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E. Lower petal 6 mm. long; apex of connective apiculate; leaf margin distinctly 
serrulate 9. /. maculatum 
C. Stipules ciliate; sepals 3-nerved, thin; blades elliptic or oblong-oblanceolate, 
F. Lower petal 10.5 mm. long; leaf margins entire or subsinuate; anther acicular 
mucronate on apex of connective . . 14. /. waianaeense 
F. Lower petal 12.5 mm. long; leaf margin sinuate-denticulate; anther umbonate 
on apex of connective 13. /. subsessilifolium 
B. Sepals ciliolate; stipules glabrous on the back, 
G. Stipules ciliolate generally; filaments with a distal oblong-oblanceolate gland; 
petal limb glabrous; blades 5-9 cm. long 8. /. Lydgatei 
G. Stipules glabrous; filaments glandless; petal limb ciliolate; blades 3.3-15 cm. long, 
elliptic to oblance-elliptic 1. /. Forbesii 
A. Sepals and stipules pubescent on midrib or central strip and ciliate; petals pilose with- 
out; leaves 1-6.5 cm. long, pubescent at least below, 
H. Blades narrowly elliptic, 
1. Lower petal 14-18 mm. long; lateral petals symmetric; anther with strong, ascend- 
ing prickle; blades serrate, acute .4. L Hosakae 
I. Lower petal 12 mm. long; lateral petals asymmetric; anther with minute reflexed 
mucro; blades crenate, obtuse 3. L Hillehrandii 
H. Blades obtuse, ovate or lance-ovate or oblong-oblanceolate or elliptic, 
J. Blades lance-ovate; filament glandular on the distal side, cruciform at apex 
.2. L hawanense 
J. Blades ovate or widest at or above the middle; filament not cruciform or glandular 
(except in 1. molokaiense) , 
K. Filament with a distal gland; lateral petals with claw with 5 nerves, unbranched 
from base to apex and the limb broad ovate; sepals 4-4.6 mm. long; lower petal 
10 mm_. long 10. /. molokaiense 
K. Filament glandless, 
L. Blades ovate, the margins serrulate; stipule midnerve pubescent, 
M. Limb of lateral petals linear-elliptic, the claw 5-nerved to the apex; sepals 
4-5 mm. long 12. /. Remyi 
M. Limb of lateral petals ovate or oval, the claw 3-5-nerved at base, these 
nerves soon forking; sepals 3-4.1 mm. long, 
N. Lower petal 11 mm. long; petals unequal in length; stipules ovate or 
asymmetrically so; bundle scar 1 5. L lanaiense 
N. Lower petal 8 mm. long; petals subequal in length; stipules deltoid; 
bundle scars 3 11- pyri folium 
L. Blades elliptic or oblong-oblanceolate, the margins undulate; stipules glabrous 
on the back 14. I. waianaeense 
1. Isodendrion Forbesii sp. nov. 
ILLUSTRATIONS: Figure 1. 
DIAGNOSIS TYPi: Frutex ad 8 dm. alto, 
ramis 3-4 mm. diametro cortice nigro-fusco 
transverse asperrato et longitudine sulcato, 
cicatricibus 0.8-1. 5 mm. lato lunato-ovalibus 
pallidibus, fasciculis 3, ramulis foliferis 1.5-7 
cm. longis cum 5-13 foliis adscendentibus 
1.5-2. 5 mm. diametro glabris rubescentibus 
vel viridibus a stipulis persistentibus asper- 
ratis, nodis 1-8 mm. plerumque 3 mm. dis- 
tantibus, stipulis 2. 5-3.1 mm. longis 1.3-1. 5 
mm. lads anguste oblique deltoideis vel 
oblongo-deltoideis glabris carina valde in- 
