PITTIER——-PLANTS FROM COLOMBIA AND CENTRAL AMERICA. 479 
Type in the U. S. National Herbarium, no. 677738, collected in forest near 
Caldera, Chiriqui, Panama, in flower and fruit, March 21, 1911, by H. Pittier 
(no. 8350). 
The most conspicuous feature of this species consists in the irregularity of 
the leaves, which are at times 2-foliolate, one of the leaflets then with a longer 
petiolule, and at other times regularly ternate. But for this particular the 
description agrees in the main with that of Protium hostmanni Engl. and 
also with Protium confusum (Rose) Pittier,® both of which have from 3 to 7 
leaflets. 
The tree is known among the natives under the name of ‘ chutra.” 
RUTACEAE. 
THREE NEW SPECIES OF ZANTHOXYLUM FROM PANAMA. 
Zanthoxylum panamense P. Wils., sp. nov. 
A tree, 10 to 15 meters high, the trunk 30 cm. in diameter at the base, armed 
in its lower third with conical corky prickles; twigs puberulent with mostly 
appressed hairs, leaves odd-pinnate, 10 to 20 em. long; petioles and rachis 
grooved above, glabrous or somewhat puberulent; leaflets 5 to 9, opposite or 
subopposite, oblong-lanceolate to obovate or elliptic, 4 to 9 em. long, 2 to 4 cm. 
broad, acuminate at the apex, acute to cuneate and more or less inequilateral 
at the base, short-petioluled or subsessile, lustrous and glabrous above, paler be- 
neath, glabrous and reticulate-veined, the margin entire or obscurely crenulate ; 
pellucid glands scattered, unequal in size, the marginal glands rather distant; 
inflorescence terminal, paniculate, the branches densely puberulent; flowers 
unknown; sepals 5, triangular ; immature follicles 3 or 4. 
Type in the U. S. National Herbarium, no. 677881, collected on Mamei Hill, 
Canal Zone, Panama, altitude 20 to 90 meters, July 6, 1911, by H. Pittier (no. 
3809). 
The corky prickles of the lower third of the trunk are said to be often hollow 
and inhabited by ants. 
Zanthoxylum pittieri P. Wils., sp. nov. 
A tree, 20 meters or more in height, with a trunk 35 to 40 cm. in diameter, 
armed with stout hard-corky compressed subpyramidal elevations 2.5 to 8 cm. 
broad, these supporting prickles; branches bearing grayish brown, helmet- 
shaped prickles 8 to 12 mm. long; petiole and rachis terete or nearly so, puberu- 
lent; leaves even-pinnate, 25 to 30 cm. long; leaflets 6 or 8, alternate, short- 
petioluled, oblong-oval to oval, 8 to 14 em. long, 5.5 to 8 em. broad, rounded and 
with a short broad mucro at the apex, inequilateral and somewhat rounded 
at the base, entire, glabrous and shining above, paler and more or less puberu- 
lent (especially on the midrib and veins) beneath, the lateral veins 5 to 8 mm, 
distant, prominent, the veinlets reticulate; panicle 20 to 25 cm. long, the 
branches distant, lax, loosely flowered, minutely hispidulous with reddish hairs ; 
calyx of the (immature) staminate flowers 1 to 1.2 mm. broad, the lobes 5, sub- 
orbicular; petals 5, ovate to elliptic, 2 mm. long, 1 mm. broad; stamens 5, the 
anthers elliptic; abortive carpels 3; pistillate flowers and follicles unknown. 
Type in the U. 8. National Herbarium, no. 716006, collected at Boca de 
Paurand6, on Sambi River, southern Darién, Panama, altitude 20 meters, 
February, 1912, by H. Pittier (no. 5713). 
* Teica confusa Rose, N. Amer. Fl. 25: 260, 1911. 
