African and Madagascar Flowering Plants. 339 
claws ; whilst doing so it must be covered with pollen from the 
extrorse stamens. Visitors: — Hymenoptera : Apis mellifica , 
ab., also a small bee. — King William’s Town. 
Pelargonium Eekloni, Haw. 
The white or flesh-coloured flowers of this species are 
very conspicuous, as they are placed on a leafless peduncle 
nearly two feet high ! There are seven stamens gradually 
increasing in length from above downwards ; the lateral and 
inferior stamens are also twisted in such a way that their 
anthers dehisce upwards, forming a flat pollen-covered surface 
which must be touched by the abdomen of an insect visiting 
the flowers. The stamens are protandrous, and when the 
anthers have fallen off, the five stigmas ripen and spread out 
in a starlike manner, the three upper style-branches being more 
curved back than the two lower, so that the stigmata occupy 
exactly the place formerly taken by the dehiscing anthers. 
The honey-canal is if inch long. Visitors : — Probably night- 
flying moths. I found one Hymenopterous insect (No. 334) 
stealing honey by biting a hole above the canal. — Pretoria. 
Pelargonium betulinum, Ait. 
Agrees generally with above species, but the filaments of 
the five upper stamens are connate for one to two lines. 
Honey canal about f of an inch long. 
Pelargonium hirtum, Jacq. 
Similar to preceding species, but with a honey-canal fully 
fifteen lines long. (On Pelargonium cf. Muller No. 198, 
which I have not seen.) 
Oxalis. 
All the species which I gathered at the Cape were tri- 
morphic, and displayed a very peculiar difference in the 
relative number of the different forms. For instance, in Oxalis 
variabilis , Lindl., I found twenty-three long-styled, twenty- 
seven intermediate, and fifty short-styled forms as the usual 
proportion in one locality. In Oxalis versicolor , L., on the 
other hand, the long-styled forms were the most common, the 
