Baccharis glutinosa


Sym. Pl. 2: 425. 1807.

Common names: Saltmarsh baccharis Douglas’s falsewillow
Synonyms: Baccharis douglasii de Candolle
Treatment appears in FNA Volume 20. Treatment on page 27. Mentioned on page 26.

Perennials, 60–210 cm (rhizoma-tous, forming colonies). Stems erect to ascending, striate, glabrous, gland-dotted, resinous. Leaves present at flowering; short-petiolate; blades (1- or 3-nerved, larger prominently 3-nerved) lanceolate, 50–130 × 8–30 mm, bases tapered to petioles, margins entire or finely dentate, apices acute to acuminate, faces glabrous, black gland-dotted. Heads in dense, terminal, flat-topped, corymbiform arrays. Involucres hemispheric; staminate 3.5–5 mm, pistillate 3.8–4.8(–6) mm. Phyllaries narrowly lanceolate, 2–4 mm, inner series ± equal, margins yellowish, medians green to purplish, apices acuminate, erose or ciliate, faces glabrous, gland-dotted, resinous. Staminate florets 26–40; corollas 3.5–4 mm. Pistillate florets 80–150; corollas 1.7–3 mm. Cypselae 0.6–1.5 mm, 5-nerved, glandular, hispidulous distally; pappi 2.6–4(–7) mm. 2n = 18.

Phenology: Flowering Jul–Oct (all year).
Habitat: Moist salt marshes, coastal strands, stream edges, hillsides, railroads
Elevation: 0–1200 m


Calif., Oreg., Mexico (Baja California).


Occurring along the coast and in interior valleys, Baccharis glutinosa is recognized by the erect, simple stems growing in patches from rhizomes, large lanceolate leaves with three veins and blackish glandular dots, heads in dense, compact, terminal, corymbiform arrays and more or less uniform inner phyllaries. G. L. Nesom (1990h) noted that it is similar to forms of the South American species Baccharis pingraea de Candolle, and that the two taxa may be conspecific.

Selected References


Lower Taxa

... more about "Baccharis glutinosa"
Scott D. Sundberg† +  and David J. Bogler +
Persoon +
Saltmarsh baccharis +  and Douglas’s falsewillow +
Calif. +, Oreg. +  and Mexico (Baja California). +
0–1200 m +
Moist salt marshes, coastal strands, stream edges, hillsides, railroads +
Flowering Jul–Oct (all year). +
Baccharis douglasii +
Baccharis glutinosa +
Baccharis +
species +