Sinningia sp. "Itaguassu"

So far I have only young seedlings of this new species.  For flower pictures, see the page on Mauro Peixoto's Brazil Plants web site, via the link below.

Mauro's pictures show a plant with a long peduncle like that of Sinningia aghensis.  The corolla is about the same shape but is orange-red on the lobes and greenish-yellow on the inside.  The leafbacks have the same prominent venation and maroon color as those of S. aghensis too.

Sinningia sp. "Itaguassu"

Location, Pronunciation, and Etymology

Itaguassu is an English-spelling rendering of the Brazilian placename Itaguaçu.  According to the English-language Wikipedia stub page, it is a municipality in the state of Espírito Santo, along the Atlantic coast.

More information is available on the Portuguese-language Wikipedia page for Itaguaçu.  This has a map showing the location.

Based on the Brazilian Portuguese spelling, stress should fall on the final syllable: Ee-ta-gwa-SUE.  According to the Wikipedia entry, the name derives from the Tupí language: itá (rock) + guassú (big).

Seedlings

The seedlings bear a strong resemblance to those of S. aghensis.  Compare that picture to this one.

This picture was taken 16 March 2011.  Older seedlings are shown below.

 
Sinningia sp. "Itaguassu"

A seedling of this species grows quite slowly at first.  This appears to be a result of the plant's putting most of its effort into growing its tuber.

This picture shows the intense red leafbacks of the seedling.  It also shows the tuber, which is quite large for the size of the plant.  My guess is that 90% of the mass of this plant is in the tuber.

The early growth of this species and the dark coloration on the upper leaf surface strongly resemble the corresponding characteristics of Sinningia aghensis.

Mauro's site describes the degree of difficulty of this plant as "medium".  Since this is the same degree of difficulty he assigns to the doomed Sinningia canastrensis, one fears the worst.



 
Sinningia sp. "Itaguassu"

This picture was taken on 20 September 2011.  The plant is in a 3.5-inch pot.

The resemblance to Sinningia aghensis is very striking at this stage.

Sinningia sp. "Itaguassu"

This picture shows a different seedling.  It was also taken on 20 September 2011.  The plant is in a 2.5-inch pot.

This plant has an elongated wiry stem which eventually bears large dark leaves.  At the time of the picture, leaf length was about 8 cm [3 inches].



Feature table for Sinningia sp. "Itaguassu"

Plant Description

Growth Indeterminate.
Habit When juvenile, low herb with compressed stems.  When older, tall plant with elongated stems.
Leaves Very dark green when young.  Backs maroon with heavily patterned venation when older.
Dormancy Plant has a tuber.

Flowering

Inflorescence Tall axillary cyme.
Season ?
Flower Bell-shaped.  See link to Mauro's site.

Horticultural aspects

Hardiness I have no data yet.
Culture Appears to appreciate high humidity.  Seedlings grow very slowly.

Botany

Taxonomic group Probably in the aghensis group of the Corytholoma clade.

External link

Mauro Peixoto's Brazil Plants web site has a page on this plant.