— Plate 4. — 



Fig. I. — Darlingtonia calif ornica, as seen growing 25 miles east of Cres- 

 cent City, Calif. 



Fig. 2. — The same, in flower in early spring (Photograph by Dr. Frank 

 Morton Jones, taken in Plumas Co., Calif., 1920). 



Fig. 3. — The same, flowers (near Florence, Oregon). 



Fig. 4. — The same. View looking up into the dome of the leaf. 



Fig. 5. — The same. A leaf split lengthwise. 



Fig. 6. — Nepenthes Mastersiana. A pitcher split lengthwise, showing the 

 waxy zone above and the glandular zone below. 



Fig. 7. — N. ventricosa. 



Fig. 8. — N. Balfouriana (N. mixta x Mastersiana). 



Fig. 9. — • N. ampidlaria. 



Fig. 10. — N. bicalcarata. 



Fig. II. — N. ampullar ia, looking into a pitcher. 



