Plants Collected in Paraguay. 23 1 



Urera Caracasana (Jacq.), Weddell, D.C. Prod., xvi, pt. 1, 89. 



Asuncion (120); Pileomayo River (873), November-May. 



A climbing shrub, often prostrate or hanging over banks for 2 

 or more metres. It has a rather slender stem, and is armed more 

 or less on the leaves and inflorescence with small stinging hairs. 

 Leaves coarse, cordate, ovate, crenate-dentate, 10-15 cm. long and 

 8-10 cm. broad, on short petioles. Flowers in rather small axillary 

 cymes. The red berry-like utricles which it bears abundantly are 

 the most noticeable part of the plant, and are often seen in thickets 

 or hanging over the banks along the Paraguay River at Asuncion. 

 Common also on the Pileomayo River, supported by other shrubs. 



Parietaria delJilis, Forst., Flor. Ins. Austr. Prod., no. 387. 



Pileomayo River (1052). June. 



Looks much the same as our Southern plant, and found in similar 

 situations in shady woods. 



SALICINEJE. 



Salix Chilensis, Molina, Sag. Stor. Nat. Chil., i, 169 (1782). 

 Salix Humboldtiana, Willd., Sp. PL, iv, 657 (1806). 



Asuncion (788); Pilcoma3^o River (1061). June-September. 



This willow is popularly called Sauce real in Paraguay, and 

 grows from the Amazon to Patagonia on both sides of the Andes 

 Generally it is little more than a shrub 5-8 m. in height, but on 

 the banks of the Pileomayo, I saw large trees at least 15 m. high. 

 Leaves linear acuminate, glabrous, the midrib prominent below, 

 with a fine lateral nerve on each ^side near the margin, serrulate, 

 5-14 cm. long and 5 or 6 mm. wide. 



HYDROCHARIDEiE. 

 L.imno'biuill Sinclair!^ Benth., Bot. Voy. Sulphur, 175. 



Ponds near Asuncion (1559). = Mandon 596 a, from Bolivia. 

 November-December. 



A small plant, with round oval leaves, floating on the surface of 

 the water. The leaves are covered on the upper surface with rows 

 of small tubercles. 



