142 PROCEEDING* OF THE ACADEMY OF [May-Oct., 



At the conclusion of the systematic portion of this study there 

 is planned a synopsis of the geographic distribution of the Scrophu- 

 lariaceae of Colombia, and also a series of brief sketches of those 

 collectors in Colombia to whom reference will have been made in 

 the text. 



Key to Axtirrhixoid Scrophulariaceae of Colombia. 1 



Corolla with the posterior lobes external in the bud. 



I AXTIRRHIXOIDEAE.) 



Capsule septicidal, or loculicidal by a~ simple median split, the 

 septum breaking from the capsule-wall or rupturing. Cor- 

 olla not spurred. Leaves opposite or whorled in threes 

 (except in Capraria). 

 Corolla, even if saccate anteriorly, without a horn-like process 

 at the base of the anterior lobes. Capsule septicidal, or 

 loculicidal. Seeds, if reticulate, with lines not raised' or 

 wing-like. 

 Stigma two-lipped. 



Capsule septicidal, or secondarily also somewhat loculicidal, 

 splitting to base; placentae simple. Sepals distinct 

 or nearly so (except in Vandellia and Torenia). Leaves, 

 or rarely only the capsule, somewhat glandular-punc- 

 tate. Inflorescence simply racemose (if several pedi- 

 cels are in one axil, then no common peduncle is 

 evident). Corolla yellow, blue or white. 



I. Gratioleae. 

 Capsule loculicidal (only tardily septicidal if at all), or 

 indehiscent ; placentae branched and widely spreading. 

 Sepals united over one-half length. Leaves and cap- 

 sule not glandular-punctate. Inflorescence racemose, 

 or of axillary cymes a single one of which is terminal 

 to the primary peduncle. Corolla yellow, two-ridged 

 and pubescent within on the anterior side. 



II. Mimuleae. 

 Stigma capitate. 



Corolla conspicuously zygomorphic, the tube scarcely de- 

 veloped and the anterior lobes much exceeding the 

 posterior ones. Capsule without placental hairs, and 

 dehiscing only distally. Seeds ridged, not reticulate. 

 Leaves opposite, or the upper alternate. 

 Stamens four; anther-sacs with membranous walls. Cor- 

 olla orange, flattened, its lobes all evident, the tube 

 split to base between the posterior lobes. Sepals 

 five, less than one-half the length of the capsule. 



l The warning must be given that the keys to tribes and genera are prepared 

 for Colombian species, and contrasts may not hold for extra-limital genera and 

 species. 



