138 Plants Collected in Paraguay. 



large branching corymbs of sruall purple heads. Hairs on the 

 peduncles and pedicels glandular. Leaves lanceolate, minutely ser- 

 rulate, the largest 12-15 cm. long, 2-3 cm. broad. A striking plant 

 upon the open campo where it grows. 



Eupatoriiim pallescens, B.C., Prod., i, 154. 

 £. glomeratum, D.C., 1. c. 



Asuncion (630 and 683); Pilcomayo River (957). March-April. 



Stems stout, pubescent, striate, growing on the Pilcomayo to a 

 height of 3 m. Leaves deltoid-ovate, 3-nerved, pubescent, serrate 

 above the sloping base, the largest 16 or 18 cm. long, 5 cm. or more 

 wide. Petiole alate above. Corymbs dense, the flowers massed 

 glomerately. Flowers white. Heads 5 mm. long, 12-15 flowered; 

 scales in 2 or 3 rows, downy, rounded, somewhat spreading, nerved. 

 Achenia glabrous or sometimes minutely downy. 



Eupatorium steTiaefolium, B.C., Prod., v, 158. 

 Gran Chaco near Asuncion (366 a). December. 



Eupatorium urticaefoliiim, L., f. Supp., 354. 



Asuncion (174). May. = Balansa 936. 



Stems 6-12 dm. high, covered with long, spreading, translucent, 

 nodose hairs. Leaves ovate, cuneate at base, obtusely pointed, in- 

 cised-dentate, 2^-7 cm. long, on petioles 6-25 mm. long. Flowers 

 blue. Heads 20-25 flowered, in small corymbs on long, spreading 

 branches. Common in old fields. 



Siipatorium Ternoniopsis, Schultz Bip. ; Baker, 1. c, 334. 



Asuncion (107 and 109) ; Luque (589). = Balansa 784. Novem- 

 ber-January. 



Stems striate, grayish-pubescent, often much branched at the top, 

 sometimes simple, 9-18 dm, high. Flowers blue. Heads small, 

 8-10 flowered. Leaves opposite below, subopposite or alternate 

 above, 2-5 cm. long, 1-3 cm. broad, crenate or serrate, pubescent 

 on both sides, 3-nerved, the nerves prominent beneath, the teeth 

 callous tipped. 



If illougUbya cordifolia (L.), Kuntze, Rev. Gen. PL, 372. 



Gran Chaco near Lympio (182 a and 182J). May. 

 This vine differs from the more common W. scandens in having 

 the stems and leaves densely clothed with a grayish pubescence, 



