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AMERICAN JOURNAL OF BOTANY 
[Vol. 9 
Caracasia, - Souroubea, and Norantea, there is a nectariferous bract for 
every flower; whereas in the pendent, more or less compacted, umbelliform 
racemes of Marcgravia, the nectaries are segregated at, and apparently 
Fig. 2. Marcgravia cuyuniensis spec. nov. Mature inflorescence. One fertile pedicel 
removed from in front to show attachment of nectaries. From a field sketch by Miss Anna 
H. Taylor. X i/i. 
arise from, the terminal portion of the peduncle, which usually is devoid 
of fertile pedicels (text figs. 2, 4). These nectariferous bracts are not 
exact morphological equivalents of those which occur in the other genera, 
for they bear rudimentary flower buds at their apices (text figs. 3, 5). 
That the nectaries of Marcgravia are not abnormal pedicels, as maintained 
