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



side and lined with violet, the posterior lobes united nearly to 

 apex. 

 Corolla 7 mm. long, pubescent within. Anthers all uniform. 

 Sepals strongly dissimilar, the outer ovate, all puberulent. 

 Capsule septicidal, with thick protuberant placentae, in de- 

 hiscence portions of the septum remain adhering t3 the walls. 

 Seeds conspicuously reticulate. Leaves lanceolate-elliptic, 

 crenate-serrate. Stem sharply quadrangular, 1-3 dm. tall. 



1. C. auriculata. 

 Corolla 5 mm. long, puberulent within. Anthers of posterior 

 filaments larger. Sepals slightly dissimilar, the outer lanceo- 

 late, all somewhat pubescent. Capsule loculicidal, with thin 

 placentae, placed along median line of the septum which 

 ultimately breaks free from the lateral walls. Seeds finely 

 reticulate. Leaves linear, entire. Stem obscurely quad- 

 rangular, .3-.5 dm. tall. 2. C. debilis. 

 Pedicels less than 2 mm. long, usually several to an axil. Corolla 

 2-3 mm. long, glabrous within; lobes white or violet, throat 

 white and without lines. Placentae thin, attached to median 

 line of septum. Seeds finely reticulate. 

 Leaves tapering to the narrow base. Stem pilose with spreading 



white hairs. 3. C. axillaris. 



Leaves rounded-clasping at base. Stem appressed-pubescent or 

 glandular-dotted. 

 Corolla deciduous, white throughout, its posterior lobes united 

 nearly to apex. Exterior sepals rounded, all glabrous or 

 obscurely puberulent. Stem whitish with appressed re- 

 flexed hairs. 4. C. appressa. 



Corolla persistent, lobes violet-blue, its posterior lobes united 

 only three -fifths length. All sepals acute, each with a 

 tuft of white hairs at apex. Stem yellowish with sessile 

 glands. 5. C. conferta. 



1. Caconapea auriculata (Rob.) Pennell, comb. nov. 



Herpestis auriculata Rob. in Proc. Am. Acad. 26: 172. 1891. "Wet places 

 near Guadalajara [Mexico]; November, 1889 [C. G. Pringle] (n. 2937)." 

 Later collections of Pringle from near Guadalajara, 4623 and 6148, seen 

 in herbarium of Columbia University at The New York Botanical Garden. 



Bacopa auriculata (Rob.) Greenm. in Field Col. Mus., Bot. Ser. 2: 262. 

 1897. 



Stem 1-3 dm. tall, sharply four-angled, glabrous to slightly puberu- 

 lent above. Leaves 1-1.7 cm. long, .5-. 8 cm. wide, oblong-lanceo- 

 late, crenate, often dentate at and near base, obtuse, rounded-clasp- 

 ing at base; glabrous or glabrate. Pedicels solitary, 5-10 mm. long, 

 puberulent. Bractlets linear-subulate, less than 1 mm. long. 

 Sepals obscurely puberulent: outermost 4 mm. long, ovate, obtuse 

 to acute, obscurely veined; two median slightly shorter and more 

 narrowly ovate; two innermost 3 mm. long, linear-attenuate, 



