1920.] NATURAL SCIENCES OF PHILADELPHIA. 149 



1. Mecardonia procumbens (Mill.) Small. 



Erinus procumbens Mill., Gard. Diet. ed. VIII. n. 6. 1768. "Houst. 



MSS." 

 Herpestis caprarioides H. B. K., Nov. Gen. et Sp. 2: 368. 1818. "Crescit 



locis arenosis, siccis Regni Novo-Granatensis in ripa fluminis Magdalenae 



juxta El Pefion [Humboldt & Bonpland]." 

 Monniera procumbens (Mill.) Kuntze, Rev. Gen. 463. 1891. 

 Mecardonia procumbens (Mill.) Small, Fl. S. E. Un. St. 1065. 1338. 1903. 

 Bacopa procumbens (Mill.) Greenm. in Field Col. Mus., Bot. Ser. 2: 261. 



1907. 

 Herpestis procumbens (Mill.) Urb., Symb. Bot. 4: 558. 1911. 



Moist open soil, along streams in loam or sand, at altitudes below 

 1200 meters. Tropical zone, doubtless throughout lowland Colom- 

 bia, largely as a weed. Also in the Sabana of Bogota, at an altitude 

 of 2600 meters, probably introduced. Widespread throughout 

 Tropical America. 



Antioquia. Opposite Boca Carare (forest along R. Magdalena, 

 alt. 125 m.), Pennell 3829. 



Bolivar. Boca Verde on Rio Sinu (field along river, alt. 100-200 

 m.), Pennell 4568; Canabetal (sand along river, alt. 90-100 m.), 

 Pennell 3874; Sincelejo (thicket, alt. 150-200 m.), Pennell 4068. 



Caldas. Buena Vista (moist open sand, alt. 170-180 m.), Rusby 

 & Pennell 63. 



Cundinamarca. Bogota (desiccated soil in meadow, alt. 2600 

 in.), Pennell 1909 [small-leaved form which has been described as 

 Herpestis chamaedryoides H. B. K.]; Icononzo (loam slope, alt. 900- 

 1000 m.), Pennell 2777. 



Huila. Natagaima (soil frequently overflowed by river, alt. 400 - 

 450 m.), Rusby & Pennell 1182; Quebrada de Angeles above Nata- 

 gaima (gravel, alt. 450-600 m.), Rusby & Pennell 286. 



Magdalena. Masinga (damp clearings, alt. 90-750 m.), H. H. 

 Smith 1326 (Y), Agua Dulce, H. H. Smith 1326 (Y). 



Meta. Villavicencio (moist meadow along Rio Guatiquia, (alt. 

 500 m.), Pennell 1556. 



Tolima. Honda (moist sandy field, alt. 250-300 m.), Pennell 

 3620; Libano (field on "La Trinidad," alt. 900-1200 m.), Pennell 

 3368. 



Valle. La Paila, I. F. Holton 579 (Y). 



3. CACONAPEA Chamisso. 

 Caconapea Cham, in Linnaea 8: 28. 1833. 

 Type species C. gratioloides Cham., of Brazil. 

 Pedicels 5-10 mm. long, one to an axil. Corolla 5-7 mm. long, 

 pubescent or puberulent within over base of posterior lobes; 

 lobes violet, throat yellow within, especially on the anterior 



