262 NEW SPECIES OF TREES FROM BOLIVIA 
The bark of this species is one of those that has very commonly 
occurred in commerce in this country under both names, coto 
and paracoto, but sold under either name it is absolutely 
spurious and medicinally worthless, so far as known. 
Aerodiclidium benense Rusby, sp. nov. 
Specimen in mature fruiting stage. Glabrous, ae twigs 
numerous, rather slender, terete, densely leafy at the summit. 
Leaves, including the petiole, 10-15 cm. long, 3-5 cm ts oad. 
Petioles 5-10 mm. long, slender, sharply channelled above. 
Blades thick and coriaceous, lustrous above, lanceolate, abruptly 
th 
the margin, the reticulation fine and sharp. Margin entire, very 
slightly revolute. Panicles ian. less fae half the length of 
their leaves, stoutly peduncled, having one to jour shortly and 
stoutly pedicelled fruits, the pedicels strongly thickened upward. 
Calyx-cup subhemispherical, about 1.5 cm. broad, hard a nd thick, 
projecting paid pevond the strongly recurved limb so as to 
mouth, the limb thin, irregularly crenate-dentate. 
Fruit about Z cm. long cad two-thirds as broad, oval to ovoid, 
light brown, glabrous, strongly wrinkled at the base and very 
shortly stipitate, the rounded summit topped by the very short 
stout style 
Collected by Dr. O. E. White at the second portage of the 
Bopi River, Bolivia, at an altitude of about 2000 feet, August 
8, 1921. Mulford Biological Exploration No. 649. 
Dr. White says: ‘‘A small evergreen tree 20 to 30 feet high, 
trunk 6 inches in diameter, growing in damp, partly shady 
places near the river bank. The fruit is green with white specks, 
the cup brilliant scarlet-red. Not common.” 
Guarea Bangii Rusby, sp. nov. 
Only fruiting eS seen. Glabrous, with the exception 
