NEW SPECIES OF TREES FROM BOLIVIA 263 
abruptly contracted into a short and ein mostly obtuse 
lu Midrib 
sessile, rather densely fruited, the rachis and pedicels very stout 
the latter little longer than broad, annular-roughened, articulated 
with the very short stipe of the fruit, which is not so thick as its 
pedicel. Mature fruit usually a little more than 2 cm. long and 
nearly or quite as broad, pear-shaped when young, becoming 
nearly ee —— for the narrow base, which remains 
unchanged to a short thecaphore. Body of fruit obscurely 
costate or ela riberealae teeta and soitly and finely 
tomentose. 
First collected by Mr. Miguel Bang, on the hills near Tipuani. 
Collected also by H. H. Rusby in October, 1921, on the Mulford 
Biological Exploration, at Rurrenabaque, Bolivia, Nos. 779 and 
1590; also No. 2178 (‘‘Guapi B’’). All the spurious cocillana 
bark that has reached our market up to the present has been 
derived from this species. 
A good-sized forest tree of the Mapiri and Beni River region, 
growing mostly on the hillsides in relatively dry soil, the bark 
roughly striate and shreddy, and peeling in long, fibrous, thin 
strips. 
~ 
Guarea alborosea Rusby, sp. nov. 
Glabr ge te ees and lower surface of midrib finely 
verrucose pillose in the dried state. ok and rachis 
rather stout: doas ur ele: together 2-4 dm. long, the petiole 
about one-fifth of the total length, flat on the bn surface, the 
leaflets five to ten pairs, nearly opposite, the lower somewhat 
smaller. Petiolules 4-8 mm. long, stout, lightly channeled above, 
like the midrib. Blades io-38 cm. long, by 4-8 cm. wide, thick- 
ish, pale underneath, oval or slightly narrower either below or 
side, not opposite, straight and slender, moderately spreading, 
falcate wens the margin, connected by the coarsely reticulate 
ertiari Inflorescence axillary, racemose, simple, or occasion- 
ally slightly branched = the base, the racemes recurved-pendu- 
lous, often 2-3 dm. long, 1.5-2 cm. ee densely flowered, the 
rachis slender, loaaty 1 nodose by th e flower-scar s, the bractlets 
minute, the flowers divaricate. Pedicels lender articulated 
