196 Plants Collected in Paraguay. 



The most showy is L. Gamara with flowers of orange and yellow. 

 L. trifolia is a coarse, rank plant, the leaves usually opposite, but 

 sometimes in 3s, with rather small heads of lilac flowers on very 

 long peduncles. They blossom from November to April. 



Lippia angustifolia, Cham., Linnsea, vii, 377. 



Pilcomayo River (860). January-April. 



Stems square, 6-12 dm. high, appressed-hairy. Internodes long. 

 Leaves opposite, narrowly lanceolate, appressed-hairy, serrate, 

 sessile or shortly petioled, 6-10 cm. long, 1-1^ cm. wide. Heads 

 small, on axillary peduncles. The small flowers are nearly con- 

 cealed by the cuspidate-acuminate bracts. Corolla yellow, turning 

 orange with age. Common on the campo among tall grass. 



L<ippia canescens, H. B. K., Nov. Gen., ii, 263. 



Pilcomayo River (905 and 1048). February-May. 



A small prostrate shrub, with heads of purple flowers, and small 

 obovate, serrulate leaves, running on the ground for 6 dm. or more. 

 The heads are conical or cylindrical, 1-3 cm. long, on peduncles 3-4 

 cm. in length. 



Lippia nodiflora (L.), Mx., Fl. Bor. Am., ii, 15. 



Asuncion (163). November. 

 Liippia turiieraefolia, Cham., Linnaea, vii, 217. 



Luque (.575). December. 

 L.ippia urticoides, Steud. Nomencl. ex Schauer, in D.C., Prod., xi, 573. 



Asuncion (242). December. 



A shrub with light gray bark, 3-6 m. high. Leaves ovate, obtuse 

 at apex, rounded or subcuneate at base, very rough like shagreen 

 above, downy and lighter colored beneath. Flowers white, very 

 fragrant, in axillary or terminal racemes or spikes, densely and 

 spirally arranged on the axis. Racemes numerous, often 10-15 

 cm. long. Branches and peduncles white pubescent, the branches 

 4-gonous. Calyx and minute pedicel woolly. This shrub is thickly 

 covered with the flowering racemes when in blossom, and makes a 

 great display on the lowlands at Asuncion where it occurs. 



Liippia ReCOlletaB, Morong, n. sp. 



Suffruticose. Stem nearly simple, or with 1 or 2 long branches from near 

 the base, terete below, tetragonous and deeply grooved above, densely papil- 



