TERATOLOGY OF SCROPHULARIA CALIFORNICA. 125 



Variation 6. — Middle lobe of lower lip largest, erect, the upper 

 two spreading; sterile stamen, on upper side 

 almost obsolete. 



Variation 7. — Sterile filament well developed and with rather 

 conspicuous free lanceolate apex. 



Variation 8. — Ovary abnormal with two dilated lobes spreading 

 from the top like mules' ears. Similar to Fig. 

 5, t, but far more pronounced. 



Variation 9. — Ovary with truncate apex ; style tubular, cleft at 

 top into two lanceolate lobes. 



Variation 10. — Fruit obovate, and didymous. The didymous char- 

 acter is caused by the growth of the little leaves 

 (replacing the ovules), which growth is subse- 

 quent to the maturing of the pericarp. The 

 lines of union of the carpels do not yield, how- 

 ever, although the sides of the " capsule " do, 

 which thus results in the didymous form, which 

 is very common. 



Variation 11. — Placentae elongated, distinct, and branch-like, fasci- 

 ated, each slightly branched at apex and leaf- 

 bearing; 2 valves of capsule replaced by ovate 

 acuminate green leaves with more or less serrate 

 margin. 



Variation 12. — Pericarp open at top; placentiferous axis branch- 

 ing, each branch becoming fasciated and crowded 

 with the small leaves. 



Variation 13. — Placentiferous axis branching above the middle, 

 bearing toward the base of each branch a folia- 

 ceous carpel, above fasciated and bearing leaves. 



Variation 14. — Ovary replaced by a pair of lanceolate leaves, con- 

 nate at base. Of frequent occurrence. Fig. 4, 

 a, shows a similar case. 



Variation 15. — Ovary entirely replaced by a leafy shoot. Of 

 frequent occurrence. 

 It is easy to propound the question; What is the significance of 



these forms? As to tlie answer only a partial one may, at the 



present time, be had. It would be possible to say that the chori- 



sepalous calyx and the regular corolla are reversions since on general 



