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



placental mass eventually stands free. Pedicels fre- 

 quently bibracteolate. Stem, if quadrangular, with 

 the angles not conspicuously ridged or winged. 

 Anther-sacs proximate, no connective arms developed, 

 Seeds reticulate. Leaves sessile or nearly so. 

 Pedicels bibracteolate. Sepals five. 



Pedicels bibracteolate at base (remote from the 

 calyx). Corolla yellow, pubescent within at 

 base of posterior lobes. Sepals unequal, and 

 leaves serrate. Plant repent-ascending. 



2. Mecardonia. 

 Pedicels bibracteolate at apex (just beneath calyx). 



Corolla violet-blue or white. 

 Filaments four, all with anthers. Bractlets 1 

 mm. or less long, much shorter than the 

 sepals. 

 Sepals unequal, the outer much larger than 

 the narrow innermost. Corolla pubescent 

 within at base of posterior lobes, or gla- 

 brous, violet-blue or white. Capsule glo- 

 bose-ovoid to oblong. Leaves serrate to 

 entire, and stems, erect or ascending. 



3. Caconapea 3 

 Sepals uniform. Corolla pubescent within at 



base of the anterior lobes. Capsule de- 

 pressed-globose. Leaves serrate and stem 

 repent-ascending. 4. Conobea. 



Filaments two, the anterior rudimentary or want- 

 ing. Bractlets 5-10 mm. long, equaling or 

 exceeding the nearly uniform sepals. Cor- 

 olla pubescent at base of the posterior lobes, 

 white or pinkish-tinged. Leaves serrate and 

 stem ascending or erect. 5. Gratiola. 

 Pedicels not bracteolat'e. Sepals four or five. Cor- 

 olla blue or white. 

 Corolla glabrous within. Sepals unequal, the inner- 

 most narrowest. Leaves palmately veined, 

 entire or slightly undulate. Pedicels tending 

 to deflex in fruit. Plants repent. 

 Outermost sepal cordate, much exceeding the 

 linear-attenuate innermost ones; five sepals 

 always present. Capsule oblong or ovoid- 

 oblong, acute, brown, much shorter than the 

 sepals. Styles united to apex. Corolla blue 

 or white. 6. Monocardia. 



3 Branna monnieri (L.) Pennell, a repent herb, with broadly rounded entire 

 leaves, corolla with distinct posterior lobes, and outer sepal scarcely longer than 

 the innermost, is widespread in Tropical America, and must surely o'ccur on moist 

 semi-brackish sands along the Colombian coast. See, Proc. Acad. Nat. ScL, Phila. 

 1919: 243, 1920. 



