Rubus hochstetterorum
| Rubus hochstetterorum | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Rubus hochstetterorum |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Rubus hochstetterorum | ||||||||||||
| Seub. |
Rubus hochstetterorum is a plant of the genus Rubus within the family of Rosaceae (Rosaceae). It occurs exclusively on the Azores archipelago. The species is on the Red List of Threatened Species as safely ( least concern out).
features
Rubus hochstetterorum is a semi-shrub that grows in a flat arch or climbs in bushes and reaches a height of up to 2 meters. Its almost bare, glandless shoot axes are blunt-edged to rounded in cross-section, overflowing with claret-red on the light side, up to 1.4 centimeters thick and covered with strong, curved spines .
The palmate, divided leaves are 5-fold. The individual leaflets are broadly elliptical, strongly convex and have a short tip. The leaf blade is almost rounded with a heart-shaped base. The leaf stalks are covered with strongly curved spines. The leaf tops are green, almost bare and slightly shiny, the leaf undersides are green or gray-green with star hairs.
The 20–30 centimeter wide inflorescences are leafless at the top to 20 to 40 centimeters, below with 3 or 5-fold leaves. The flower stalks are hairy gray tomentose and covered with a few 1–2 millimeter long spines. The hermaphrodite flowers are up to 5 centimeters in diameter. The sepals are gray-green. The 5 light pink or white petals are broadly inverted ovate. Rubus hochstetterorum flowers in June and July.
Distribution and locations
Rubus hochstetterorum is endemic to the Azores and has been identified there from the islands of Corvo , Faial , Flores , Pico , Santa Maria , São Jorge , São Miguel and Terceira . It grows in hedges and in forest coats of the Myrica faya - Erica arborea bush forest at an altitude between 300 and 900 meters above sea level.
Taxonomy
Rubus hochstetterorum was described by Moritz Seubert in 1844 . Seubert had not seen the living plant himself. The description was based on herbaric plants that Carl Hochstetter had collected six years earlier on a three-month trip to the Azores. The holotype came from the island of Pico. With the species name Rubus hochstetterorum (= blackberry of the Hochstetters) Seubert honored both the collector Carl Hochstetter and his father C. F. F. Hochstetter , who helped organize the research and collecting trip.
Individual evidence
- ↑ Silva, L. & Beech, E. (2017): Rubus hochstetterorum. In: IUCN 2017. IUCN Red List of Threatened Species.
- ^ G. Matzke-Hajek: A revision of macaronesian Rubus taxa (Rosaceae) . Edinburgh Journal of Botany 58, pp. 371-382, 2001 digitized
- ↑ M. Seubert: Flora azorica quam ex Collectionibus Schedisque hochstetteri Patris et Filii . Bonnae, 1844
Web links
- Information, photos and raster evidence card (in Portuguese)
- Entry in The Euro + Med Plantbase
- Rubus hochstetterorum in the endangered Red List species the IUCN 2017. Posted by: Silva, L. & Beech, E. , 2016. Retrieved on 4 May 2018 ..