Lobelia laxifloraKunth

Sierra Madre lobelia

WFO wfo-0000815318 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Lobelia laxiflora, photographed by Viacheslav Shalisko
fig. a Viacheslav Shalisko, CC BY 4.0 / 2022-05-18 / obs. 198654449

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
Smithsonian, US National Herbarium
Accession
US 1138683
Filed as
Lobelia laxiflora f. flava E.Wimm.
Det. by
Wilbur, R. L.
Collected
P. C. Standley 1922-04-07
Origin
SV
The sheet
View the digitised specimen (CC0 1.0)

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 14 botanical countries

Regions where Lobelia laxiflora is native: Arizona, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, Panamá ArizonaMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestColombiaCosta RicaEl SalvadorGuatemalaHondurasNicaraguaPanamá
Native distribution of Lobelia laxiflora, 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.
RegionTDWG codeContinent
Arizona ARI NORTHERN AMERICA
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
Mexico Southwest MXS
Colombia CLM SOUTHERN AMERICA
Costa Rica COS
El Salvador ELS
Guatemala GUA
Honduras HON
Nicaragua NIC
Panamá PAN

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 1,061 in flower of 1,105 examined

Proportion of examined Lobelia laxiflora in flower, by month
Month In flower Examined Share 95% interval
Jan 145 150 97% 92% to 99%
Feb 170 171 99% 97% to 100%
Mar 231 236 98% 95% to 99%
Apr 234 246 95% 92% to 97%
May 110 112 98% 94% to 100%
Jun 26 31 84% 67% to 93%
Jul 13 15 87% 62% to 96%
Aug 15 18 83% 61% to 94%
Sep 12 14 86% 60% to 96%
Oct 18 23 78% 58% to 90%
Nov 37 37 100% 91% to 100%
Dec 50 52 96% 87% to 99%

Peak flowering in Nov. Each bar is the share of Lobelia laxiflora 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. 1,061 of 1,105 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 1,852 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 2.0 °C 6.9 °C 14.8 °C
Warmest month, mean daily high 19.9 °C 25.1 °C 32.1 °C
Annual rainfall 575 mm 1,191 mm 3,185 mm
Rainfall in the driest quarter 15 mm 34 mm 197 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 1,852 research-grade observations of Lobelia laxiflora 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.

Also published as 71 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.

  • Dortmanna amygdalina Kuntze
  • Dortmanna concolor (M.Martens & Galeotti) Kuntze
  • Dortmanna haenkeana (C.Presl) Kuntze
  • Dortmanna laxiflora (Kunth) Kuntze
  • Lobelia amygdalina Willd. ex Roem. & Schult.
  • Lobelia andina Benth.
  • Lobelia angulato-dentata Hook. & Arn.
  • Lobelia angustifolia (A.DC.) Urbina
  • Lobelia canescens C.Presl
  • Lobelia cavanillesiana Roem. & Schult.
  • Lobelia cavanillesii Mart.
  • Lobelia cavanillesii var. lutea F.Haage & F.Schmidt
  • Lobelia concolor M.Martens & Galeotti
  • Lobelia costaricana (Planch. & Oerst.) E.Wimm.
  • Lobelia costaricana var. magna E.Wimm.
  • Lobelia delessertiana E.Wimm.
  • Lobelia dracunculoides Willd.
  • Lobelia fissa Willd. ex Roem. & Schult.
  • Lobelia haenkeana (C.Presl) A.DC.
  • Lobelia haenkeana var. panamensis E.Wimm.
  • Lobelia laxiflora f. angustifolia (A.DC.) Voss
  • Lobelia laxiflora f. brevifolia (Zahlbr.) E.Wimm.
  • Lobelia laxiflora f. concolor (M.Martens & Galeotti) E.Wimm.
  • Lobelia laxiflora f. flava E.Wimm.

and 47 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.