Aeonium arboreum was created in 1840.
Aeonium undulatum was created in 1841.
Aeonium ciliatum was created in 1841.
Aeonium canariense was created in 1841.
Aeonium hierrense was created in 1899.
Aeonium cuneatum was created in 1841.
An aeonium is a member of the genus Aeonium of succulent, subtropical plants with rosette leaves on a basal stem, which are mostly native to the Canary Islands.
Rhododendron Arboreum
The national flower of Tibet is the Rhododendron Arboreum (Lali Gurans)
Oxydendron arboreum it is a native of South east North America.
Winkworth Arboreum is located at Hanscombe Road, Godalming, Surrey, United Kingdom. It is owned by the National Trust, and features many exotic trees.
Apparently, there are several kinds of cotton, including -- according to Wikipedia: **Gossypium hirsutum **Gossypium barbadense **Gossypium arboreum **Gossypium herbaceum **Organic cotton
There is no such Latin word as arbora. You may be thinking of arbor, which means "tree".