ments; sometimes indications of small transversal furrows. 
Magnitudo pollinis: media (28-33 »). 
Magnitudo luminum: meso-macra (2-4.7 #) and smaller. 
Index pollinis; subsphaeroidea (1-1.12); (‘prolate sphaeroidal’ of 
Erdtman). 
Index areae poli: middle (0.30-0.35). 
Index exinae: middle (0.05-0.08). 
Van der Hammen further reports that Theobroma, 
Guazuma, Sterculia and Herrania have tricolporate and 
reticulate pollen-grains, but that the grains of Waltheria 
and Helicteres are of different types. A comparison of 
the four genera which have tricolporate and reticulate 
grains leads to the really unexpected conclusion that, in- 
sofar as pollen morphology is concerned, there is no evi- 
dence that Herrania and Theobroma are very close allies. 
On the contrary, the pollen-grains of Theobroma resem- 
ble those of Guwazuma rather than those of Herrania. 
He compares the grains of Theobroma Cacao L. and of 
Herrania tomentella as follows: ‘*The grains of Theo- 
broma Cacao are subsphaeroidal (‘oblate sphaeroidal’ of 
Krdtman); index pollinis 0.8-0.9; magnitudo pollinis = 
22 w. The polar area is relatively much larger than in 
those of Herrania, the colpae are very narrow, unclear 
and short. Pores are small and not very clear; lumina of 
ret much smaller than in those of Herrania (greatest size 
measured 1-1.75 ), and more regular. Exine (including 
sculpture) relatively thicker than in those of Herrania.” 
This evidence of relationship drawn from a study of 
pollen-grains should be of interest, inasmuch as there has 
been a strong tendency in the past to treat the species 
of Herrania as constituting a section of Theobroma. 
The following notes comprise the description of an 
hitherto unknown species, reports of new range exten- 
sions for several species and miscellaneous information 
resulting from the collection of more complete material 
of several concepts. 
(206 J 
