Biology:Euphorbia regis-jubae
| Euphorbia regis-jubae | |
|---|---|
| |
| In habitat, Teguise, Lanzarote | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Euphorbiaceae |
| Genus: | Euphorbia |
| Species: | E. regis-jubae
|
| Binomial name | |
| Euphorbia regis-jubae J.Gay[2]
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| Synonyms[2] | |
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Euphorbia regis-jubae is a species of flowering plant in the family Euphorbiaceae, native to the eastern Canary Islands, western Morocco, north-western Western Sahara.[2] In Spanish, it is known as tabaiba morisca.[3] It has often been confused with Euphorbia lamarckii.
Description
Euphorbia regis-jubae is a shrub, up to 2 m (7 ft) tall. It has light brown stems and terminal rosettes of leaves that are narrow and oblong, with a pointed or somewhat blunt apex. The inflorescences are pedunculate, umbel-like, usually simple with five to eight rays, more rarely compound. The greenish-yellow floral bracts are large, not joined at the base, and persist when the fruit has formed. The fruit capsules are light brown or red. The seeds have a stalked elaiosome (caruncle).[4][3]
Inflorescence
Fruit
Taxonomy
Euphorbia regis-jubae was first described by Jaques Étienne Gay in 1847.[2] It has been treated as a subspecies of other Canary Island euphorbias under the names E. obtusifolia subsp. regis-jubae and E. lamarckii subsp. regis-jubae.[2]
E. regis-jubae has regularly been misidentified. The illegitimate name Euphorbia obtusifolia Poir. has been used "indiscriminately" for two species found in the Canary Islands: the eastern E. regis-jubae, and the western E. lamarckii. In 2003, David Bramwell listed seven publications from 1847 to 1993 that gave the wrong names or the wrong distributions for these two species.[5]
Distribution
Euphorbia regis-jubae is native to the eastern Canary Islands – Gran Canaria, Lanzarote and Fuerteventura, western Morocco and north-western Western Sahara.[2] Its distribution differs from that of E. lamarckii, with which it has often been confused; E. lamarckii is found in the western Canary Islands – Tenerife, north-western La Gomera, La Palma and El Hierro.[6]
References
- ↑ "Appendices | CITES". https://cites.org/eng/app/appendices.php.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 "Euphorbia regis-jubae", World Checklist of Selected Plant Families (Royal Botanic Gardens, Kew), http://apps.kew.org/wcsp/namedetail.do?name_id=81854, retrieved 2018-01-29
- ↑ 3.0 3.1 González, Manuel Luis Gil (2018), Euphorbia regis-jubae Sweet, http://www.floradecanarias.com/euphorbia_regis-jubae.html, retrieved 2018-01-29
- ↑ Bramwell, David; Bramwell, Zoë (2001), Wild Flowers of the Canary Islands (2nd ed.), Madrid: Editorial Rueda, pp. 208–209, ISBN 978-84-7207-129-2 (as E. broussonetii)
- ↑ Bramwell, David (2003), "Observations on a proposal to conserve the name Euphorbia obtusifolia Poiret.", Botánica Macaronésica (24): 143–147, https://www.researchgate.net/publication/28138867, retrieved 2018-01-29
- ↑ "Euphorbia lamarckii", World Checklist of Selected Plant Families (Royal Botanic Gardens, Kew), http://apps.kew.org/wcsp/namedetail.do?name_id=80484, retrieved 2018-01-27
Wikidata ☰ Q5851909 entry
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