Baccharis vanessae
Baccharis salicifolia
Encinitas baccharis, Encinitas false willow or baccharis, encinitis false willow
mule's fat, mule-fat, seepwillow, water wally
erect, slender, rounded, smooth, glabrous or stipitate-glandular proximal to heads.
spreading to ascending, green to tan, simple proximally, sparingly branched distally, striate-angled, glabrous or minutely hairy, resinous and ± resin-varnished.
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 (abundant, well developed);
sessile or petiolate;
blades lanceolate-elliptic, slightly falcate (willowlike), 30–150 × 3–20 mm, bases attenuate, margins usually finely serrate from bases to apices, sometimes entire, apices acute to acuminate, faces glabrous, gland-dotted, ± resinous.
funnelform;
staminate 3–5 mm, pistillate 3–5 mm.
hemispheric;
staminate 3–6 mm, pistillate involucres 3–6 mm.
ca. 25;
corollas 2.5 mm.
50–150;
corollas 2–3.5 mm.
15–22;
corollas 4 mm.
(10–)17–48;
corollas 4–6 mm.
lanceolate (not keeled), 1–4 mm, margins ciliate, chartaceous, apices acute to acuminate (abaxial faces scurfy-glandular).
ovate to lanceolate, 2–4 mm, margins scarious, erose or irregularly dentate, midribs distinct, medians green or reddish, apices (greenish or brownish purple) obtuse to acuminate (pale and dry, glabrous).
borne singly or in (pedunculate clusters) in loose paniculiform or racemiform arrays.
in terminal, compound corymbiform arrays (often involving distal branches).
2–3 mm, 10-nerved, glabrous or ciliate along nerves;
pappi 7–10 mm.
0.8–1.5 mm, 5-nerved, glabrous;
pappi 3–6 mm.
= 18.
= 18, 36.
Baccharis vanessae
Baccharis salicifolia
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 salicifolia is part of a complex that extends through the southwestern United States, Mexico, Central America, and South America to Argentina and Chile (J. Cuatrecasas 1968). It is recognized by the narrowly lanceolate, willowlike, finely serrate leaves with acute or acuminate apices, smallish heads in dense clusters, reddish phyllaries, and 5-nerved cypselae. By tagging and measuring individual plants throughout the year, D. H. Wilken (1972) demonstrated that B. salicifolia has distinct seasonal forms. The North American plants were once known as B. glutinosa or B. viminea, which were differentiated from each other by differences in woodiness, leaf size and serration, and flowering time.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
OR
Flora NW
PNW Herbaria
