Genus Isodendrion — St. John 
245 
in anthesis; the lower petal the largest, 10 
mm. long (when boiled), the limb 2.8 mm. 
long, 2.5 mm. wide, broadly oval, thickened 
and fleshy but the pinnate venation visible, 
the apex cucullate recurved, densely appressed 
white pilosulous without; claw 7.2 mm. long, 
2.2 mm. wide, oblong but narrowing towards 
the base, 5 -nerved from the base, membran- 
ous below, fleshy toward the limb, the back 
appressed pilosulous; lateral petals 9-5 mm. 
long, appressed pilosulous without, oblong 
spathulate, the limb 2.7 mm. long, 2.4 mm. 
wide, broad ovate, fleshy; claw 6.8 mm. long, 
1.9 mm. wide, 5-nerved, oblong but nar- 
rowed at base, membranous; upper petals 9-3 
mm. long, pilosulous without, the limb 2.6 
mm. long, broadly oval, fleshy, little con- 
tracted at base; claw 6.7 mm, long, oblong 
but narrowed at base, membranous 3-nerved 
at base; stamens unequal, the upper ones 
smaller and unarmed and glandless; lower 
stamens with filaments 1.4 mm. long, sub- 
ulate, with a thickened dorsal gland; anthers 
1.2 mm. long, 0.9 mm. wide, ovate, bearing 
a curved apical prickle 0.1 mm. long; ovary 
I. 5 mm. long, obliquely lanceoloid, glabrous; 
style 5.7 mm. long, terete, pale glabrous; 
stigma oblique, orbicular; fruit unknown. 
TYPUS: Molokai, 1851-1855, J. Remy 333 
(P), (st. fl. If.). 
The species is named with reference to its 
occurrence on the island of Molokai. 
II. Isodendrion pyrifolium Gray, Amer. 
Acad. Arts and Sci., Proc..2: 324, 1852; 
Gray, U. S. Explor. Exped. (official ed.) 
15 (1): 93-95, 1854, Atlas pi. 8, 1856; 
(public ed.) Botany, Phanerogamia 1: 
93-95, 1854, Atlas pi. 8, 1857. 
illustrations: Figure 11. 
DESCRIPTION OF TYPE SPECIMEN: Shrub; 
"about 6 feet high," freely branched with 
several ascending secondary branches; older 
branches 3 mm. in diameter, the bark reddish 
brown, smooth but with persistent, appressed 
white puberulence, and rough from the per- 
sistent stipules; leaf scars 2-2.2 mm. wide. 
obovate-shield-shaped, pale with 3 bundle 
scars; nodes 3-15 mm., commonly 3-10 mm. 
apart; leafy branchlets 1.5-3 mm. in diameter, 
leafy for 5-20 mm., bearing 4-8 leaves in a 
terminal crowded plume, the leaves mostly 
ascending; this upper stem closely appressed 
white puberulent but stem and hairs both 
largely concealed by the crowded, imbricate 
stipules; stipules 4-4.7 mm. long, narrowly 
deltoid, slightly oblique, the heavy raised 
midrib densely appressed puberulent, the 
sides brown membranous and ciliolate; peti- 
oles 5-9 mm. long, slender, closely appressed 
white puberulent; blades 2.5-5 .4 cm. long, 
12-28 mm. wide, chartaceous, above dark 
green, subglabrate except for the veins 
towards the base, below paler and appressed 
puberulent, ovate or even elliptic, the margin 
subentire or on the larger leaves barely sub- 
serrulate, the veins not conspicuous; flowers 
axillary, single; peduncle 4-6 mm. long, 
canescent, bracted; pedicels 3-4 mm. long, 
canescent; sepals 3.9-4. 1 mm. long, 1.5-1. 7 
mm. wide, broadly lanceolate, 3-nerved with- 
in the central large, thickened, closely ascend- 
ing hirsutulous area, the margins membran- 
ous; corolla irregular, the lower two thirds of 
the petals forming a channel-like claw, the 
limb expanding and reflexing in anthesis; 
lower petal the largest 8.2 mm. long (when 
boiled), 2.1 mm. wide, contracted two thirds 
way from the base, both the claw and the 
limb elliptic, the upper two thirds fleshy and 
thickened, from the base 5-nerved, claw 5 
mm. long, 2.1 mm. wide; lateral petals 7.8 
mm. long, 2 mm. wide, scarcely contracted 
at the apex of the fleshy claw, 3-nerved from 
the base; upper petals 7.1 mm. long, 1.5 mm. 
wide, the claw broad ligulate, 3-nerved from 
the base, the claw slightly broader and oval 
and somewhat fleshy; stamens equal 1.9 mm. 
long; filaments subulate; anthers 1.1 mm. 
long, 0.7 mm. wide, the cells narrowly ob- 
long, diverging at base, the apex barely 
minutely apiculate; ovary 1 mm. long, nar- 
rowly ovoid, 3-angled; style 4.5 mm. long, 
the lower half subulate, the upper half 
