161 



Several degrees of dialysis of the corolla: 



a) Corolla unilaterally split up more than midway downwards, 

 so as to set one of the stamens almost free. 



b) Corolla split up in three spots beyond midway. 



c) Two petals almost free, of the three others one is for 

 more than halfway separated from its neighbours. 



In the flowers b and c the stamens are either free or cohering 

 with a lobe of the corolla. One stamen has a petaloid connective. 



GESNERACEAE. 



Sti^eptocarpus Rexii Lndl. 



Habitat South Africa. 



Coll. Dec. 1894, Jan. 1895, Febr. 1895. 



Of this plant so remarkable on account of its deviating 

 phenomena of germination and the torsion of its fruits {strep- 

 tocarpus = twining fruit) we have in our paper of 1895 gone 

 through a number of variations in which the beautiful flowers 

 abound. 



In order to make the following better understood we repeat 

 the chief characteristics of the flowers: the normal flower 

 consists of a long tube widening upwards with a 5-lobed limb, 

 two lobes are turned upwards, three downwards; the colour is 

 a light violet-blue, the middle one of the three inferior lobes 

 marked with three, the lateral lobes with two stripes each ; 

 with these three lobes two normal stamens alternate, the three 

 other stamens only consist of a stalked small bud of the shape 

 of a pin's head. The style termmates in a two-lobed stigma 

 and is only rarely disturbed. 



1. Synanthy. The stalk which is rather flat bears at the top 

 two flowers on long peduncles which have quite coalesced and 

 only show two furrows indicating the double structure. The 

 flowers are pentamerous, one of the sepals of flower II being 

 interposed between two sepals of I. The corollas are quite 

 independant of one another. The corolla of I is 5-lobed, one 

 of the petals has 3 stripes iostead of two, another one instead 

 ot none. Between these there is a stamen instead of a staminode, 



