Sapindaceae. 
Alectryon macrococcus Radlk. 
Mahoe. 
(Plates 107 and 108.) 
ALECTRYON MACROCOCCUS Radlk. in Sitzber. k. Bayer. Acad. XX (1890) 255, et in 
Engl. et Prantl Pflzfam. IIT. 5. (1895) 333, ne in Bull. Hawaii Bd. Agric. and 
Forest. I. (1911) 1;—Rock Rep. Hawaii Boar Srna and For. (1910) 81. pl. 19. 
et Bull. Bd, Agric. and For. I (1911) 2. pl. n part.—Mahoe gen. nov.? Hbd. 
Haw. Isl. (1888) ee sp. Del ‘Castile Lil. EY, Ine.” Mar. Pac. VI: 
(1890) 144 in obs, ad. Dod. —Vulgo Mahoe in Molokai et Maui (quo nomine 
in Nuov- Fence ae Rialicytus: vantages Forst. salutatur t. Kirk. in Forest Fl. 
N.-Zeal. 1889. 3.). 
Medium sized tree; branches era glabrous, young delggaet pirey with new leave 
covered with an appressed yellowish silky tomentum; e's > pair of banfietas 
the latter large, opposite, elliptical or subovate, obtuse t both « ends - with an acuminate 
apex, petioled, entire undulate, coriaceous to og ta aceon, 10 to 1 long, 4 mally 
wide, the lateral nerves oblique; shining above, den tomentose un¢ derneat h 
yellowish brown toment um; panicles axillary; aie reels small, on pedicels of 2 mm, 
nt 
calyx 5-lobed, the lobes 2 mm, subacv ite, persistent with the you be fruits; 7 none, 
rudimentary; stamens 6-8, in sinuses within the pubescent gee seg ae , filar ents very 
short, hirsute; anthers red, 1 mm long, subdidymous at base; vary compressed 
densely hirsute, 1 to 2 celled; way short, almost arche d, oe a a bifid sletias male flowers 
unknown; fruits of 1 to 2 cocci; young fruits covered den ely with yellowish- golden 
setulose hair, crowned by the remnants of the style, — frit glabrous, dark brown 
corticose-coriaceous, ates acto in diameter; or eoceus with 1 to 2 pores 
ones, largest for the genus; arillus sear fArict, seeds aes a Tehavacdias testa, brown, shining, 
(In the Fixes of the College of Hawaii No. 42), 
The Mahoe, which is the single representative of the genus Alectryon in the 
Hawaiian Islands, is a medium-sized tree 20 to 25 feet tall, with a trunk of per- 
haps 6 to 8 inches in diameter. The bark is brown, somewhat rough; the wood 
is hard, dark yellowish-brown, and very tough. 
It is an ungainly tree. The branchlets and inflorescence, as well as young 
fruits, are covered with a dense coat of silky-brown hair; the leaves are large, 
having from 2 to 4 leaflets, which are glabrous above and tomentose underneath. 
The fruits of the Mahoe, which are of very large size, have the color of a 
potato and are perfectly smooth. They hang in clusters from the branches and 
become ruptured when mature, the fissure being irregular, exposing a bright 
scarlet aril and the glossy surface of the chestnut-brown orbicular seed, giving 
a not altogether unpleasing contrast. Flowering and fruiting trees were ob- 
served by the writer during the month of November, who would judge, how- 
ever, that the flowering period would fall during the late summer months, as 
most of the trees bore young fruits and old ones from the previous year 
The Mahoe inhabits the dry regions on the leeward side of the aa. It 
is very scarce on Oahu, where it grows in Makaha valley of the Kaala range, 
and practically extinet on Molokai; on Kauai it was found by Mr. Francis Gay 
back of Makaweli, while the ue discovered a new locality from which it had 
not been reported previously. About seven miles from Ulupalakua, on the 
Island of Maui, is a small area of forest on the lava fields of Auahi. Unprom- 
ising as it lovle: from the road, this forest is botanically, nevertheless, one of the 
richest in the Territory. It is there that the Mahoe is not uncommon, and still 
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