Grimes, Mimosoid legumes 
741 
or eighth plastochron, and during this time the axillary bud develops into a short- 
shoot consisting of reduced leaves and suppressed internodes (Fig. 10b). 
The buds of the vegetative and reproductive metamers are the same in appearance. 
Those on the vegetative metamer will uncommonly develop into a long-shoot branch. 
Pithecellobiiim duke exhibits late-suppressed hysteranthy (Grimes 1992), so leaf formation 
is suppressed (delayed) at all nodes forming unit-inflorescences. Unit-inflorescences 
develop in the axils of the leaf-primordia which make up the bud-complex, with two 
to several unit-inflorescences developing sequentially (not simultaneously) at each 
node. Often on reproductive metamers one of the buds will develop into a branch, but 
all the leaves are suppressed, and unit-inflorescences form at each node. These branches 
usually persist and become leafy, though on the specimen observed they never formed 
a major branch. Proleptically formed branches follow the same pattern of vegetative 
and reproductive metamers as the orthotropic branch. 
Fig. 7. Diagrammatic representation of the growth of Ebenopsis ebano. The black half-circles 
represent short-shoots. 
