Dendroseris litoralis


Dendroseris litoralis, the cabbage tree, is a small, evergreen tree species belonging the daisy and sunflower family, with younger trunks ringed with pale leaf scars and distinctive rubbery, leathery leaves up to long. It is found only on the Juan Fernández Islands, west of Chile, and threatened by habitat loss. Native only to tiny, volcanic Robinson Crusoe Island, one of the Juan Fernández Islands in the southeast Pacific, far off the coast of Chile, and home of the famed Juania australis and many other fascinating endemic plants, this strange, small tree has literally been brought back from the brink of extinction. It had been reduced to only a few individuals by feral goats on the island and is still considered critically endangered. It grows into a small, gnarled tree with several somewhat palm-like crowns of very large, ovate leaves on whitish, green-spotted leaf stalks and pendent inflorescences of bright orange, tassel-like 'flowers'. It is easy to cultivate and enjoys a cool, humid climate. It is hardy to light freezes and coastal conditions.

Etymology

The generic name Dendroseris is a compound of the Greek elements δενδρον 'tree'
and σέρις, meaning originally a type of endive and later, by extension, any type of potherb. The meaning is thus very close in sense to that of the English common name Cabbage Tree. The Latin specific name 'litoralis' signifies 'growing by the seashore'. The binomial, in its entirety, thus means 'the tree-cabbage that grows by the seashore'.
Endives belong to the same tribe of the daisy family Asteraceae as the genus Dendroseris.

Edibility

The very large leaves are edible and formed part of the diet of voluntary castaway Alexander Selkirk - possible inspiration for Daniel Defoe's character Robinson Crusoe - during his sojourn on one of the Juan Fernandez Islands.

Hummingbird pollination

In their recent studies Anderson et al. studied the reproductive biology of D. litoralis. They concluded that the large orange corolla capitula of D. litoralis were hummingbird pollinated, having observed hummingbird visitors on all plants observed. The same team also determined in 2000 that the nectar composition of Dendroseris litoralis has large quantities of sucrose, 15% fructose and 10.9% glucose.

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