mamani, and Kuluz. 
Koaia wood, which is much harder than the Koa and closer grained, was used 
by the natives for spears and fancy paddles. It is endemic to the islands, and 
was first discovered by Dr. W. Hillebrand, and described by him in his valuable 
work on the Flora of the Hawaiian Islands. 
He also describes a species of Acacia from Kauai, specimens of which were 
sent to him by Valdemar Knudsen of Kekaha, Kauai. He gave it the name 
Acacia Kauaiensis, but does not say whether it is a tree or shrub. As the writer 
did not meet with any trees that would answer the description given by Hille- 
brand, it is here omitted and simply mention made of it. 
The Koaia flowers during the early part of the summer or late spring, but 
flowers and fruits usually can be observed on the same tree during July and 
August. 
MEZONEURUM Desi. 
Cal 
5 nearly all equ ir stamens 10, fre eclinate, ovary — free, wit 3 to many seeds; 
legume flat compressed, sidchigeust. fore dorsal wing; seeds fla t, oc bit exalbumin- 
ous. Trees or climbing shrubs. Leaves bipinnate. Flo jaous red or yell 
A genus of eleven species found in the tropics of the old world, distributed 
from India to Malay archipelago, Queensland, and New South Wales, with one 
species in tropical West Africa, and one in the Hawaiian Islands. 
Mezoneurum Kauaiense (Mann) Hbd. 
Uhiuhi; Kea on Maui. 
(Plates 69, 70, 71.) 
(The native name ‘‘Kalamona”’ is not applied st this eo as stated by Hillebrand, but 
t 
o an introduced speci 
MEZONEUBUM KA ee oe (Mann) Hbd. FI. aw. Isl. a 110; aa —. Ii. FL. 
Ins. Mar. Pacif. VII. (1890) 157.Caesalpinia Kavai nsis Mann P Am, Aca 
Vir, (isis) 64, and Fi. Haw. Isl. (1867), 233; Boa heey Mem. B. P. “B. Mus. Ul. 
11) 1 
Branches loose spreading, eaten. the farsa ~— covered with a hoary pubescence; 
wares abruptly pinnate with 1 to 5 pairs of pinnae, each pinnae with 4 to 8 pairs of leaf- 
lets, the common rhachis 7.5 to as em, the ania 3.5 to 7.5 em; leaflets oblong, 25 ta 30 
mm. 125 m. obtuse at both ends membraneous, on petioles 0 ; stip none or 
small wa poe ceme a os hoary 25 to 75 mm long densely floriferous fro 
base; the pedic 5 to mm, jointed above the middle; bracts ciliate, caducous; 
calyx glabrous eink or ate petals opiakash purple or red, shorter than the ealycine 
181 
