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  Uebelmannia flavispina CACTUS ART
NURSERY

Cultivation and Mail Sale
of Cacti and Succulents.


Ubelmannia flavispina
Although the juveniles are quite different, the adult form is very close in appearance to U. pectinifera.
 

Description: Solitary beautiful globular cactus, having green stems with several ribs and closely-spaced areoles.
Stem: Up to 12 cm wide, 35 cm tall, very woolly in the apex. Plants in this genus always show woodiness in the lower stem as they age.
Ribs: 20 to 29 prominent
Areoles: Close set.
Central spines: 1 to 4 up to long 1.5 cm.
Flowers: Yellow and diurnal in late autumn, or spring.

Remarks: The Uebelmannia flavispina and all the other plants belonging to the Uebelmannia pectinifera complex  are very variable in habitat, it has three recognized subspecies, but a multitude of different forms exist, where each form is linked to others by populations of plants with intermediate characteristics.

  • subsp. pectinifera: It has about 18 ribs and slowly grow up to 50 cm in height. Origin: It comes from the mountains in the higher part of the areal.

  • subsp. flavispina: It has up to 29 ribs and can grow about 35 cm tall. Origin: west of Diamantina.

  • subsp. horrida: Stem with more than 23 ribs (up to 40) it is the taller of the three and can reach 1 m of height. Origin: Serra do Espihašo.

 

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Family: Cactaceae (Cactus Family)

Scientific name:  Uebelmannia flavispina Buining & Brederoo
Place of publication: Succulenta (Netherlands) 52:9. 1973

Origin:   Brazil (Minas Gerais: Diamantina)

Conservation status: Listed in CITES appendix 1.

Etymology:  The subspecies name flavispina comes from the Latin for "yellow spines".

Synonyms:  

  • Uebelmannia pectinifera subsp. flavispina (Buining & Brederoo) P. J. Braun & Esteves
    Place of publication: Succulenta (Netherlands) 74:135. 1995
 





 


Uebelmannia flavispina/pectinifera intermediate.
This specimen shows a  transition from the yellow basal (juvenile) spines to the black ones on the upper part of the plant.

Cultivation: Not easy; it has a large root and lives among rocks. This tropical cactus prefers loves warm, moist, humid conditions, and mist spraying is a must in summer. Water regularly during the growing season and use a very draining mineral potting substrate. At the onset of winter, do not water. Uebelmannias need heat all year round, and extra winter heat; minimum 10░C is best. Avoid any frost. Keep cool in summer. This plant proves to be root prone if kept too cold in winter. To help stop this, a good deep collar of pumice or lava grit is an excellent idea. It prefers a full sun position and possibly afternoon shade in summer. If you can place it so that this occurs, the plant will be much happier.
Propagation:
By seeds. Germinating seeds can also be tricky.  But plants are often grafted making them easier to grow, particularly through the winter. If possible, using a rootstock that is hardier than the Uebelmannia is the ideal.

Photo of conspecific taxa, varieties, forms and cultivars of plants belonging to the Uebelmannia pectinifera complex (This Taxon has lots of synonyms ( like many other cacti) with several controversial varieties and subspecies, and comprises a multitude of different forms, but where each form is linked to others by populations of plants with intermediate characteristics):

Home | E-mail | Plant files | Mail Sale Catalogue | Links | Information | Search

All the information and photos in cactus art files are now available also in the new the Enciclopedia of Cacti. We hope you find this new site informative and useful.