16] 
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. 
6) 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 6 and c the stamens are either free or cohering 
with a lobe of the corolla. One stamen has a petaloid connective. 
GESNERACEAE. 
Streptocarpus 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 terminates 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 instead of two, another one instead 
ot none. Between these there is a stamen instead of a staminode, 
