Plants Collected in Paraguay. 195 



Dianthera obtusifolia (Nees), Morong. 

 Rhi/toglossa obtusifolia Nees, Mart. Fl. Bras., ix, 120. 



Caballero (435) ; Pilcomayo River (1031). January-May. 



Herbaceous. Stem angular, 4 dm. to 1^ m. high. Flowers 

 bluish-purple, with a short tube and broad flaring lobes. The plant 

 varies very much. The leaves are seldom obtuse in my specimens, 

 but generally linear-lanceolate, acuminate, 4-10 cm. long and ^-^^ 

 cm. broad. The specimens from Caballero grew on the railroad 

 track, and are very glabrous, while those from the Pilcomayo grew 

 in muddy places by the river-side, and are hispid hairy, sometimes 

 even spiny, on the angles of the stem. The leaves of the latter are 

 pellucid punctate, those of the former opaque. The flowers from 

 the Pilcomayo were decidedly blue in color, while in the other they 

 were of a rosy-purplish tinge. Perhaps several species are included 

 in these forms. 



Biapedium PoUlianum (Nees), Kuntze, Rev. Gen. PL, 485. 



Asuncion (200). December-April. 



A showy plant, even more noticeable for its bright red flowers 

 than no. 200 a, as the leaves are fewer, the internodes longer, and 

 the flowers more numerous. The corolla is very slender, 2-lipped, 

 2J-3J cm. long, 3 times as long as the linear, acuminate lobes of the 

 calyx ; lower lip with 3 very short lobes. All the parts, even the 

 corolla, are densely pubescent. Growing with no. 200 a, and about 

 the same height. 



I>iapediuii] TT«^eediaiiuni (Nees), Kuntze, 1. c. ? 

 Pilcomayo River (1539). May. 



VERBENACE^. 

 Lantana Camara, L., Sp. PL, 627. 



Luque (344). December. 

 Lantana lilacina, Desf., Cat. Hort. Par., Ed. 3, 392. 



Asuncion (50). November. 

 Lantana trifolia, L., Sp. PL, 626. 



Caballero (599). January. 



Of these Lantanas, the mos tcommon is L. lilacina, with nume- 

 rous heads of lilac flowers, bearing a berry which is blue when ripe. 



