a new Pitcher-plant from British Guiana. 433 



raceraosus, glaber. Pedicelli alternij glabri, solitarii ad axillam bracteae 

 ovatse complicatse acuminatse paralleli-venosae glabrae. Prope basin scapi 

 folium nonnunqu^in adest forma inter illas foliorum radicalium et brac- 

 tearum fer^ media, nemp^ basi bracteis simile supra medium margini- 

 bus connatis subamphorae-forme. Flores nutantes, albi, v. pallid^ rosei. 

 Perigonii foliola expansa, ovato-lanceolata, acuminata, glabra, 15-16 lin. 

 longa. Stamina glabra, filamentis basi crassioribus. Ovarium ovoideum, 

 pubesoens. Stylus glaber. 



EXPLANATION OF TAB. XXIX. 



Helfamphora nutans. 



Fig. 1. The flower, with the perigon removed, showing the stamens. 



2. A single stamen, front view, 



3. The same, back view. 



4. Style and ovary. 



5. Transverse section of the ovary. 



6. Diagram of the arrangement of the floral parts. 



7. Seed. 



8. The same, with the testa removed. 



9. Longitudinal section of the same. 



10. Portion of a young petiole, showing the inner surface of the natural 

 size. a. Hairs of the orifice, highly magnified, b. Hairsof the bot- 

 tom of the pitcher, magnified to the same degree. 



Nos, 1. to 9. are all more or less magnified. 



3 l2 



