Genus Isodendrion — St. John 
229 
4. 5-5. 5 mm. long, 2. 3-2. 7 mm. wide, lance- 
ovate, apiculate, firm, greenish, 5 -nerved in 
the thickened central strip and there closely 
appressed puberulent, the narrow sides mem- 
branous, glabrous, the margins ciliate; corol- 
la whitish, irregular, the lower two thirds of 
each petal forming a channel-like claw, im- 
bricate laterally, the upper ones outside, the 
lower inside, imitating a corolla tube, the 
petals without densely appressed puberulent 
up the middle of the claw and generally on 
the limb, the limb expanding and reflexing in 
an thesis; lower petal the largest, 18 mm. long 
when fresh (12-14 when dried), the claw 
I'O mm. long, 3-nerved from the base, ligu- 
late, channeled and towards the apex thick- 
ened and very fleshy, the limb 7 mm. long, 
4.5 mm. wide, oval, thick, fleshy, opaque, 
creased down the middle; lateral petals 15' 5 
mm. long, the claw 9.7 mm. long, elliptic- 
ligulate, 3-nerved from the base, thickened 
and channeled towards the apex, the limb 6 
mm. long, oval, subacute, fleshy especially at 
base; upper petals 14.5 mm. long, the claw 
elliptic-ligulate, 3-nerved from the base, the 
margins membranous, the center strip thick- 
ened, the limb 5.5 mm. long, oval, opaque 
and fleshy particularly at base; stamens sub- 
equal 3.5 mm. long, the filament 1.3 mm. 
long, stout subulate; anthers 1.3 mm. long, 
ovate, the connective of the lower stamens 
prolonged into a stout ascending prickle; 
ovary 2 mm. long, ovoid, 3-angled; style 6.5 
mm. long, stout filiform; stigma oblique, 
crateriform; capsule 7-10 mm. long, 6-8 mm. 
in diameter, ellipsoid in outline, deeply 3- 
lobed, green and tinged with dull red, promi- 
nently veined, beaked with the persistent 
style; placentae 2- or 4-4)vulate; seeds 2.8-3 
mm. long, 1.8-2 mm. in diameter, obovoid, 
the surface shining, olivaceous with blackish 
mottlings, the apex truncate, small circular 
excavate. 
TYPUS: Island of Hawaii, South Kohala, 
Waikaloa, el. 3,390 ft., rare, near top of a 
cinder cone, small woody shrub IVi to IVi ft. 
high, fl. whitish, fragrant, associated with 
Dodonaea, Wikstroemia, Railliardia Menziesii, 
Bidens fdiformis, Sida, and Eragrostis, Feb. 3, 
1949, E. F. Hosaka 3,394 (BISH), (st. If. 
fl. fr.). 
SPECIMENS examined: Hawaii, Waikaloa, 
the same locality as above, Nov. 4, 1948, E. Y. 
Hosaka 3,393 (BISH), (root, st. If. b. fl. fr.). 
The species is named for the collector, 
Edward Yataro Hosaka (1906- ). 
5. Isodendrion lanaiense sp. nov. 
ILLUSTRATIONS: Figure 5. 
DIAGNOSIS TYPi: Frutex, ramis erectis sim- 
plicibus 3-4 mm. diametro, cortice rufo- 
brunneo cum sulcis multis propinquis deinde 
griseo et subsuberoso, nodis prominentibus, 
internodis 1-10 mm. longis juventioris cum 
stipulis rigidis persistentibus, cicatricibus 
1.3-1. 8 mm. latis depresso-obcordatis, fas- 
ciculis 1 late lunatis, ramulis adpressi-puber- 
ulentis etiam in parte defoliata et asperatis a 
stipulis, ramulis foliosis 5-15 mm. longis 
puberulentis sed a stipulis imbricatis clausis, 
foliis 4-9 adscendentibus vel divergentibus 
plumam formantibus, stipulis 3.9-5 mm. 
longis 1.4-1. 8 mm. latis oblique ovatis vel 
oblongo-lanceolatis carina incrassata pallida 
et adpressi-puberulenta lateribus brunneis 
glabris et marginibus ciliolatis, petiolis 3-5 
mm. longis adpressi-puberulentis, laminis 13- 
40 cm. longis 8-19 mm. latis ovalibus char- 
taceis plus minusve perpetuiter in nervis 
puberulis apice breve apiculato vel obtuso 
marginibus apiculato-crenulatis, floribus axil- 
laribus pluribus, pedunculis pedicellisque 2- 
4 mm. longis adpressi puberulentis, bracteis 
3-4 mm. longis stipulaceis ovatis, sepalis 3- 
3.5 mm. longis ovatis in nervo centrali maxi- 
mi albi-adpressi-puberulis lateribus mem- 
branaceis brunneis marginibus ciliolatis, pe- 
talis inaequalibus limbo extra in nervis 
adpressi-puberulentis, petala inferiore max- 
ima spatulata 11 mm. longa (postquam bul- 
landa), limbo 3 mm. longo 2.5 mm. lato 
ovali crassi carnoso in linea media sulcato 
apice retuso revoluto, ungue 7.5 mm. longo 
1.5 mm. lato subrigido canaliculato 5- 
