Baccharis texana
Baccharis angustifolia
prairie baccharis or false willow, prairie false willow
narrowleaf baccharis, saltwater false willow
simple, erect or procumbent, rigid (woody proximally), herbaceous and leafy distally (dying back annually), striate-angled, glabrous, non-resinous.
erect to ascending, slender, striate, glabrous, resinous.
present at flowering;
sessile;
blades (1-nerved) linear to narrowly lanceolate, 10–40 × 1–4 mm, bases narrowed, margins minutely undulate, apices acute, faces glabrous, gland-dotted (distal leaves reduced, scalelike).
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.
campanulate;
staminate 4–7 mm, pistillate 7–9 mm.
campanulate;
staminate 3–4 mm, pistillate 3.5–5 mm.
20–30;
corollas 3.5–4 mm.
15–20;
corollas ca. 3 mm.
15–20;
corollas 4–5 mm.
15–20;
corollas 2.5 mm.
lanceolate, 1–7 mm, margins scarious, erose-ciliate, medians green (midribs dark, keeled, dilated), apices acute to acuminate (erose-ciliate, abaxial faces glabrous, minutely papillose-gland-dotted).
ovate to lanceolate, 1–4 mm, margins scarious, medians green, sometimes purplish, apices green to purplish, obtuse to acute.
(on short peduncles) in loose corymbiform arrays.
(in groups of 3–5 near branch tips) in broad paniculiform arrays (of 100+).
3–5 mm, prominently 6–8-nerved, glabrous;
pappi 11–14 mm.
1–2 mm, 10-nerved, glabrous;
pappi 6–8 mm.
Baccharis texana
Baccharis angustifolia
Baccharis texana is recognized by its low, subshrub habit, simple, more or less herbaceous and leafy stems arising from woody bases, narrow leaves with minutely undulate margins, large pedunculate heads, and erose-ciliate phyllaries with dilated midribs.
(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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