10 



New Species of South American Plants 



angled or sulcate. Stipules nearly i cm. long, ovate, acuminate 

 and acute, brown, thin, caducous. Petioles to 6 cm. or more- 

 long, slender, dilated at the base. Blades i to 1.5 dm. long, 6- 

 to 10 cm. broad, oval-ovate with sub-cordate, slightly oblique 

 base and very abruptly short-pointed acute summit, finely 

 crenate-dentate with minutely apiculate teeth and acute sin- 

 uses, thin, deep-green above, drying brownish beneath, the 

 upper surface finely bullate by the impressed venation, scabrous,. 

 3-nerved, from the summit of the petiole, the principal secon- 

 daries 4 or 5 on a side, strongly falcate-ascending, the venation 

 finely and strongly anastomosing. Spikes one or more in the 

 axils, mostly sessile, 5 to 7 cm. long, rather loosely flowered, the 

 bracts similar to the stipules, the upper successively smaller, 

 the flower-clusters spheroidal, about 3 mm. broad. Plant in_ 

 mature condition, apparently wholly pistillate. Seed reniform^ 

 brown, minutely muricate, 3-nerved along the convexity. 



"Cotana, near Ilimani, 2,550 meters altitude, November,. 

 1910. A shrub, 3 to 4 m. high." (Otto Buchtien, Bolivia, 

 No. 3151.) 



Pilea macrophylla. 



Minutely puberulent under the microscope. Stems erect, 

 elongated, stout but weak, irregularly and obtusely angled and 

 costate. Leaves sessile, those of the pair somewhat unequal, 

 7 to 15 cm. long, 2 to 4 cm. broad, lanceolate with narrowed 

 base and regularly long, acuminate and acute summit, thickish, 

 dark dull green, serrulate with very acute teeth and sinuses, 

 strongly 3-nerved, the nerves prominent beneath, the midrib 

 broad and flat, the nerves connected by very many crooked 

 nearly divaricate secondaries, and similar ones on the outer- 

 sides of the lateral nerves. Cymes slenderly peduncled, the 

 peduncles very unequal, loosely and flexuously branched, the 

 branches loosely flowered, the branchlets thick and fleshy, 

 without bractlets, the flowers minute. 



Specimen unique. Collected by Miguel Bang, in Bolivia,, 

 without number, locality or date. 

 Species near P anomala Wedd. 



Sahagunia colombiana. 



Glabrous. Branchlets rather slender, straight, purple,, 

 terete. Petioles 10 to 15 mm. long, rather stout, purple, grooved, 

 above, the groove continued into the midrib. Blades 8 to 14. 

 cm. long, 3 to 5 cm. broad, oblong or obovate, with narrowed 

 base and the summit very abruptly contracted into an ac- 

 umination 12 to 15 mm. long, 4 to 8 mm. broad, lance-linear 

 and obtuse, the margin obscurely and irregularly sinuate; 

 thickish, dull-green, the venation lightly prominent abovel 



