(plant with flower and fruit). Hereafter are the main features:
- Bushy, half-bushy or climbing, Mandevilla is a vine that thrives depending on the climat. The branches can be as long as 5 meters.
- When branches become vine, they curle around any kind of support. This behaviour is typical of the Apocynaceae family and the curling generally occurs counter clockwise.
Fruit and seed:
Flower and inflorescence:
- In general Mandevilla leaves are evergreen. They are opposed, sometimes whorled. Elliptical shape, oval or long depending on the species.
- Leaves are simple with whole limbus, acuminate.
- Mandevilla laxa ("Chilian Jasmin") is one of the rare varieties with deciduous leaves.
- Dipladenia inflorescence is a racem with 1 to 10 flowers. It can be axillary, terminal or sub-terminal. It apears only the branch of the year.
- Mandevilla flowers are of various sizes depending on the specy: from 2 cm to 12 cm. They are generally constituted of 5 green sepals and 5 colored petals.These latter are shaped in a tub at the basis.
- Like all Apocynaceae, flowers are actinomorphic, hermaphrodite. Floral formula is: O : (5S) [(5P), 5E] 2C.
- The gyneocum is constituted of 2 free carpels. They join to form a gluy stigmat called "clavoncule". The ovary is superior or sometimes sub-inferior, and the placentation is marginal. The ovules, between 2 to 200 per carpel, are generally anatropous, unitegumented. We can see 2 to 5 nectariferous scales at the basis of the ovary. These "glands" made the name "dipladenia".
- The androcea is constituted of 5 epipetalous and alternisetalous staminas. They join the corolla at the floral tube level. Their anthers joined above the des stigmas to form a complex shape called "gynostegous", "gynostegium" or "gynostemous" depending on the author.
- Sexual organs being specialized, natural pollination mechanism is also specialized making the fruit formation more complicated when it happens under different climat zones than the original one.
- Mandevilla fruit is a double follicle (pod type) dry and dehiscent.
- Seed are small (between 4 and 15 mm) and have hair to facilitate dissemination. They are unitegumented and contain an oily endosperm.
- Mandevilla ambryo is large and straight. It has leafly cotyledons.
- Mandevilla rooting system is principally composed of tuberous roots sensitive to light and air.
- Mandevilla produces latex, mainly toxic like for most Apocynaceae.