158 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM, 
Leaves alternate, imparipinnate, with 5 to 9 leaflets. Rachis 8 to 18 cm. long, 
minutely. pubescent, the petiole about 6 cm. long, thicker and deeply canaliculate at 
the base. Leaflets petiolulate; petiolules pubescent, those of the lateral leaflets 7 
to 10 mm. long, that of the terminal 15 to 18 mm.; leaf blades oblique, oblong or 
oblong-lanceolate, more or less acute or rounded and uneven at the base, acutely 
acuminate at tip, 9 to 22 cm. long, 4 to6 cm. broad; margin entire; venation impressed 
above, prominent and sparsely pubescent beneath, the primary veins running straight 
to the margin and then arcuately anastomosed. Panicles axillary at the end of the 
branchlets, equal in length to the leaves or shorter, ramified and densely flowered. 
Rachis more or less ferruginous-pubescent. Flowers (only the male ones known) 
small, pedicellate, 1 to many-clustered. Pedicels not over 1 mm. long, hairy. 
Calyx hairy, about 0.7 mm. long, 5-lobulate, the lobules rounded-obtuse; petals 5, 
1.5 to 1.7 mm. long by 0.5 to 0.7 mm. broad, more or less oblong-elliptic, acute or 
irregularly denticulate at tip, pale yellow, erect or spreading; stamens 10, the longest 
hardly exceeding the corolla; anthers orbicular, depressed, emarginate at base, bright 
yellow; rudimentary pistil obscurely 5-parted at tip. 
CoLoMBIA: Buenaventura, western coast, Triana (type). 
Panama: Loma de la Gloria, near Faté, Province of Colén, flowers, August 4, 1911, 
Pittter 4101 (U. 8. Nat. Herb.). 
Differs from 7. guianensis Aubl. by its larger, always acutely acuminate leaflets, its 
shorter and more compact panicles, and its smaller flowers. Our specimens differ 
from those described by Triana and Planchon in having from 5 to 9 leaflets instead of 
the constant number of 5.! 
Tapirira chagrensis Pittier, sp. nov. 
A tree about 20 meters high, the trunk 35 to 40 cm. in diameter at the base. Trunk 
straight, 8 to 10 meters from ground to first limbs. Ramification ascending, irregular; 
crown elongate, flattened at the top. Bark grayish and rimose on the trunk and larger 
limbs, light brown, obscurely sulcate, and lenticellose on the younger growth. 
Leaves entirely glabrous, 9-foliolate; rachis 12 to 25 cm. long, the petiole 6 to 10 cm., 
broadly flattened above with expanded base, finely striate longitudinally. Leaflets 
opposite, petiolulate; petiolules shallowly sulcate with a middle ridge in the furrow, 
those of the lateral leaflets 1 to 1.5 cm., the terminal one about 3 cm. long. Leaflets 
coriaceous, oblique, ovate or obovate to elliptic, unequally cuneate at the base, nar- 
rowed at the tip into a narrow rounded acumen, 8 to 17 cm. long, 3 to 6.5 cm. broad; 
margin entire; venation subimpressed and finely reticulate above, prominent beneath, 
the primary veins profusely connected by transverse veinlets and arcuately anasto- 
mosed at their ends. 
Panicles axillary to the uppermost leaves, short (12 to 15 cm. long), branching only 
once, rather few-flowered, more or less pilose-pubescent. Male flowers sessile; calyx 
about 1.5 mm. long, sparsely hairy outside, the 5 lobules acute or subacute at tip, the 
corolla white, the petals 5, naviculiform, erect, about 2.8 mm. long and 1 mm. broad, 
pointed at the tip. Stamens 10, included or slightly exserted; anthers small, yellow. 
Rudimentary pistil rounded, stiffly hairy. Female flowers and fruit unknown. 
Type in the U. 8. National Herbarium, no. 678552, collected in forest along the 
Chagres River above Alhajuela, Province of Panama, Panama, May 13, 1911, male 
flowers only, by H. Pittier (no. 3503). 
This species belongs evidently to Eutapirira, but differs obviously from those 
hitherto described by the absolute smoothness of its leaves, the peculiar appearance 
of the petioles, and the special disposition of the flowers, which are quite sessile and 
mostly single along the rachis. 
‘In Mart. Fl. Bras. 12?: 377, Engler curiously attributes to the species of his section 
Eutapirira irregularly serrate leaflets. We have seen the four species described by him 
as belonging to this section and in all the leaflets have a plainly entire margin, more or 
less revolute in dry specimens. 
