This hybrid was created by Jon Lindstrom, professor of horticulture at the University of Arkansas, and his graduate student Bruce Dunn. They grew and photographed the plants.
This is another demonstration that S. piresiana is a good parent for crosses, because the hybrid inherits the markings on the outside of the corolla tube.
It is also noteworthy that the flowers have external silvery hairs. (See the flower picture below.) Not all forms of Sinningia leucotricha have hairy flowers; perhaps Jon's was similar to what Jon Dixon calls the "Max Dekking" form.
The foliage on this cross suggests that crossing two hairy species is a good idea. Here both S. leucotricha and S. piresiana contribute hairiness to the hybrid. Silver hairs x ordinary hairs results in less impressive foliage (see S. leucotricha x cardinalis).
Here we can see the corolla streaks from the S. piresiana parent. They are somewhat hidden by the silver hairs. The markings on the corolla lobes are not obscured by hairs and are very dramatic.
|Growth||Determinate, like both parents|
|Habit||Stems upright with (it appears) 2 leaf pairs|
|Leaves||Green, with silvery hairs, like both parents|
|Dormancy||Since both parents have obligate dormancy, one would expect it of the hybrid too.|
|Inflorescence||terminal cluster like both parents.|
|Flower||Hairy, tubular. Color appears similar to that of S. piresiana.|
|Fertility||There is no reason to believe this hybrid is not fertile.|
|Taxonomic group||Both parents are in the Dircaea clade.|
Like the above cross, this hybrid was also created by Jon Lindstrom and Bruce Dunn. Comparing the two is instructive.
|Characteristics of S. piresiana hybrids|
|Other parent||Leaf description||Growth habit||Exterior of corolla||Corolla lobes|
|S. leucotricha||Covered with silvery hairs||Determinate, like both parents||Piresiana-type color and streaks||Piresiana-type markings|
|S. insularis||Normal sinningia-type hairiness||Determinate, like both parents||Piresiana-type color and streaks||Piresiana-type markings|
|S. 'Peninsula Belle'||Normal sinningia-type hairiness||Indeterminate, like 'Peninsula Belle' parent||Piresiana-type color and streaks||Markings like one or both parents|
From this we can hypothesize that piresiana's corolla marking patterns are dominant, that the indeterminate habit is dominant in sinningias, and that the presence of silvery hairs on sinningia leaves has a more complicated inheritance system than just dominance (yes/no) or addition (both parents contribute).