174 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
Dulongia integerrima Turcz. differs from Willdnenow’s species by its leaves being 
periectly entire, twice as large, and one-half as broad as in that species; the stigmas, 
also, are said to be supported by very short styles. Dr. Britton referred to this species 
Rusby’s no. 2521 collected at Mapiri, Bolivia. In the specimen of this collection at 
hand almost every leaf bears a few irregularly placed teeth: they are larger, but never 
twice as large, and decidedly not one-half broader (if a little so), as in D. laticuspis. 
In the only flower that was available for study, there were 3 stigmas, this being with- 
- out doubt an anomaly, but they were just as sessile as in D. acuminata and D. lati- 
cuspis, Taking into consideration, also, the wide distance that separates the two 
localities where the specimens were collected, I feel inclined to consider Rusby’s 
plant a distinct species; but I must refrain from describing it as such, on account 
of the insufficiency of material at hand. 
Following the law of priority, the name Dulongia was dropped and Phyllonoma 
maintained by Bentham and Hooker. - Also the genus was transferred from the Celas- 
traceae, where it had been placed by Kunth, to the Saxifragaceae, to which it belongs 
by a majority of its structural characters. 
Dr. Engler@ admits only two species, viz, P. ruscifolia Willd., of New Granada 
(Colombia), which he characterizes by its entire leaves and longer pedicellate flowers, 
and P. laticuspis (Turez.) Engler with serrate leaves and short-pedicellate flowers, 
from the high mountains of Mexico. This evidently leaves out the species of the 
Nova Genera et Species, minutely described by Kunth, apparently from the same 
specimens as those on which Willdenow established h's species. Should this view 
be maintained, there would now be the following species: 7. ruscifolia Willd.=P, 
( Dulongia) integerrma Turcz., with entire leaves; 1’. laticuspis (Turcz.) Engler, serrate 
on almost the whole margin of the leat; ?. (Dulongia) acuminata H. B. K., serrate on 
the upper half of the leaf only; Rusby’s species with subentire leaves; and lastly the 
two Costa Rican species here described, that differ from all the others more than these 
among themselves. On account of the scarcity of material in the European and 
American collections, the true status of the doubtful forms can scarcely be determined 
at present. 
Phyllanthus salviaefolius H. B. K. Nov. Gen. & Sp. 2: 117. pl. 107. 108. 1817. 
Phyllanthus floribundus WW. B. K., loc. cit. 
Kirganelia salviaefolia Spreng. Syst. 3: 48. 1828. 
Oxalistylis kunthiana Baill. Etud. Gen. Euphorb. 629. pl. 24. fig. 15-19. 1858. 
A small tree about 3 meters high, with numerous, alternate, tortuose, almost. hori- 
zontal limbsand a depressed crown. Pseudo-branchlets 15 to 25 cm. long, caducous, 
obscurely 4-angled, covered, like the ends of the permanent branches, with dense, 
furfuraceous, brownish hairs, and provided at the base with 3 ovate, acute, stipule- 
like scales. 
Leaves alternate or distichous, petiolate, with narrow, pointed stipules, 6 to 7 mm. 
long; petioles short (4 to5mm.), hairy; leaf blades 4 to8 cm. long, 2 to3cm. broad, 
ovate-oblong, rounded or subcordate at base, narrowing gradually to an acute tip, 
densely furfuraceous beneath, more or less smooth above except on main nerves; 
primary and secondary veins hirsute and very apparent on both sides, the latter 
regularly alternate, arcuate and parallel. 
Flowers diclinous, forming short-pedunculate, compound corymbs in the axils of 
leaves, each secondary cluster made up of I, 2, or more pistillate flowers, accompanied 
by | to 3 staminate flowers, all together surrounded at base of pedicels by an involucre 
of generally 4, lanceolate, hirsute bracts, the larger of which are about 5 mm. long. 
Staminate flowers small; pedicels glabrous, 3 to 5mm. long. Sepals 6 in two alter- 
nate circles of 3, each 1.5 mm. long, | mm. broad, ovate-oblong, with slightly narrower 
claw. Disk cupuliform, plicate; stamens 3 to 9; filaments connate at base in a cylin- 
drical column 0.5 mm. long, then free and unequal; connective broadened; anthers 
bilocular, each cell opening longitudinally. 
@In Engl. & Prantl, Pllanzenfam. 378: 88. 1890. 
