Baccharis neglecta
Baccharis wrightii
linear-leaf false willow, roosevelt or New Deal weed, rooseveltweed
Wright's baccharis, Wright's baccharis or false willow
(sometimes in clumps) erect, striate-angled, glabrous, eglandular.
erect and slender or short and branched, prominently striate-angled, glabrous, eglandular.
present at flowering;
sessile;
blades (1-nerved, lateral veins obscure) narrowly elliptic to linear, 30–80 × 1–2(–5) mm (moderately thick), bases narrowly attenuate, margins entire or serrate with 2–3 small teeth, apices acute, faces glabrous, gland-dotted (distal reduced, entire).
(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).
cylindro-campanulate;
staminate 3.5–4 mm, pistillate 4–5 mm.
broadly campanulate to hemispheric;
staminate 5–9 mm, pistillate 9–14 mm.
15–30;
corollas 2.5–3.3 mm.
20–30;
corollas 3–5 mm.
10–15;
corollas 2.7–3.3 mm.
20–30;
corollas 4.5–6 mm.
ovate to lanceolate, 1–3 mm, margins yellowish, often scarious, medians green or reddish, apices acute to acuminate (often purplish, sometimes erose).
narrowly lanceolate, 2–6 mm (not keeled), medians green or brown, margins scarious, apices acute or acuminate (erose, abaxial faces glabrous, eglandular).
(axillary and terminal on lateral branches) in pyramidal, paniculiform arrays.
usually borne singly (terminal on slender branches).
1–1.5 mm, 10-nerved, glabrous;
pappi 7–12 mm.
3–5 mm, strongly 5–10-nerved, papillose-roughened, glandular;
pappi 15–20 mm (often brownish).
= 18.
Baccharis neglecta
Baccharis wrightii
As circumscribed here, Baccharis neglecta is known north of Mexico only from central Texas, mostly on the Edwards Plateau. It is recognized by its tall and erect habit, very narrow leaves with small shallow teeth, pyramidal arrays, and 10-ribbed cypselae. It is most similar to B. salicina and may represent a xeromorphic, narrow-leaf form or variety of that species. Baccharis neglecta invades rangelands and pastures, forming dense stands. It is an especially aggressive invader of land converted from crops to pasture and it is a prolific seed producer; it readily resprouts when burned or cut.
(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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