WAYFARING NOTES FROM THE TRANSVAAL 199 
different a character, the examples sent are more numerous. In 
general one notes the fusion of anthers and stylar head into a column. 
The corpusculum of the translator set between each pair of adjoin- 
ing anthers, joined to the pollinia of adjacent anthers, mostly by 
means of retinacula. Below the translator, in all the species sent, 
lies the slit left between the valve-like sides of adjacent anthers. 
These lateral valve-like projections of the anthers, in some species, 
project ea below, forming a wing or keel, aud then retreat 
more or less suddenly in a horizontal direction back to the column. 
h : ; 
with that of the pollinium to be encountered, and beyond the 
dilatation the valves again approach so as to leave a mere slit, as 
in their upper vertical portions, The result is a split-ring-like 
i in, fi tig 
heir 
sometimes dark-coloured. In No. 862 the inner margin of the lips 
of the slit is beset with fine teeth directed upwards and inwards. 
The anthers are provided, almost universally in the Asclepiadea, 
provide a slippery surface for the insect-foot, which slips and slides 
down from them to be nstet in ae slits between the anther-valves 
below. These membranous tips are not found in the Periplocoidee, 
where the mechanism is felienats to distribution by the head of 
the pete 
1e pollinia vary much in shape and size in ee different species. 
“eels the flattening is so great that the inium has the 
shape of a fly’s wing. Sometimes conty is a keel- Tike process. The 
retinacula vary very much in length and thickness, while in some 
cases the pollinia are practically sessile upon the corpus usculum 
cloudy. As only one of the pair of pollinia can find entrance 
between the valves, the other one st left projecting and is probably 
wasted, breaking away from the imprisoned pollinium and carrying 
it is the product of one anther, and not of two, which fertilizes. 
The corona and its Sonmitiont cuculli ae so greatly in form tha 
it is difficult to find objects with which to compare them. Perhaps 
the t 
-~ growths, its varying thicknesses, and the twists and turns of its 
s and marginal processes. That the cuculli frequently 
Faction as nectaries is obvious, but they frequently form gateways 
the a Behe by apposition of notches in 
or avenues of approach.to the an y 2p a caine cw 
. bar th 
joining cuculli, or by the mut 
processes. Doubtless ities ste tin we e way to un- 
insect-visi In ter st of the fiower the 
welcome itors e later 
cuculli, when long, unusually fold up over the — head. 
