Baccharis malibuensis
Baccharis bigelovii
Malibu baccharis, Malibu baccharis or coyote brush
Bigelow's false willow
erect to arching, striate-angled, glabrous or sparsely villous distally (hairs short, spreading).
erect to ascending, slender, striate-angled, glabrous, resinous.
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).
present at flowering; short-petiolate;
blades (1- or obscurely 3-nerved) obovate to oblanceolate, 20–35 × 3–15 mm, distally reduced and narrowed, bases cuneate, margins irregularly incised to coarsely serrate or 2-serrate, faces glabrous, gland-dotted, resinous.
turbinate;
staminate ca. 5 mm, pistillate ca. 5 mm.
campanulate;
staminate 4–5 mm, pistillate 4–5 mm.
35–38;
corollas 2.2–4.2 mm.
25–30;
corollas 2–2.6 mm.
23–36;
corollas 3.7–4.5 mm.
15–20;
corollas 3.5–4 mm.
linear-lanceolate, 2–5 mm, margins yellowish white, scarious, medians green, apices becoming brown with age, ciliate distally.
lanceolate, 1–4 mm, margins scarious, medians green, apices acute, erose.
in cylindric paniculiform arrays.
(20–50) in corymbiform arrays.
2.4–3 mm, 5-nerved, faces with thick, irregular, glandlike hairs;
pappi 6.5–7.5 mm.
1.5–2.2 mm, 5-nerved, glabrous;
pappi 3–4.5 mm.
Baccharis malibuensis
Baccharis bigelovii
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.)
Baccharis bigelovii occurs in the general Chihuahuan Desert region in the Davis Mountains of West Texas, and in the Chiricahua and Huachuca mountains of Arizona. It is recognized by the relatively short stature, obovate, coarsely and irregularly serrate leaves, erose-ciliate phyllaries, and 5-nerved cypselae. It is similar to B. thesioides, which differs mainly by having narrower, more oblong leaves with more evenly serrate margins and spinulose teeth. Further investigation may show these two taxa to be different geographic expressions of a single species centered in Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
CA
WildflowerSearch
iNaturalist
USDA Plants Database
