Baccharis glutinosa
Baccharis malibuensis
Douglas' falsewillow, marsh baccharis, salt marsh baccharis
Malibu baccharis, Malibu baccharis or coyote brush
erect to ascending, striate, glabrous, gland-dotted, resinous.
erect to arching, striate-angled, glabrous or sparsely villous distally (hairs short, spreading).
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.
present at flowering (sparse); short-petiolate;
blades (1- or 3-nerved) linear to linear-oblanceolate, (15–)20–45(–65) × 1–4(–5) mm, bases narrowly attenuate, margins entire or weakly serrate, apices acute or acuminate (crustose);
faces glabrous or sometimes sparsely pilose (hairs 2-seriate), adaxial gland-dotted (in pits; distal leaves reduced, crowded).
hemispheric; staminate 3.5–5 mm, pistillate 3.8–4.8(–6) mm.
turbinate; staminate ca. 5 mm, pistillate ca. 5 mm.
80–150;
corollas 1.7–3 mm.
35–38;
corollas 2.2–4.2 mm.
26–40;
corollas 3.5–4 mm.
23–36;
corollas 3.7–4.5 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.
linear-lanceolate, 2–5 mm, margins yellowish white, scarious, medians green, apices becoming brown with age, ciliate distally.
in dense, terminal, flat-topped, corymbiform arrays.
in cylindric paniculiform arrays.
0.6–1.5 mm, 5-nerved, glandular, hispidulous distally;
pappi 2.6–4(–7) mm.
2.4–3 mm, 5-nerved, faces with thick, irregular, glandlike hairs;
pappi 6.5–7.5 mm.
= 18.
Baccharis glutinosa
Baccharis malibuensis
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.)
Of conservation concern.
Baccharis malibuensis is known only from the Malibu Creek drainage area in the Santa Monica Mountains (Los Angeles County). It is distinguished by its narrow, often conduplicate and glabrate leaves, cylindric arrays, and summer flowering. According to Beauchamp and Henrickson, it appears to be closely related to and possibly derived from B. plummerae, from which it differs primarily in leaf size, teeth, and indument.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
