352 ALLAX HAXCOCK PACIFIC EXPEDITION'S VOL. 12 



PLATE 18 



Fig. 1. Di'smarcstia tropica. Habit of the major portion of a 

 young but well-developed plant including the inconspic- 

 uous base, the upper part of the main axis and most of 

 the central branch tips cut off, but showing the char- 

 acters of the branching of the main and lateral axes 

 and, near the lateral margins of the plate, the branch 

 tips. I. Santa Maria, x 0.4. 



