Baccharis vanessae
Baccharis salicina
Encinitas baccharis, Encinitas false willow or baccharis, encinitis false willow
Great Plains false willow, willow-baccharis
erect, slender, rounded, smooth, glabrous or stipitate-glandular proximal to heads.
ascending, striate-angled, glabrous, smooth or minutely roughened, resinous.
often withering and sparse by flowering;
sessile;
blades (1-nerved) filiform to linear-oblanceolate, 10–30 × 1–3 mm (slightly fleshy), bases narrowed, margins entire (revolute), apices acute (mucronate), faces glabrous, gland-dotted.
present at flowering (numerous and well developed); short-petiolate;
blades (at least broader distinctly 3-nerved) oblong to oblanceolate, 25–70 × 5–10(–20) mm, bases tapering attenuate, margins usually serrate distally (teeth 1–3, coarse irregular, ca. 5 mm apart), sometimes entire, apices acute or obtuse, faces finely gland-dotted.
funnelform;
staminate 3–5 mm, pistillate 3–5 mm.
narrowly obconic to campanulate;
staminate 4–7 mm, pistillate 5–9 mm.
ca. 25;
corollas 2.5 mm.
25–30;
corollas 3–4 mm.
15–22;
corollas 4 mm.
20–25;
corollas 3–5 mm.
lanceolate (not keeled), 1–4 mm, margins ciliate, chartaceous, apices acute to acuminate (abaxial faces scurfy-glandular).
lanceolate, 2–6 mm, margins scarious, medians green or reddish, apices greenish or purplish, often erose-ciliate, faces glabrous, gland-dotted, resinous.
borne singly or in (pedunculate clusters) in loose paniculiform or racemiform arrays.
(100–200+, short-pedunculate or sessile) in (large, crowded, leafy) paniculiform arrays.
2–3 mm, 10-nerved, glabrous or ciliate along nerves;
pappi 7–10 mm.
1.2–2 mm, irregularly 8–10-nerved, glabrous;
pappi 8–12 mm (elongating in fruit).
= 18.
Baccharis vanessae
Baccharis salicina
Of conservation concern.
Baccharis vanessae is highly localized in chaparral remnants in relictual Torrey Pine forests of coastal San Diego County. It is distinguished from other species of Baccharis by its filiform leaves and delicate, ciliate phyllaries that reflex at maturity.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Baccharis salicina is recognized by its narrow, gland-dotted leaves with 1–3 irregular teeth on the distal half, heads in loose leafy arrays, campanulate involucres, and cypselae with 8–10 ribs.
The recognition of Baccharis emoryi as a separate species in other floras has been based on its wider, glabrous, eglandular leaves, more cylindric pistillate involucres, and dense whitish pappi. It was said to occur both west of the Rocky Mountains and in western Texas. In our study, expressions of the characters used to distinguish B. emoryi from other species were found to be inconsistent and inadequate to warrant recognition as a distinct species. There appears to be a complex of up to four species—emoryi, salicina, neglecta and angustifolia—that intergrade from west to east. Characteristics progress from broader leaves and larger heads (emoryi form of salicina) to narrow leaves with small heads (neglecta, angustifolia). The delimitation of taxa within this complex merits further investigation.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
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iNaturalist
USDA Plants Database
KS Wildflowers
