Baccharis glutinosa
Baccharis angustifolia
Douglas' falsewillow, marsh baccharis, salt marsh baccharis
narrowleaf baccharis, saltwater false willow
erect to ascending, striate, glabrous, gland-dotted, resinous.
erect to ascending, slender, striate, 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.
present at flowering;
sessile;
blades (1-nerved) 20–60 × 1–2(–5) mm, ± succulent, bases narrowly attenuate, margins mostly entire, apices acute, faces glabrous, not gland-dotted.
hemispheric; staminate 3.5–5 mm, pistillate 3.8–4.8(–6) mm.
campanulate; staminate 3–4 mm, pistillate 3.5–5 mm.
80–150;
corollas 1.7–3 mm.
15–20;
corollas ca. 3 mm.
26–40;
corollas 3.5–4 mm.
15–20;
corollas 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, 1–4 mm, margins scarious, medians green, sometimes purplish, apices green to purplish, obtuse to acute.
in dense, terminal, flat-topped, corymbiform arrays.
(in groups of 3–5 near branch tips) in broad paniculiform arrays (of 100+).
0.6–1.5 mm, 5-nerved, glandular, hispidulous distally;
pappi 2.6–4(–7) mm.
1–2 mm, 10-nerved, glabrous;
pappi 6–8 mm.
= 18.
Baccharis glutinosa
Baccharis angustifolia
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 angustifolia is most commonly found in brackish, marshy areas near the coast of Atlantic and Gulf coastal plains. It is easily recognized by its 1-nerved, relatively narrow and fleshy, entire leaves, and the more or less pyramidal arrays of relatively small heads. Rarely, some specimens have slightly broader leaves with an occasional tooth, perhaps due to introgression with B. halimifolia.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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