Echium nervosum

Plate 1 figs. a–h · 8 separate observations

Echium nervosum, photographed by gwynmwilliams — fig. b gwynmwilliams, CC BY 4.0 / obs. 181715460

Echium nervosum, photographed by Andre Hosper — fig. c Andre Hosper, CC BY 4.0 / obs. 29436814

Echium nervosum, photographed by Tony Rebelo — fig. f Tony Rebelo, CC BY-SA 4.0 / obs. 31093075

Echium nervosum, photographed by Petr Harant — fig. h Petr Harant, CC BY 4.0 / obs. 173111913

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.

The specimen a real sheet, in a real collection

Herbarium: Royal Botanic Gardens, Kew
Accession: K001276163
Filed as: Echium nervosum Dryand. ex Aiton
Det. by: Bramwell, D.
Collected: Perez, G.V.
Origin: ES
The sheet: View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 1 botanical country

Native distribution of Echium nervosum, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.

Region	TDWG code	Continent
Madeira	MDR	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.

Flowering 210 in flower of 332 examined

65%

87%

93%

83%

61%

62%

35%

10%

54%

13%

29%

22%

Proportion of examined Echium nervosum in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	15	23	65%	45% to 81%
Feb	39	45	87%	74% to 94%
Mar	40	43	93%	81% to 98%
Apr	55	66	83%	73% to 90%
May	17	28	61%	42% to 76%
Jun	18	29	62%	44% to 77%
Jul	7	20	35%	18% to 57%
Aug	1	10	10%	2% to 40%
Sep	7	13	54%	29% to 77%
Oct	3	23	13%	5% to 32%
Nov	4	14	29%	12% to 55%
Dec	4	18	22%	9% to 45%

Peak flowering in Mar. Each bar is the share of Echium nervosum observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 210 of 332 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Where it actually grows measured, from 907 observations

Condition	5th percentile	Median	95th percentile
Coldest month, mean daily low	12.6 °C	14.2 °C	14.9 °C
Warmest month, mean daily high	22.2 °C	23.1 °C	24.0 °C
Annual rainfall	1,090 mm	1,755 mm	2,424 mm
Rainfall in the driest quarter	56 mm	75 mm	105 mm

It is not found anywhere that gets close to freezing. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 907 research-grade observations of Echium nervosum 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. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

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.