18 VIOLACEAE. [Isodendrion. 
2. ISODENDRION, Gray. 
Sepals equal, persis stent. Petals nearly equal, linear- spathulate, the 
connective neither spurred nor prolonged above. Style elongate, slightly 
d and thickened near the apex, with anterior stigma. Capsule 
coriaceous, surrounded by the withered corolla, 3-valved, the placentas 
along the middle of the conduplicate valves, with 2—4 seeds. Seeds 
horizontal, obovoid, with smooth crustaceous testa, and a broad circular 
umbonate chalaza at the free end. Embryo straight, in the middle of a 
farinaceous albumen and as long, with orbicular cotyledons, the terete 
radicle as long as these. — Shrubs, with entire leaves and persistent, 
rather intrapetiolar, reeled stipules. Flowers small, axillary, solitary, - 
hortly pedicellate 
A Hawaiian genus, with a place in ut system between Paypayrola, Aubl., and Alsodeia, 
Thouars, of which the former is exclusively American and the latter preponderatingly 
so, with a doubtful representative in the Viti Islan 
Leaves eeoemen pubescent, ovate-oblong, small; stipules silky- 
hai 5p 1. I. pyrifolium. 
eaves C cous, glabrous, oblong, with ‘cuneate ‘base, large; 
had ee triangular or lanceolate I. longifolium. 
eaves chartaceous, A ph we aie 3 with rounded base; sips 
glabrous, subulat 3. I. laurifolium. 
1. I. pyrifolium, Gray, Bot. U. 8S. E. Exp. p. 93, pl. 8. — A spread- 
ing shrub, 2—3 ft. long, the virgate branches with short branchlets, 
foliose near the apex and covered for some distance below with narrow 
lanceolate or subulate, silky-haired, converging stipules of 11/2—2“ in 
length. Leaves membranous, pubescent when young, ovato- or elliptico- 
oblong, obtuse, crenate, 11/2—2' & 3/s—1', on petioles of 3—5. Pedicels 
single, 2—4‘, pubescent, with a pair of rather broad scarious bractlets 
at the middle. Sepals connected at the base, 21/2—3"', lanceolate, silky, 
scarious with thin margins. Petals 5—6”, rather thick, greenish- white. 
Stamens nearly half the length of the sepals, the anthers as long as 
the filaments. Style almost straight, of even height with the petals. 
Capsule 6", each placenta with 2—5 oboyoid pale seeds. — The flowers 
are sweet-scented 
n the serub of the fore-hills and on open ridges. Oahu! in Waianae and on the 
sisoas of Kaala; Lanai! Maui! Oloalu and Wailuku. The specimens from the latter 
Jinan which I refer here, have larger leaves, 3’ X 1}/2’, and agree with forms collected 
y on Hawaii (no. 539) and on Niihau (no. 534). Nat. name: «Aupaka». 
2. I. longifolium, Gray, J. ¢. p. 95, pl. 9. — A glabrous shrub, 6 ft. 
high or more, with rather stout branches and scattering leaves. Stipules 
erect, triangular or lanceolate, 1'/2—2”. Leaves chartaceous, er shining, 
obovate - oblong, obtuse or shortly acuminate, gradually narrowing to the 
