160 PROCEEDINGS OF THE ACADEMY OF [May-Oct., 



River-flats and moist, or frequently desiccated, ditches, in open 

 land, at altitudes below 500 meters, Tropical zone, near the Carib- 

 bean Coast, along the Rio Magdalena and on the Sabana of Bolivar. 

 Ranges from Mexico to Brazil and in the West Indies. 



Antioquia. Brazue'a de Perales (river flat along Rio Magda- 

 lena, alt. 150 m.), Pennell 3698 [corolla blue]. 



Bolivar. Cartagena (moist arroyo, 12 km. s. e. of C, alt. 50-100 

 m.), Pennell 4729 [corolla blue], (open ditch, 14 km. s. e. of C, alt. 

 50-100 m.), Pennell 4730 [corolla lavender]; Since (desiccated pool 

 in prairie, alt. 120-170 m.), Pennell 4047 [corolla lavender]. 



Huila. Quebrada de Angeles, above Natagaima (alt. 450-500 

 m.), Rusby & Pennell 263 [corolla blue]. 



Magdalena. Carpentiera (along Rio Magdalena, alt. 50-60 m.), 

 Rusby & Pennell 28; Mamatoca (open boggy ground, 5 m. s. of M., 

 alt. 30 m.), H. H. Smith 1360 (C, H, U, Y) [corolla pale pink]. 



11. UNANUEA (Ruiz and Pa von.) gen. nov. 

 Unanuca R. & P., (Ic. Fl. Per. Ined.), 



Erect, much-branhed shrubby herbs or low shrubs, at least 8-10 

 dm. tall. Stems 4-angled. Leaves mostly whorled in threes, 

 lanceolate to ovate, acute to acuminate, serrate to dentate, shortly 

 petioled. Pedicels axillary, slender, as long as or longer than the 

 calyces, not bracteolate. Sepals five, uniform, linear to lanceolate, 

 entire. Corolla 9-13 mm. long, tubular-campanulate with spread- 

 ing lobes, the posterior united three fourths length; externally 

 puberulent, within glabrous, purple-blue. Stamens four, didy- 

 namous (the posterior filaments shorter), glabrous, anthers-sacs 

 elliptic, each stalked on a short arm of the connective. Style gla- 

 brous. Stigmas distinct, flattened. Capsule brown, ovate in out- 

 line, acuminate, dehiscent septicidally (even through septum) and 

 slightly also loculicidally; placentae adherent to septum, roughened 

 by funicles. Seeds oblong, minutely roughened-tubercular. 



Differs from Stemodia L., which has corolla-lobes not widely 

 spreading, pubescent or glabrous within on the anterior side, two 

 bracteoles on the pedicel beneath the calyx, and the leaves sessile 

 and clasping; from Lendneria Minod, which are herbs low and 

 spreading, with smaller corollas densely pubescent within over the 

 bases of the posterior lobes and with evidently petioled leaves. 

 Both Stemodia and Lendneria are genera of the Tropical life-zone, 

 while Unanuea is of the Subtropical and Temperate zones. 



Type species, Stemodia suffruticosa H. B. K., of Ecuador. 



