Scalesia

Scalesia
Scalesia
Scalesia pedunculata on Santa Cruz (Galapagos Islands)
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Tribe: Heliantheae
Genus: Scalesia
Joseph Dalton Hooker
Species

Scalesia is a genus in the family Asteraceae endemic to the Galapagos Islands. It contains fifteen species displaying shrub or arborescent habit. It is unusual because tree species are rare in Asteraceae.

All of the species have soft, pithy wood.

Scalesia species have been called "the Darwin's finches of the plant world" because they show a similarly dramatic pattern of adaptive radiation.

Scalesia pedunculata is a large tree species which grows up to ten meters tall. They reach maturity in about fifteen years. The trees typically grow in stands of the same species and the same age. They die around the same time, and then a new generation of seedlings grow in the same place.

Scalesia atractyloides and Scalesia stewartii are two small tree species, very similar to each other.

References

  • Eliasson, U.H. 1974. Studies in Galapagos Plants XIV. The Genus Scalesia Arn.Opera Botanica, 36: 1-117