Opuntia helleri
| Opuntia helleri | ||||||||||||
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Opuntia helleri |
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| Opuntia helleri | ||||||||||||
| K. Schum. |
Opuntia helleri is a species of plant in the genus Opuntia ( Opuntia ) from the cactus family(Cactaceae). The epithet of the species honors the American zoologist Edmund Heller , who discovered the species.
description
Opuntia helleri grows stretched out or climbing and often forms dense cushions with a stature height of 0.7 to 2 meters. A tribe is usually not formed. The yellowish green shoot sections are round, oblong or egg-shaped, 20 to 37 centimeters long, 10 to 22 centimeters wide and 1.3 to 2.6 centimeters thick. The yellow, 2 to 6 millimeters long glochids are sometimes missing. The 7 to 28 thorns of different lengths are yellowish white, become darker with age and are evenly distributed over the shoot. They are bristly, not dimorphic, not pointed, spread out, and pliable.
The yellow flowers are 4 to 8 centimeters long and reach a diameter of 3 to 5.5 centimeters. The fruits are green, spherical to elongated and covered with glochids and small thorns.
Distribution and systematics
Opuntia helleri is widespread on the islands of Isla Darwin , Isla Genovesa , Isla Marchena and Isla Wolf in the Columbus Archipelago .
It was first described in 1902 by Karl Moritz Schumann .
proof
literature
- Edward F. Anderson : The Cactus Family . Timber Press: Portland (Oregon), 2001, pp. 500 f. ISBN 0-88192-498-9
- Curt Backeberg : Die Cactaceae: Handbuch der Kakteenkunde . 2nd edition, 1984, Volume I, p. 562. ISBN 3-437-30380-5
Individual evidence
- ^ Proceedings of the American Academy of Arts and Sciences . Volume 38, Boston 1902, p. 180.
