Plate 1 figs. a–h · 8 separate observations
Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.
Native range 3 botanical countries
| Region | TDWG code | Continent |
|---|---|---|
| Portugal | POR | EUROPE |
| Spain | SPA | |
| Morocco | MOR | AFRICA |
Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.
Where it actually grows measured, from 51 observations
| Condition | 5th percentile | Median | 95th percentile |
|---|---|---|---|
| Coldest month, mean daily low | 3.3 °C | 9.2 °C | 11.2 °C |
| Warmest month, mean daily high | 23.2 °C | 27.4 °C | 31.7 °C |
| Annual rainfall | 548 mm | 638 mm | 1,096 mm |
| Rainfall in the driest quarter | 13 mm | 17 mm | 70 mm |
It is found where winters are cool but frost is light or absent. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 51 research-grade observations of Cytisus grandiflorus that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.
This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.
Also published as 25 synonyms
A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.
- Cytisogenista barbara (Jahand. & Maire) Rothm.
- Cytisogenista haplophylla (Maire & Sennen) Rothm.
- Cytisogenista maura (Humbert & Maire) Rothm.
- Cytisus affinis Boiss.
- Cytisus barbarus Maire
- Cytisus barbarus var. hapolophyllus Maire & Sennen
- Cytisus barbatus (Jahand. & Maire) Maire
- Cytisus barbatus var. hapolophyllus Maire & Sennen
- Cytisus grandiflorus subsp. barbarus (Jahand. & Maire) Maire
- Cytisus grandiflorus subsp. cabezudoi Talavera
- Cytisus grandiflorus subsp. haplophyllus (Maire & Sennen) Maire
- Cytisus grandiflorus var. barbatus (Jahand. & Maire) Maire
- Cytisus grandiflorus var. haplophyllus (Maire & Sennen) Maire
- Cytisus maurus Humbert & Maire
- Cytisus scoparius subsp. maurus (Humbert & Maire) Talavera
- Genista grandiflora (DC.) Spach
- Laburnum grandiflorum (DC.) J.Presl
- Sarothamnus affinis Boiss.
- Sarothamnus arboreus var. barbarus Jahand. & Maire
- Sarothamnus arboreus var. barbatus Jahand. & Maire
- Sarothamnus grandiflorus (DC.) Webb
- Sarothamnus lusitanicus var. obscurum Samp.
- Sarothamnus maurus (Humbert & Maire) Raynaud
- Sarothamnus virgatus Webb
and 1 more.
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
- Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.
We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.