Piate III 
OENOTHERA CRUCIATA. |. Young protuberance. 2. "Stung tip.” 3. Old 
protuberance and bifurcation with one fasciated branch. 4. Protuberances asso- 
ciated with the flattening of the stem. 
5. Protuberance surrounded by fascia- 
tions. 6. Early stage in the formation of a protuberance. 
