Uncarina decaryi
This is a most attractive plant ,but still not very well known.  It is indeed a stunning plant, and probably one of the best examples of the new generation of succulent caudiciforms. This Uncarina blooms easily, and when covered with flowers, it is a striking vision.
 

Description: Deciduous tropical shrub or small caudiciform tree to 7.5 m (but usually less), trunk up to 30 cm in diameter.
Stem: Stout, that becomes thickened with age. Stems may ultimately attain a height of 3 meters. Flowers: The flower resembles a large Petunia in form and is bright yellow with a dark throat.
Leaves: Lobed, finely hairy, soft and sticky to the touch, yielding a musty odor when rubbed. The leaves are deciduous during the winter resting season.
Flowers: Bright yellow flowers with black centers.
Blooming season: Warmer months.
Fruit: The fruit (capsules) has small inwardly pointed barbs looking like small hooked harpoons and are mounted on 2 cm pedicels. Don't touch this fruit unless you want to spend some time trying to remove it from your fingers.

Uncarina decaryi is. similar to U. grandidieri, but with smaller flowers and deeply lobed leaves.
 

Cultivation: They are easy to grow heat resistant plant, which grow better than the average. They do best when grown in part shade to full sun. Their attractiveness is further enhanced because they will flourish very easily in any pseudo-tropical environment. Growing in well-drained soil with lots of water, when in growth and keep dry when dormant. It can tolerate neglect, and as soon as you pay it a little attention (like repotting or fertilizing) it recovers and puts out plentiful new growth. Use diluted fertilizer on young plants to speed up growth.
They are tender, cannot endure temperatures below 2° C, if grown outdoors they will probably grow back from roots, if frozen. They are quite heat tolerant.

Reproduction: Seeds, and it can be reproduced by cuttings as well.

Scientific name:  Uncarina grandidieri (Baill.) Stapf
Engl. and Prantl, Nat. Pflanzenfam. iv. 3b. 261 (1895)

Origin:  Madagascar.

Conservation status: Listed in CITES appendix 2.

Common Names include: Succulent Sesame, Mouse trap tree

Etymology: The species is named in honor of Alfred Grandidier (1836-1921), an intrepid explorer and collector in Madagascar.

• Uncarina grandidieri Ihlenfeldt & Straka 1962
• Harpagophytum grandidieri Baillon 1887
• Uncaria grandidieri Kuntze 1891

Uncarina blooms easily, and when covered with flowers, it is a striking vision.