1919.] NATURAL SCIENCES OF PHILADELPHIA. 227 



Corolla saccate anteriorly, and with a fine horn at the base 

 of the anterior lobes. Leaves opposite. 



VI. AngelonietE. 

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

 sisting, the remaining wall splitting irregularly. Corolla 

 with a spur at the base of the anterior petal. Leaves al- 

 ternate. VII. Antirrhine^. 

 Corolla with the anterior lobes external in the bud. Herbs. 



(RHINANTHOIDEiE.) 

 Stamens two, the postero-laterals present, the antero-laterals 

 completely lost. Antero-lateral lobes of corolla external in 

 bud. Not parasitic. Sepals four, the posterior lost. Pos- 

 terior lobes of corolla completely united. 



VIII. Veronice^. 

 Stamens four, didynamous, the antero-laterals usually slightly 

 the longer. Usually, perhaps always, parasitic on the roots 

 of other plants. 

 Sepals five, alike, more or less united. Corolla-lobes all some- 

 what distinct, the two posterior spreading or broadly 

 arched; anterior lobe external in the bud. 



IX. Buchnere^. 

 Posterior sepal shorter or wanting. Corolla decidedly two- 

 lipped, the posterior lobes united and arched nearly to 

 apex, the anterior lobes usually shorter; anterior or one 

 antero-lateral lobe external in the bud. 



X. Rhinanthe^. 



I. PAULO WNIE.^ 1. Paulownia. 



II. GRATIOLE.E. 



Leaves alternate. Stamens five. Corolla essentially regular. 



Pedicel not bibracteolate. 2. Capraria. 



Leaves opposite. Stamens four or two (the posterior stamen 

 lost). Corolla more or less zygomorphic. 

 Leaves entire to serrate. Seeds brown or yellow. 



Seeds reticulate. Corolla with the ridges to the antero- 

 lateral sinuses low and not projecting beyond those 

 points (so anterior filaments simple). Posterior lobes 

 of the corolla little, if at all, shorter than the anterior. 

 Leaves uniform. Capsule longer than wide, acute or 

 obtuse, its dehiscence septicidal, or septicidal plus 

 locuHcidal. 

 Sepals all alike. Pedicels never bibracteolate. Sta- 

 mens four. First splitting of capsule loculicidal. 

 Corolla white, rotate, 3-5 mm. long, densely hirsute 

 within over bases of all lobes; lobes longer than 

 tube, the two posterior united throughout. 

 Sepals four, distinct. Lips of stigma united, 

 but line of union stigmatic. Placentae fused 

 with septum. Upper leaves alternate. 



3. Scoparia. 



