150 Plants Collected in Paraguay. 



clawed. Pappus of many lanceolate, ciliate scales twice as long as 

 the densely hispid achenia, No. 514 has much larger heads, soli- 

 tary, on naked peduncles 8-20 cm. long. Rays numerous, 2 cm. 

 long, light yellow, striped, entire or somewhat eroded at the tip. 

 Pappus of about 15 linear-lanceolate, ciliate or lacerate scales, 5 mm. 

 long, twice as long as the hispid achenia. 

 Both species grow in open grounds. 



Poropliyllum ruderale (Sw.), Cass. Diet., xliii, 56. 

 Porophyllum ellipdcum, Cass., 1. c. 



Caballero (475). Asuncion (651). January-April. 



Similar in most respects to no. 889, but the leaves are elliptical, 

 long petioled, glaucous, 4-5 cm. long, 2 cm. wide or less. Achenia 

 subulate, thickly clothed with short, upwardly pointing hairs. Pap- 

 pus minutely hispid upwardly 



I have seen no description of the curious marginal markings of 

 the leaves. They are apparently crenate, but in reality have a wavy 

 outline caused by indentures or depressions, which have below them, 

 sunk in the surface of the leaf, a brownish gland corresponding in 

 curvature with the indenture. 



Foroptiylluiu lanceolatum, D.C, Prod., v, 649. 



Pilcomayo River (889). January. 



Stems rigid, striate, much branched, 6-9 dm. high. Leaves 

 linear-lanceolate, alternate, entire, sessile or the lower shortly 

 petioled, much attenuated at the base, 2^-5 cm. long, 5 mm. broad. 

 Heads 2 cm. high, solitary, on peduncles 4-Y cm. long. Scales in 

 a single series, linear, marked by 2 rows of dark sunken glands. 

 These scales are so closely coalescent when growing as to appear 

 but one tipped with 5 small lobes, but they separate in drying. 

 Achenia linear, minutely striate, 8 mm. long. Scales, corollas, 

 anthers, styles, and achenia all dark purple, causing the whole head 

 to look almost black. An ill-smelling plant. 



Tagetes glandulifera, Sclirank., PL Rar. Monac, ii, t. 54. 



Pirayu (671). = Balansa 912. 



Certainly one of the most curiously constructed plants that I had 

 the pleasure of examining in Paraguay. It grows in masses from 

 2 to 2i m. high on the borders of woods. Leaves pinnate, the leaf- 

 lets crenate, with yellow, often lunate glands beneath the crena- 

 tures, and 1-2 teeth in the marginal space between them, so that the 



