Baccharis glutinosaPers.

saltmarsh baccharis

WFO wfo-0000000226 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Baccharis glutinosa, photographed by Eduardo Luis Beltrocco
fig. a Eduardo Luis Beltrocco, CC BY 4.0 / 2022-03-26 / obs. 184743379

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
The New York Botanical Garden
Accession
00855811
Filed as
Baccharis glutinosa Pers.
Det. by
G. Heiden 2012-01-01
Collected
C. E. O. Kuntze 1892-12
Origin
BR
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 12 botanical countries

Regions where Baccharis glutinosa is native: California, Oregon, Argentina Northeast, Argentina Northwest, Argentina South, Brazil South, Chile Central, Chile North, Chile South, Galápagos, Paraguay, Uruguay CaliforniaOregonArgentina NortheastArgentina NorthwestArgentina SouthBrazil SouthChile CentralChile NorthChile SouthParaguayUruguay Galápagos
Native distribution of Baccharis glutinosa, 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.
RegionTDWG codeContinent
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Brazil South BZS
Chile Central CLC
Chile North CLN
Chile South CLS
Galápagos GAL
Paraguay PAR
Uruguay URU
California CAL NORTHERN AMERICA
Oregon ORE

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 232 in flower of 278 examined

Proportion of examined Baccharis glutinosa in flower, by month
Month In flower Examined Share 95% interval
Jan 29 32 91% 76% to 97%
Feb 19 27 70% 52% to 84%
Mar 4 7 57% 25% to 84%
Apr 16 17 94% 73% to 99%
May 5 8 63% 31% to 86%
Jun 4 7 57% 25% to 84%
Jul 25 29 86% 69% to 95%
Aug 38 38 100% 91% to 100%
Sep 37 45 82% 69% to 91%
Oct 26 35 74% 58% to 86%
Nov 12 15 80% 55% to 93%
Dec 17 18 94% 74% to 99%

Peak flowering in Aug. Each bar is the share of Baccharis glutinosa 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. 232 of 278 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 1,081 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 4.1 °C 7.0 °C 10.2 °C
Warmest month, mean daily high 16.8 °C 26.5 °C 30.6 °C
Annual rainfall 405 mm 745 mm 1,194 mm
Rainfall in the driest quarter 4 mm 9 mm 177 mm

It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 1,081 research-grade observations of Baccharis glutinosa 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 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.

  • Baccharis angustifolia (Cass.) Desf. ex DC.
  • Baccharis douglasii DC.
  • Baccharis glutinosa var. glutinosa
  • Baccharis haenkei DC.
  • Baccharis huydobriana J.Rémy
  • Baccharis medullosa DC.
  • Baccharis medullosa f. gracilis Heering
  • Baccharis pingraea DC.
  • Baccharis serrulata var. pingraea (DC.) Baker
  • Baccharis serrulata var. subscandens Kuntze
  • Baccharis subpenninervis Sch.Bip.
  • Baccharis subpingraea Heering
  • Baccharis subpingraea f. borealis Heering
  • Baccharis subpingraea f. ciliatodentata Heering
  • Baccharis subpingraea f. crassifolia Heering
  • Baccharis subpingraea f. crassinervis Heering
  • Baccharis subpingraea f. montevidensis Heering
  • Baccharis subpingraea f. punctulata Heering
  • Baccharis subpingraea f. subpingraea
  • Baccharis viscosa Hook. & Arn.
  • Baccharis viscosa var. viscosa
  • Conyza montevidensis Spreng.
  • Molina viscosa Ruiz & Pav. ex Spreng.
  • Pingraea angustifolia Cass.

and 1 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. USDA PLANTS Database. common name, checklist symbol BADO. public domain. 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.