New Species of South American Plants 4V 



attenuate summit. Petioles to 3.5 dm. long, stout, pale-green, 

 strongly sulcate, erect. Blade to 3 dm. long, 2.5 dm. broad, 

 regularly cordate, the sinus broad and acute, the lobes rounded, 

 the summit very abruptly contracted into a short, very acute 

 point, the margin finely serrate with acute teeth. Leaf thin, 

 5 to 7-nerved, the secondaries of the midrib about 12 on a side, 

 extremely slender, nearly straight, the remaining venation 

 obscure. Spikes nearly as long as their petioles, very slender, 

 unisexual, the staminate densely flowered, the pistillate very 

 loosely so. 



Staminate Flowers. — Rachis and bracts clothed with long 

 setose hairs, the sepals terminating in the same. Flowers very 

 minute. 



Pistillate inflorescence clothed with similar, but smaller 

 setose hairs. 



"A shrubby tree, to 15 feet. In a second-growth thicket 

 near Valparaiso, 4,000 feet, January 26. Only one specimen 

 seen." (Herbert H. Smith, Colombia, No. 1433.) 



Acalypha Williamsii. 



Dioecious, only the pistillate plant seen. Softly pubescent 

 throughout. Branches slender, terete, leafy at the summit. 

 Stipules about 8 mm. long, narrow, regularly attenuate from 

 the base. Petioles to 15 cm. long, very slender, sulcate. Blades 

 8 to 12 cm. long, 5 to 10 cm. broad, ovate with slightly cordate 

 base and abruptly short-pointed summit, very thin, gray-green, 

 the margin crenate, 5 to 7-nerved, the lowermost pair of nerves 

 very small, the secondaries about 6 on a side, strongly falcate, 

 then nearly erect, all connected by numerous very slender, 

 rather crooked tertiaries. Pistillate racemes (only 2 seen), 5 

 to 8 cm. long, simple or branched above, filiform, loosely flow- 

 ered. Flowers solitary or two together, very shortly and 

 stoutly pedicelled, the pedicels elongating slightly in fruit, sub- 

 tended by minute bracts. Sepals 4, sub-equal, triangular- 

 lanceolate, acuminate and acute, enlarging but little in fruit. 

 Styles longer than the ovary, finely divided, the divisions nearly 

 parallel. Capsules 3 mm. broad, 2 mm. high, deeply, lobed, 

 muricate. 



"A bush or small tree at San Buena Ventura, 1,500 feet, 

 November 20, 1901." (R. S. Williams, Bolivia, No. 655.) 



Acalypha subscandens. 



Softly gray-pubescent, the hairs of the stem divergent. 

 Stipules 2 mm. long, lanceolate, acuminate and acute, rigid. 

 Branchlets short, slender, leafy at the ends. Petioles 3 to 5 

 mm. long, slender. Blades 2 to 7 cm. long, i to 3 cm. broad, 



