The Galápagos Finch

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Finch Hawk Owl Cactus Chamaesyce Portulaca Tribulus Weather Station
Animals Plants Environment

Prickly Pear Cactus

Scientific name: Opuntia

There are several types of prickly pear cactus in the Galápagos. These cacti have flat pads with spines. Some islands have varieties that may grow as tall as 12 meters high and have trunks like trees. Other islands have varieties that grow in bushy short clumps. The prickly pear cactus on Daphne Major are usually 1 to 3 meters tall.

The prickly pear cactus produces green fruits and has yellow flowers 5 to 7 cm across. The cactus finches eat the seeds and nectar from the flowers and eat the fruit and seeds. The ground finches feed on the fruit and seeds of the cactus.

Prickly pear cactus on North Seymour island in the Galápagos. (Photo, Alexis Fisher)

Flowers and fruit on a prickly pear cactus, San Cristobal, Galápagos. (Photo, Kath B., Flickr Creative Commons.)

Data Collected

Properties of Seeds

Seed Length 3.0 mm
Seed Volume 3.6 mm
Seed Rigidity Medium

Number of Seeds

My Notes

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