Plants Collected in Paraguay. 207 



nerves and on the margins nearly to the apex. The plant is herba- 

 ceous, with a slender, widely branching* stem, which is glabrous 

 below and pubescent at the summit. Flowers white, in small 

 sessile, axillary heads. Leaves opposite, lanceolate, mucronulate, 

 very glabrous, sloping at the base into petioles 5-10 mm. long, 

 comparatively few, separated by long internodes. Seeds flat. 



Telaiitliera phyloxeroides (Mart.), Moq., D.C. Prod., xiii, pt. 2, 362. 



Asuncion (168). November. 



A weak-stemmed herb in moist grounds, prostrate below and 

 rooting at the nodes, the ascending portion 2-5 dm. high. Flowers 

 silvery-white, in terminal heads, on peduncles 2-t cm. long, very 

 handsome. Heads globular or becoming cylindrical with age, 1-2 

 cm. long. Leaves glabrous, narrow lanceolate, mucronulate, nar- 

 rowed at the base and sessile, 4-8 cm. long. The stems are glabrous 

 below, fringed with 2 lines of hairs on the uppermost internodes. 

 They are also somewhat swollen and ruddy at the nodes. 



Alternanthera pilosa^ Moq., 1. c, 357. Ex descr. 



Asuncion (40). November-February. 



A creeping plant with numerous small sessile heads of white 

 flowers in the axils of the leaves, the stems often rooting at the 

 nodes and running for 10 cm. or more upon the ground. It is 

 much branched, and appears as if in mats. The heads are entirely 

 free from spines, globular or ovoid, 5-9 mm, in length. Leaves 

 spatulate or obovate, the largest blades 2-3 cm. long and 8-10 mm. 

 wide, sloping into a short petiole, scantily pilose beneath. The 

 stems are pilose on the young branches, especially at the axils of 

 the leaves and under the heads where they are almost woolly. 

 Very common along the edges of the sidewalks in Asuncion and 

 in the suburbs. 



Some of this was distributed as A. Achyrantha. 



Alternanthera pungens, H. B. K., Nov. Gen., ii, 306. 

 A. echinata, Sw. in Rees Cyc, Snppl. no. 10. 



Asuncion (39). November-February. 



This plant is prostrate, spreading on the ground for 3 dm. or 

 more, rooting at the nodes, very branching in all directions It is 

 a much larger species than no. 40, though similar in habit, with 

 longer stems and larger leaves, but unlike that it has echinate 

 heads, the bracts and 2 of the perianth segments being armed with 



