Opuntia insularis
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| A. Stewart |
Opuntia insularis is a species of plant in the genus Opuntia ( Opuntia ) from the cactus family(Cactaceae). The epithet of the species refers to the range of the species, the Galápagos Islands .
description
Opuntia insularis grows shrubby to tree-like with a height of 1.5 to 2.5 meters. A tribe is hardly formed. The green to greenish yellow shoot sections are round, oblong or egg-shaped, 20 to 52 centimeters long, 18 to 25 centimeters wide and 0.5 to 2.5 centimeters thick. The 14 to 18 millimeters apart areoles are whitish and have a diameter of 4 to 7 millimeters. The yellow glochids are 4 to 6 millimeters long. The roughly equally long, 10 to 50 thorns are yellow, become reddish brown or dark brown with age and are evenly distributed over the shoot. Some are pointed, others bristly, the majority are 1 to 2 centimeters long, but some thorns are up to 5 centimeters long.
Little is known about the presumably yellow flowers . The green fruits are spherical, are 2 to 4.2 centimeters long, reach a diameter of 2 to 3 centimeters and are covered with small thorns and glochids.
Distribution and systematics
Opuntia insularis is widespread on the islands of Isla Fernandina and Isla Isabela in the Columbus Archipelago .
It was first described in 1911 by Alban N. Stewart .
proof
literature
- Edward F. Anderson : The Cactus Family . Timber Press: Portland (Oregon), 2001, p. 502. ISBN 0-88192-498-9
- Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd edition, 1984, Volume I, p. 561. ISBN 3-437-30380-5
Individual evidence
- ^ Proceedings of the California Academy of Sciences Series 4, Volume 1, 1911, p. 113.
