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PACIFIC SCIENCE, Vol. VI, July, 1952 
base, glabrous, carinate with a thickened axis, 
and with somewhat scarious margins, ap- 
pressed, persistent long after the leaves have 
fallen. Flowers axillary, solitary, on very short 
drooping pedicels, which are bibracteolate next 
the base, and only one or 2 lines long. Calyx 
of 5 nearly distinct, ovate and glabrous sepals, 
quincuncially imbricated in aestivation, not 
at all produced at the base, scarcely a line 
long, persistent. Corolla hypogynous or ob- 
scurely perigynous, regular, apparently white, 
scarcely 3 lines long; petals 5, linear-spatulate, 
connivent for two-thirds of their length into 
a tube, the upper and dilated portion spread- 
ing, convolutely imbricated in aestivation, 
as in Violeae, marcescently persistent. Stamens 
5, hypogynous or obscurely perigynous, 
alternate with the petals and much shorter 
than they, scarcely exceeding the ovary, all 
similar, entirely unconnected, glabrous. Fila- 
ments subulate-linear, flattened, about the 
length of the anthers which terminate them, 
destitute of any dorsal or terminal append- 
ages. Anthers oblong, inappendiculate, ex- 
actly like those of the foregoing species. Disk 
none. Ovary, ovules, style, stigma, &c., 
nearly as in the foregoing species. Mature 
fruit not seen. — The leaf-bearing and flower- 
ing branches are about a quarter of an inch in 
diameter: the flowers are small and incon- 
spicuous. 
Plate 9. — Isodendrion longifolium. 
Fig. 1. Stipules, front and back view, en- 
larged. 2. Diagram of the flower. 3. A flower, 
enlarged. 4. A petal, more enlarged. 5. Sta- 
mens and pistil, magnified. 6. The same after 
removal of the stamens. 7. Vertical section of 
the ovary, magnified.” 
From measurements given in Gray’s text 
and after comparison with his other two 
species and their illustrations, it is deduced 
that his habit sketch is magnifiedXl; fig. 1, 
X4; fig. 2,X16; fig. 3,X8; fig. 4,X10; figs. 
5, 6, and 7,X5. Our Figure 7 reproduces 
Gray’s at 14 his scale of magnification. 
For a discussion of the type locality, see the 
present treatment of I. pyri folium. 
type: ”Kaala Mountains, Oahu, Sandwich 
Islands,” U. S. Exploring Expedition under 
Capt. Wilkes (Isotypes seen: GH, US). 
The collector, Pickering, stated (1854: 400) 
that the flowers were "inconspicuous, green- 
ish.” 
The species was obviously named from the 
Latin longus, long; and the Latin folium, leaf. 
8. Isodendrion Lydgatei sp. nov. 
ILLUSTRATIONS: Figure 8. 
DIAGNOSIS TYPi: Frutex, ramis 3 mm. dia- 
metro, cortice brunneo glabro laevi sed asper- 
rato a stipulis persistentibus, cicatricibus 1.5- 
2.2 mm. latis rotundato-scutelliformibus 
pallide brunneis, fasciculis 3, ramulis foliosis 
5-10 mm. longis 2 mm. diametro glabris 
viridibus plerumque a stipulis aggregatis oc- 
cultantis 4-5 folias in fasciculem ferrentibus, 
nodis 1-14 mm. plerumque 1 mm. distanti- 
bus, stipulis 2. 3-3. 5 mm. longis 1.1-1. 9 mm. 
latis oblique deltoideo-lanceolatis vel ob- 
lique lanceolatis stramineis marginibus mem- 
branaceis ciliolatis sed jam erosis carina in- 
crassata cartilaginea longe durantibus, peti- 
olis 1-2.5 mm. longis validibus anguste 
alatis, laminis 5-8 cm. longis 18-30 mm. 
latis subcoriaceis glabris oblongo-oblance- 
olatis obtusis minute nervosis contortis ele- 
vatis marginibus minime sinuatis, floribus 
solitariis axillaribus, pedunculis 1 mm. longis 
bracteatis, pedicellis 1 mm. longis, sepalis 
3-3.3 mm, longis 0.9-1. 2 mm. latis medio- 
crite vel anguste deltoideo-lanceolatis 3- 
nervosis glabris subviridibus chartaceis sed 
marginibus membranaceis ciliolatis, petalis 
inaequalibus, petala inferiora 7.5 mm. longa 
1.2 mm. lata (postquam bullanda) ungue 5.8 
mm. longo 1.2 mm. lato ligulato 3-nervato 
infra membranaceo tertia exteriore crassa 
carnosa et profunde canaliculata, limbo 1.7 
mm. longo 1.5 mm. lato ovali carnoso opa- 
quo, petalis lateralibus 7.2 mm. longis un- 
guibus 5 mm. longis 1.2 mm. latis mem- 
branaceis 3-nervatis subligulatis sed in medio 
latioribus ad apicem canaliculatis, limbis 2.2 
mm. longis 1.3 mm. latis ellipticis semiopa- 
quis, petalis superioribus 6.6 mm. longis un- 
guibus 4.7 mm. longis 3-nervatis ligulatis 
membranaceis, limbis 1.9 mm. longis 1.2 mm. 
