Baccharis glutinosa
Baccharis sarothroides
Douglas' falsewillow, marsh baccharis, salt marsh baccharis
broom baccharis, desert broom, greasewood, groundsel, rosin-brush
erect to ascending, striate, glabrous, gland-dotted, resinous.
erect, striate, sharply angled, green distally, glabrous, resinous.
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.
cauline (proximal withered and/or sparse at flowering);
sessile;
blades (1-nerved) linear-lanceolate, 5–15 × 1–2 mm, reduced to scales distally, thick, bases narrowed, margins entire (often revolute), apices acute, faces glabrous, minutely gland-dotted, resinous.
hemispheric; staminate 3.5–5 mm, pistillate 3.8–4.8(–6) mm.
cylindric to hemispheric; staminate 4–5.2 mm, pistillate 3–8 mm.
80–150;
corollas 1.7–3 mm.
19–31;
corollas 2.5–3.5 mm.
26–40;
corollas 3.5–4 mm.
18–35;
corollas 4.2–5 mm.
narrowly lanceolate, 2–4 mm, inner series ± equal, margins yellowish, medians green to purplish, apices acuminate, erose or ciliate, faces glabrous, gland-dotted, resinous.
ovate to lanceolate, 1–5 mm, margins yellowish, slightly scarious, medians green to yellow, apices rounded to acute (greenish, abaxial faces glabrous, resinous).
in dense, terminal, flat-topped, corymbiform arrays.
borne singly (on nearly leafless branches) or (laterally on branchlets) in dense paniculiform arrays.
0.6–1.5 mm, 5-nerved, glandular, hispidulous distally;
pappi 2.6–4(–7) mm.
2–2.6 mm, finely 8–10-nerved, glabrous;
pappi 7–12 mm.
= 18.
= 18.
Baccharis glutinosa
Baccharis sarothroides
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Baccharis sarothroides is recognized by its broomlike habit, narrow, sharply angular, nearly leafless, green stems, soon-withering proximal leaves, scalelike distal leaves, and heads often terminal on long branches. Specimens from California have smaller heads that sometimes are arranged laterally along the stems.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
