4 
and in this respect, also, I agree with them; but the body which 
all of them describe as a jointed filament, 1 consider to be 
made up of two very distinet parts, the portion below the joint 
being the footstalk of the flower, and that above it the proper 
filament: but as the articulation itself is entirely naked, it follows 
that, there is no perianthium; the filiform or laciniated scales, 
which authors have considered as such, being on this supposi¬ 
tion analogous to bracteæ; The female flower, in conformity 
with this supposition, has also its peduneulus, on the dilated, 
and in few cases obscurely lobed, apex of which the sessile ova¬ 
rium is placed. If this be a correct view of the structure of 
Euphorbia, it may be expected that the true filament, or upper 
joint of what has commonly been called filament, should, as in 
other plants, be produced subsequent to the distinet formation 
of the anthera, which consequently will be found at first sessile 
on the lower joint or peduneule, after that has attained nearly 
its full length; and accordingly this proves to be the case in 
such species as I have examined. Additional probability is given 
to this view by the difference existing between the surfaces of 
the two joints in some species. I consider it, however, as ab- 
solutely proved by an unpublished genus of this order, having 
an involuerum nearly similar to that of Euphorbia, and like it, 
inclosing several fasciculi of monandrous male flowers, surroun- 
ding a single female; but which, both at the joint of the sup- 
posed filament, and at that by which the ovarium is connected 
with its pedicellus, has an obvious perianthium, regularly divided 
into lobes. 
Fire Aar senere findes folgende Udtalelse af ham i Tillæget 
til Tuckeys „Exped ilion to the river Zaire“, hvor han 
opregner de af C hr. Smith samlede Planter (S. 444)^): „The 
most remarkable plants of Euphorbiaceæ in the Congo herbarium 
*) Appendix, Nr. V: »Observations, Systematical and Geographical, on 
Professor Christian Smilh’s Collection of Plants from the Vicinity 
of the River Congo, by Robert Rrown, F. R. S. 
