228 PROCEEDINGS OF THE ACADEMY OF [DeC, 



Corolla lavender, personate, 20-35 mm. long, pubes- 

 cent within below bases of the anterior lobes; 

 lobes shorter than tube, the two posterior united 

 about three-fourths length. Sepals five, united 

 over one-half length. Lips of stigma distinct. 

 Placentae wide, peltate in cross-section, at- 

 tached by a narrow line to the septum. Leaves 

 all opposite. 4. Mimulus. 



Sepals unequal, all distinct. Pedicels frequently bi- 

 bracteolate. First splitting of capsule septicidal. 



Pedicels bibracteolate at base. Stamens four. Cor- 

 olla pubescent within at base of posterior lobes. 



5. Mecardonia. 

 Pedicels bibracteolate at apex or not at all. 



Erect. Outer sepal not more than twice the width 

 of the innermost. Corolla 8-20 mm. long, 

 with tube much longer than the lobes. Pedi- 

 cels bibracteolate. Postero-lateral stamens 

 fertile, the antero-laterals rudimentary or 

 wanting. 

 Corolla-tube broad, within densely pubescent 

 on the posterior side. Sepals of nearly 

 uniform length. Plants relatively lax or 

 succulent, the leaves and sepals plane. 



6. Gratiola. 

 Corolla-tube very narrow, within uniformly 



short-pubescent on all sides. Sepals very 

 unequal in length. Plant stiff, the leaves 

 and sepals revolute. 7. Sophronanihe. 



Extensively repent. Outer sepal over twice the 

 width of the innermost. Corolla 3-11 mm. 

 long, with tube little longer than the lobes. 

 Stamens four. Corolla 7-11 mm. long. Outer 

 sepal not deeply cordate nor conspicuously 

 reticulate. 

 Corolla glabrous within, the throat yellow, 

 the lobes white; posterior lobes distinct. 

 No hypogynous bristles. Outer sepal 

 oval or ovate, scarcely exceeding the 

 oblong or lanceolate innermost. Capsule 

 over one-half as broad as long. Leaves 

 widening distally, very entire. Pedicels 

 reflexed in fruit. Plants inodorous. 

 Stem pubescent. Leaves spatulate-oval to 

 nearly orbicular, with seven to nine 

 longitudinal nerves. Pedicel not bi- 

 bracteolate. Sepals obtuse, scarcely 

 longer than the rounded capsule. 

 Styles distinct at apex. 



8. Ranapalus. 



