UKPORT FOR IQ02. 
47 
spicuous male flowers would be found growing by themselves, and 
other plants bearing conspicuous female flowers grew by themselves; 
but a little examination disclosed the fact that the other sex was 
present, though in much less proportion. The great mass of the 
plants bore the male flowers in profusion on the upper portion of the 
flowering spike, while the female flowers were below in greatly reduced 
numbers. As a rule the St. Anne’s plants show a tendency to 
produce antheriferous flowers only, but occasional patches occur in 
which all the flowers of the spike are pistilliferous, no staminiferous 
flowers occurring upon them ; the accompanying Plate IV. is photo- 
graphed from a sheet of herbarium specimens in which the free 
portions of the spikes contain staminiferous flowers with very few 
pistilliferous flowers below ; while Plate V. represents two similar 
examples of plants upon which there are no staminiferous flowers — 
these pistilliferous spikes forming less than one per cent of the 
whole. Examples of both forms are now sent out to the members of 
the Botanical Exchange Club. The original specimens are two and 
a half times the size represented on these plates. 
Ambrosia artemisiafolia grows at St. Anne’s in patches several 
yards in diameter, and it monopolises the rough portions of the 
hollows of the sandhills, almost to the exclusion of the native 
vegetation in the midst of which it occurs. Although the American 
‘ Floras ’ describe this plant as an annual, it is only the aerial shoots 
which die down before winter ; but there is an underground portion 
which ensures that new plants shall spring up the following summer, 
even if mature seeds be not produced. While the species may have 
originally started at St. Anne’s from the germination and growth of a 
few mature fruits brought to the locality by some unknown agency, 
the subsequent growths would seem to be the product of the slender 
stolons which proceed from the roots. These thread-like processes 
start at right angles from the thick portion of the root, and proceed in 
straight lines ; they are of extreme length, many being over four feet 
long. These hair-like stolons give off, at intervals of every few inches, 
upright shoots which make their way to the surface as young stems, 
and ultimately grow into separate plants. These processes are 
well shown in the four or five lines from the lowermost of the three 
plants shown on Plate IV, ; while the left-hand example of Plate V. 
shows them at a later stage when they have become stouter, and 
where four or five shoots are seen rising at right angles from the 
stolon ; the right-hand example on Plate V. has no connection with 
this stolon, the plant being laid over it to fix it to the sheet. This 
account of its mode of growth explains the circumstance of its 
gregariousness, and it is also an index of the persistence of the plant 
in its present locality. It must have been established for several 
years to account for the size of the patches, and it is surprising that it 
has not been detected and described earlier. As far as my observa- 
tion has gone the species is confined to that portion of the sandhills 
which lies off the South Drive both to the north and to the south of 
