218 The Ohio Journal of Science [Vol. XXI, No. 7, 



monly with vestiges of the missing ones, didynamous or nearly 

 equal; anthers with four microsporangia, sometimes con- 

 fluent. Gynecium with two united carpels ;■ ovulary usually 

 bilocular; ovules mostly numerous, rarely few, borne on axile 

 placentae; style simple, stigma two-lobed; fruit mostly a 

 septicidal or loculicidal capsule; seeds usually numerous and 

 small, the testa reticulate, pitted, striate, ribbed, or nearly 

 smooth. 



SYNOPSIS OF THE GENERA. 



I. Stamens .5, (ours) all with fertile anthers; corolla more or less rotate; 

 upper lip of corolla covering the lower in the bud; leaves alternate. 



VERBASCAT^. 

 Verba scE^. 



1. Verbascum. 

 II. Stamens 4 or 2, with fertile anthers, the fifth and sometimes the two 

 lateral ones sterile or reduced to mere vestiges, or sometimes entirely 

 absent; corolla usually tubular, sometimes more or less rotate. 

 A. Capsule opening by valves, either loculicidal or septicidal; cor.dla 

 not spurred, sometimes gibbous or saccate, corolla usuallj^ with- 

 out a palate in the throat, not with 2 sack-like lips. 



1. Upper lip or lobe of the corolla usuallv covering the lower in 



the bud; capsule usually septicidal.' SCROPHULARIAT^. 



a. Fifth or sterile filament present, sometimes longer than 



the fertile, sometimes gland-like or scale-like; herbs; 

 inflorescence usually compound, cymose, or if single, 

 the peduncle mostly 2-bracteate. Chelone^. 

 2. Penstemon. 3. Chelone. 4. Scrophidaria. 5. Collinsia. 



b. Fifth stamen absent; trees with opposite leaves; 



inflorescence large panicle. Paulownie^. 



6. Paulownia. 



c. Fifth stamen vestigial, small; herbs; flowers solitary in 



axils of bracts or leaves. 



(a). Stamens 4, all anther-bearing and similar. 



MlMULE.-E. 



7. Mimidus. S. Conobea. 

 (b). Anther-bearing stamens 2, sometimes 2 addi- 

 tional filaments present. Gratiole^. 



9. Gratiola. 10. Ilysanthes. 



2. Under lip or the lateral lobes of the corolla enfolding the 



upper in the bud; capsule commonlv loculicidal. 



RHINANTHAT^. 

 (1). Fertile stamens 4 or 2, not didynamous, or if so, their 

 anthers not enclosed by the upper lip. 

 a. Stamicns 4, all anther-bearing; corolla cam- 

 panulate, salverform, or funnclform, scarcely 

 2-lipped. 



(a). Ours with the leaves alternate; cavities 

 of the anthers finally confluent at the 

 top; not parasitic. Digitale^. 



11. Digitalis. 

 (b). Ours with the leaves, at least the lower, 

 opposite; cavities of the anthers con- 

 tinuously distinct; plants commonly 

 more or less parasitic. BucHNERE.^i. 

 12. Afzelia. 13. Dasystoma. 14. Agalinis. 

 15. Otophylla. 16. Buchnera. 



