152 Plants Collected m Paraguay. 



Seiiecio Hiialtata, D.C., 1. c, 417. 

 Buenos Aires (10). October. 



Chaptalia integrifolia (Cass.), Baker in Mart. Fl. Bras , vi, pt. 3, 377. 

 Asuncion (tlO). May-July. 



Chaptalia nutans (L.), Hemsl., Biol. Centr. Amer., Bot., ii, 255. 



Asuncion (747). June. 



This and no. 710 are quite similar and very interesting plants. 

 They grow in the shade of trees on borders of forests and thickets. 

 The large radical leaves, green above, white tomentose beneath, lie 

 in a tuft upon the ground, and the scape produces a large, solitary 

 flower at the summit. Ray flowers whitish, threadlike, fertile, with 

 a long exserted style and double stigma. Disk flowers with a long 

 filamentous tube, so slender as to appear like a bristle of the pappus. 

 Pappus copious, soft, fleecy, white or bronze-tinted. No. 747 has 

 lyrate-pinnatifid, more or less denticulate leaves, while those of 710 

 are entire or sparsely denticulate. The heads are at first nodding, 

 and erect in fruit. 



Trixis diTaricata (H. B. K.), Spreng., Syst., iii, 501. 



Asuncion (768). January-July. 



Stems suflfruticose, slender, sometimes growing to a height of 

 3 m., leaning on shrubs for support. Branches divaricate. Leaves 

 alternate, narrow-lanceolate, entire, nearly glabrous above and white 

 woolly beneath, auriculate, 2-15 cm. long, 5 mm. to 3 cm. wide. 

 Inflorescence in very long (20-40 cm.), terminal, loose panicles. 

 Heads 7-10 mm. high. Flowers all tubular, white. Scales in 2 

 series, the outer few and small, inner about 8, pubescent, ciliate. 

 About 12 flowers in the heads. Pappus white. 



Trixis OCliroleuca (Cass.), H. and A. in Hook. Comp. Bot. Mag., i, 33. 



Asuncion (842); Pilcomayo River (1010). November-April. 

 = Balansa 788. 



Stem very slender, 20-30 cm. high. Leaves mostly in a radical 

 tuft, obovate, rounded or acute at the apex, 4-12 cm. long, 1-3 cm. 

 wide, unequally dentate, sloping into a short petiole. Cauline leaves 

 much smaller, oblong, sessile, acute, sometimes cuspidate. Flowers 

 in terminal corymbs, the branches erect, much divided, the ultimate 

 peduncles 2-3 cm. long. Heads about 1 cm. high. Scales 1-seriate, 



