354 Scott Elliot . — On the Fertilisation of South 
Kalanchoe vertieillata, Scott Elliot , ined. 
The flowers are bright scarlet and appear to be pro- 
tandrous. 
Brexia madagascariensis, Lindt. (Figs. 85, 86.) 
The midribs of the petals are much thickened and be- 
tween them lie the rather deep hollows formed by the con- 
cave sepals. Honey is secreted by a yellow thickened patch 
on the lower sides of the filaments near their base and drops 
into these hollows or pockets between the midribs of the 
petals. The filaments and the four-lobed staminodial discs 
between them conceal these pockets, so that they are not 
visible from above. These four-radiate discs or rudimentary 
stamens are yellow and appear to secrete a little honey on 
their upper surfaces near the ovary, so that small insects 
coming to the flower would never suspect the quantity below 
but fly away contented. The stamens twist downwards as 
shown in the figure, but only gradually as they ripen, so that 
the dehiscing face of the anthers is towards the entrance to 
the inferior honey-pockets. The short style ends in a flat 
stigma. Visitors : — The sugarbird Nectarinia souimanga 
sucking honey ! Also by a species of clear-winged moth 
in great abundance and other insects. — Fort Dauphin, also 
Ambahy. 
Montinia acris, Z. 
Honey is secreted in the male flowers by a well-developed 
disc which is accessible to most insects. Visitor : — Allodape , 
sp. (apparently undescribed, No. 139). 
Mesembryanthemum rep tans, Ait. (Fig. Sya.) 
The petals are red and the expanded flower measures 
fully an inch in diameter : the stamens are united at the base 
and form a sort of circular palisade arching inwards over the 
dark-green circular nectary. Insects cannot pass through this 
barrier from the outside, so that they will usually alight either 
on the styles or on the disc, and will probably cause cross- 
fertilisation, though self-fertilisation is quite possible. Visitors : 
