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mulford exploration of the amazon valley 307 



Flacourtl^ceae 



Casearia berberoidia 



Snbglabrous. Braiiclics short, stout, flexuous, gray-brown, 

 very leafy, the leaves crowded at the ends of very short branch- 

 lets. Leaves from 1.5 cm. to 4 cm. long and two thirds or more 

 as broad, on extremely short petioles, obovate with broadly 

 ciineate base, or some nearly orbicular, the summit rounded or 

 obtuse, or occasionallj' very slightly mucronate. Blades thickish, 

 the revolute margin obsoletely and usually obscurely dentate. 

 Both surfaces of a dull yellowish-green, slightly shining above, 

 the coarsely reticulate venation prominent on both surfaces, the 

 secondaries about 4 on each side, connecting at some distance 

 from the margin. Plowers few, crowded at the ends of the 

 branchlets, in the axils of imbricate bracts, which are 3 or 4 mm. 

 long, broadly ovate, acuminate, the inflorescence minutely pu- 

 berulent. Pedicels about 3 mm. long, filiform, bearing several 

 short broad scales at the base of the calyx. Sepals 5, 4 mm. long, 

 oblong or oblanceolate, obtuse. Filaments, staminodia and 

 ovary densely white-pilose, the stamens and style about two 

 thirds as long as the sepals, the style undivided, the stigma 

 capitate. Staminodia more than half as long as the stamens, 

 the upper portion a little broader. 



Rosario Hacienda, pampas near Lake Rogagua, 1,000 feet, 

 H. H. Rushy, November 4, 1921 {no. 1652). 



Casearia albicaulis 



Glabrous, excepting the minutely gray-puberulent inflores- 

 cence. Stems much branched, the branchlets short, rather stout, 

 terete, light-gray, unarmed. Leaves to 10 cm. long, and 4 cm. 

 wide, obovate, abruptly contracted into a petiole about 5 mm. 

 long, and Avith a strongly mucronate summit, shortly and ob- 

 tusely serrate-dentate, thin, the principal veins prominent be- 

 neath, the secondaries about 4 on each side, strongly ascending, 

 the venation coarsely reticulate. Umbels sessile, many-flowered, 

 densely bracted at the base, the bracts short, the pedicels very 

 slender, about 5 mm. long, all gray-puberulent. Sepals 5, lance- 

 olate, 5 mm. long. Stamens 10, at length about equaling the 

 sepals, lightly attached to the base of the sepals. Staminodia 

 about half as long as the stamens, oblanceolate, pilose or serru- 

 late, unguiculate. Pistil 4 mm. long, pilose, the style tapering, 

 continuous with the ovary, the stigma small. 



