Baccharis glutinosa
Baccharis wrightii
Douglas' baccharis, Douglas' falsewillow, marsh baccharis, salt marsh baccharis
Wright's baccharis, Wright's baccharis or false willow
erect to ascending, striate, glabrous, gland-dotted, resinous.
erect and slender or short and branched, prominently striate-angled, glabrous, eglandular.
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.
(reduced) proximal often withered and absent at flowering;
sessile;
blades oblanceolate to narrowly oblong, 5–10(–25) × 1–3(–7) mm (thin), bases narrowed, margins entire or finely serrate (teeth aristate), faces eglandular, not resinous (distal reduced to linear or oblong scales).
hemispheric;
staminate 3.5–5 mm, pistillate 3.8–4.8(–6) mm.
broadly campanulate to hemispheric;
staminate 5–9 mm, pistillate 9–14 mm.
80–150;
corollas 1.7–3 mm.
20–30;
corollas 3–5 mm.
26–40;
corollas 3.5–4 mm.
20–30;
corollas 4.5–6 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.
narrowly lanceolate, 2–6 mm (not keeled), medians green or brown, margins scarious, apices acute or acuminate (erose, abaxial faces glabrous, eglandular).
in dense, terminal, flat-topped, corymbiform arrays.
usually borne singly (terminal on slender branches).
0.6–1.5 mm, 5-nerved, glandular, hispidulous distally;
pappi 2.6–4(–7) mm.
3–5 mm, strongly 5–10-nerved, papillose-roughened, glandular;
pappi 15–20 mm (often brownish).
= 18.
= 18.
Baccharis glutinosa
Baccharis wrightii
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 wrightii is recognized by its bushy, broomlike habit, stems woody only at bases, relatively small, non gland-dotted leaves, early flowering period, heads borne singly, conspicuous, brownish pistillate pappi, and relatively large, strongly nerved cypselae.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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USDA Plants Database
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