New Species of South Amebican Plants 147 



widely spreading, sharply 5-angIed, the intemodes about 2.5 

 cm. long. Petioles very short, about as broad as long, the blades 



5 to 10 cm. long, 2 to 4 cm. broad, inequilaterally ovate with 

 broadly cuneate base and acuminate and acute summit, rather 

 distantly serrate-dentate, with very small and short teeth, thin, 

 the principal secondaries 5 to 6 on each side, very slender, light- 

 colored, not prominent. Heads closaly sessile, 6 to 7 mm. long 

 and nearly 10 mm. broad, as pressed, the involucre broadly 

 campanulate, about equaling the pappus, its scales in about 



6 series, the outer successively shorter, varying from ovate to 

 lanceolate, with attenuate, pungent, spreading or recurved 

 summits, the inner with purplish-brown summits. Flowers i 

 cm. long, the akene about one-sixth of the length, light-brown, 

 hispid, obovoid, truncate, the pappus rather sparse and coarse, 

 the outer about a fourth the length of the inner, which is nearly 

 half the length of the puberulent corolla. Tube proper of the 

 corolla about as long as the pappus, exceedingly slender, abruptly 

 expanded into the limb, which broadens gradually to the summit, 

 where the teeth are lanceolate, acutish, nearly 2 mm. long. 



"Shrubby, 3 feet high. Open place by streams in the 

 forest, 5 miles north-east of Bonda, about 150 feet, January 14. 

 Flowers rosy." (Herbert H. Smith, Colombia, No. 1982.) 



Addisonia boliviana. 



Densely and somewhat harshly scurfy-puberulent. Branches 

 erect, densely massed, virgate, slender, terete. Leaves (only 

 the upper seen) 4 to 6 mm. long, i to 2 mm. wide, or 3 mm. if 

 the revolute margins are flattened out, sessile, oblanceolate with 

 tapering base and mucronulate summit, thick, the midrib 

 strong, the margins strongly revolute, obscurely denticulate, 

 gradually reduced to erect bracts on the short branchlets. 

 Heads l cm. long, the involucre about two- thirds of the length, 

 turbinate or narrowly campanulate, the outer scales successively 

 shorter, all thick and rigid, lanceolate, acuminate and pungent, 

 sub-carinate, purplish above. Akene, in the flowermg stage, 

 2.5 mm. long, slenderly obconical, black, sharply angled, min- 

 utely hispid. Pappus purple, 6 mm. long, scanty, coarsely 

 serrate, somewhat unequal. Corolla 9 mm. long, purplish, 

 narrowly infundibular, the base slightly dilated, and gradually 

 and slightly dilated above the middle, the lobes 1.5 or 2 mm. 

 long, recurved, oblong, acutish. Stamens nearly equaling the 

 corolla-tube, the anthers linear. Style divided nearly half-way, 

 the branches long-exserted, recurved, moderately dilated and 

 flattened upward. . . 



Specimen unique, collected by Miguel Bang in Bolivia, 

 without number, locality or date. 



Dr. Robinson has discussed the validity of the genus Addt- 

 sonia, referring it to a section of Pigueria. While strongly 



