Trochodendron aralioides

Source: Wikipedia, the free encyclopedia.

Trochodendron aralioides
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Trochodendrales
Family: Trochodendraceae
Genus: Trochodendron
Species:
T. aralioides
Binomial name
Trochodendron aralioides

Trochodendron aralioides, sometimes colloquially called wheel tree, is a flowering plant and the sole living species in the genus Trochodendron, which also includes several extinct species. It was also often considered the sole species in the family Trochodendraceae, though botanists now include the distinct genus Tetracentron in the same family. T. aralioides is native to Japan, southern Korea and Taiwan. Growing in lower temperate montane mixed forests in Japan, and broad-leaved evergreen forest in the central mountain ranges and Northern parts of Taiwan.[1]

Description

It is an

carpels. The fruit is 2 cm diameter, woody, star-shaped, composed of 4–11 follicles, each follicle containing several seeds
.

Genetics

Trochodendron aralioides shares with Tetracentron the very unusual feature in

eudicots), suggesting the absence of vessel elements is a secondarily evolved character, not a primitive one.[3]

From sequencing the chromosome scale (19 chromosomes and 1.614 Gb in size) genome of the species it was seen that the divergence time between T. aralioides and its common ancestor with the core eudicots was ~124.2 Mya.[4]

References

External links