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PACIFIC SCIENCE, Vol. VI, July, 1952 
slender, densely subappressed puberulent; 
blades 1.9-3. 3 cm. long, 8-16 mm. wide, 
elliptic, subcoriaceous, above dark green, be- 
low green, at first appressed puberulent on 
the veins above and below but more densely 
so below, above finally subglabrate except on 
the main veins towards the base, the margin 
strongly crenate, the apex obtuse, secondary 
veins 4-6 on a side, sharply ascending, in- 
arched and connecting well back from the 
margin; flowers single, axillary; peduncles 2- 
4 mm. long, densely appressed white puber- 
ulent, bibracteolate at apex; bracts 2 mm. 
long, sepaloid, lance-ovate, ciliate, puberu- 
lent on the back; pedicels 1.5-3 mm, long, 
densely appressed white puberulent; flowers 
axillary, single, the peduncles 2-4 mm. long, 
appressed white puberulent, bibracteolate at 
apex; pedicels 2-3 mm. long, appressed 
white puberulent; sepals 3. 6-3. 8 mm. long, 
1.8 mm. wide, oblong-oval, the thickened 
central strip 3-6-nerved from the base, this 
strip and a little of the adjacent membranous 
sides toward the tip closely appressed puber- 
ulent, the margin ciliolate; corolla irregular, 
appressed puberulent distally, the lower two 
thirds of the petals forming a channel-like 
claw, imbricate laterally, the upper ones out- 
side, the lower inside, imitating a corolla 
tube, the limb expanding and reflexing in 
anthesis; lower petal the largest, 11.9 mm. 
long (when boiled), the claw 7.4 mm. 
long, 2.2 mm. wide, narrowly elliptical chan- 
neled, 5 -nerved from the base, but the lateral 
nerves forking, the central strip of firm tissue 
containing the veins, the broad margins 
membranous for the lower two thirds, then 
in the upper third the entire width veiny, 
much thickened, fleshy, firmly channeled, 
opaque, the slightly contracted neck long, 
the limb 4.5 mm. long, 2.5 mm. wide, ovate, 
thick, fleshy, firm, with several veins and the 
margin crimped up between the vein ends; 
lateral petals 10.7 mm. long with a short dis- 
tinct neck, the claw 6.7 mm. long, obliquely 
oblance-oblong, the upper side larger and 
more abruptly narrowed at apex, the central 
strip thickened and opaque in the upper third, 
the limb 4 mm. long, 1.9 mm. wide, ob- 
liquely oblong-oval, veiny, thickened and 
opaque; upper petals 10.8 mm. long, almost 
ligulate though there is a very shallow neck 
one third way from the apex, the claw 7 mm. 
long, 1.9 mm. wide, very narrowly elliptic, 
3-nerved from the base, but the lateral nerves 
soon forking, the central strip veiny and 
slightly thickened especially towards the 
apex, the wide margins membranous, the 
whole slightly channeled; the limb 3.8 mm. 
long, 1.9 mm. wide, obliquely oblong-oval, 
veiny, thickened and opaque; stamens sub- 
equal, all with a blunt, recurved mucro 0,1 
mm. long at the apex of the connective, 1.5- 
1.8 mm. long, the filaments 0. 5-0.7 mm. 
long, subulate; the connective swollen and 
probably glandular on the distal side just 
above the base; anthers 1.3 mm. long, 0.8 
mm. wide oblong, the anther sacs submucro- 
nate at base; ovary 2.8 mm. long, 1.2 mm. in 
diameter, lanceoloid; style 5.1 mm. long, 
stout filiform; stigma subterminal, distal, sub- 
orbicular; fruit unknown. 
TYPUS: Oahu, Waianae, on bare rocky hills, 
in 18 — . IF. Hillehrand (GH), (st. If. fl.). 
Hillebrand in his flora (p. 18) includes this 
in 1. pyrifolium Gray and cites this collection 
as "in Waianae,” apparently meaning Waia- 
nae Valley rather than on the Waianae Moun- 
tains. Furthermore, Rock saw the duplicate 
of this in 1914 in Berlin, and copied the data 
as "1869. On rocks in the plains of Waianae, 
Oahu.” 
The species is named in honor of Dr. Wil- 
liam Hillebrand (1821-1886), physician and 
botanist, resident in Honolulu from 1850 
to 1871. 
4. Isodendrion Hosakae sp. nov. 
ILLUSTRATIONS: Figure 4. 
DIAGNOSIS TYPi: Frutex 45-75 cm. alta, 
ramis 4-8 mm. diametro cortice griseo deinde 
albescenti asperato cum sulcis longitudinis et 
stipulis persistentibus, cicatricibus 1.2-1. 5 
mm. latis lunati-ellipticis pallidis suberatis, 
