1920.] NATURAL SCIENCES OF PHILADELPHIA. 143 



Capsule scarcely dehiscing loculicidally. Seeds 

 blackish. Inflorescence simply racemose. Stem 

 quadrangular. III. Hemimerideae. 



Stamens two; anther-sacs with firm walls. Corolla yel- 

 low, its lips concave-saccate or the posterior much 

 reduced, the individual lobes scarcely or not evi- 

 dent, the tube not split to base between the posterior 

 lobes. Sepals four, at least one-half the length of 

 the capsule. Capsule dehiscing loculicidally as well 

 as septicidally. Seeds brown. Inflorescence cy- 

 mose, two pedicels of each cyme being terminal to 

 the primary peduncle. Stem terete or nearly so. 



IV. Fagelieae. 

 Corolla red, nearly regular, tubular, the short lobes nearly 

 equal. Capsule filled with slender hairs between which 

 are the scattered seeds, dehiscing to base septicidally. 

 , Seeds reticulate, not ridged. Leaves whorled in threes, 

 and the stem with six angles. Inflorescence of axillary 

 cymes, two pedicels of each being terminal to the 

 primary peduncle. V. Russelieae. 



Corolla violet-blue, saccate anteriorly and with a fine horn- 

 like process at the base of the anterior lobes. Capsule 

 locuhcidal, the septum only tardily if at all splitting sagit- 

 tally. Seeds reticulate, the reticular lines raised into 

 wing-like processes. Inflorescence simply racemose. 



VI. Angelonieae. 

 Capsule loculicidal, the septum and adjacent capsule-wall per- 

 sisting, the remaining wall splitting irregularly. Corolla 

 blue, with a spur at the base of the anterior petal. Leaves 

 alternate. VII. Antirrhineae. 



Corolla with the antero-lateral or anterior lobes external in the bud. 



(RHINANTH0IDEAE.2) 

 I. GRATIOLEAE. 



Leaves alternate, serrate. Stamens five. Corolla essentially 



regular, the five lobes equally distinct. 1. Capraria. 

 Leaves opposite or whorled in threes. Stamens four, three or 

 two (the posterior one lost). Corolla more or less zygo- 

 inorphic, the two posterior lobes united over one-half their 

 length. 

 Leaves entire to serrate-dentate. Capsule globose to lanceo- 

 late in outline. Seeds not regularly cylindric nor spirally 

 ridged, disposed in more than one row within each valve 

 of the capsule. 

 Corolla with the ridges to the antero-lateral sinuses, if 

 developed, low and not projecting beyond those points 

 (so anterior filaments simple). Style not with a semi- 

 persistent callose base. Septum rupturing, so that the 



2 To be considered in a second paper. 



