370 Scott Elliot— On the Fertilisation of South 
the lateral margins slightly bulged and these margins are 
completely fitted and covered by the upper lip. The stamens 
lie close together against the upper lip, and the stigma is 
above them. A bee entering must touch the stigma before 
it reaches the anthers. The irritability of the stigma pointed 
out for U. vulgaris by Hildebrand (Muller, No. 356) and Beal 
(Muller, No. 44) is scarcely distinguishable in this species. 
Visited by a small Hymenopteron, Odynerus , sp. ? sucking and 
gathering pollen. 
Colea decora, Boj. (Figs. 109-m.) 
The flowers are an inch long and the corolla is at the 
throat 5 lines broad and only 3 lines deep. The style 
is well in front of the stamens and is additionally protected 
from its own pollen by a distinct upward curvature which in 
the young condition keeps it in contact with the upper part 
of the corolla-tube : if loosened from the corolla in this state, 
it bends back, as shown in the figure, proving that it has a 
distinct tension. The stamens have their filaments slightly 
curved and dehisce upwards. The corolla is white but dark 
red inside except the two longitudinal ridges, seen in section, 
Fig. no, which are bright yellow and are covered with hairs. 
These ridges are due to the arrangement of the petals in bud 
(see Fig. 1 l i). Visitors : — Birds, Nectarinia souimanga is very 
fond of this flower. Also various butterflies and moths (one 
species of clear-winged moth is a very regular visitor) as well 
as Apis mellifica collecting pollen.— Fort Dauphin. 
Rhytiglossa eekloniana, Nees. 
The peculiar twisting of the corolla-tube so that the 
anterior and posterior lips are reversed in position ensures 
that insects will enter above the stamens and style. The 
method of fertilisation is similar to that of Plectranthus. 
The two stamens are at first straight and dehisce upwards : 
after dehiscence they move sideways, and curl themselves 
round the lower lip of the corolla. The style then elongates 
till it occupies their former position and the stigmatic surfaces 
unclose. Visited by numerous Diptera and Hymenoptera. — 
Bedford. 
