Baccharis malibuensis

R. M. Beauchamp & Henrickson

Aliso 14: 202, fig. 3. 1996.

Common names: Malibu baccharis or coyote brush
EndemicConservation concern
Treatment appears in FNA Volume 20. Treatment on page 29. Mentioned on page 24, 30.

Shrubs, 40–130 (–210) cm (branched near bases). Stems erect to arching, striate-angled, glabrous or sparsely villous distally (hairs short, spreading). Leaves present at flowering (sparse); short-petiolate; blades (1-nerved 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). Heads in cylindric paniculiform arrays. Involucres turbinate; staminate ca. 5 mm, pistillate ca. 5 mm. Phyllaries linear-lanceolate, 2–5 mm, margins yellowish white, scarious, medians green, apices becoming brown with age, ciliate distally. Staminate florets 23–36; corollas 3.7–4.5 mm. Pistillate florets 35–38; corollas 2.2–4.2 mm. Cypselae 2.4–3 mm, 5-nerved, faces with thick, irregular, glandlike hairs; pappi 6.5–7.5 mm.


Phenology: Flowering Aug–Sep.
Habitat: Grassy openings, chaparral
Elevation: 100–300 m

Discussion

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.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

... more about "Baccharis malibuensis"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
cylindric +
Scott D. Sundberg† +  and David J. Bogler +
R. M. Beauchamp & Henrickson +
attenuate +
3-nerved +  and 1-nerved +
4.5 cm45 mm <br />0.045 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
linear;linear-oblanceolate +
1mm;4mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Malibu baccharis or coyote brush +
not 2-lipped +  and actinomorphic +
whitish +, white +  and pale-yellow +
0.22 cm2.2 mm <br />0.0022 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
hispid +  and glabrous +
compressed +, obovoid +  and cylindric +
fertile +  and bisexual +
100–300 m +
resinous +
gland-dotted +
pilose +  and glabrous +
pistillate +  and staminate +
winged +  and beaked +
dispersed +
Grassy openings, chaparral +
racemiform +, corymbiform +  and paniculiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
pistillate +  and staminate +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
5 cm50 mm <br />0.05 m <br /> (5 cm50 mm <br />0.05 m <br />) +
short-petiolate +
spreading-reflexed;spreading-reflexed +
less deltate +  and lanceovate +
serrate +  and entire +
yellowish white +
hispid +  and glabrous +
2-carpellate +
brownish +, whitish +  and tawny +
persistent +
25 +  and 50 +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.75 cm7.5 mm <br />0.0075 m <br />) +
Flowering Aug–Sep. +
linear-lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
conic;tholiform;conic;tholiform;flat +
exalbuminous +
Endemic +  and Conservation concern +
1 (?) +  and 20 (?) +
resinous +
erect +  and arching +
striate-angled +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Baccharis malibuensis +
Baccharis +
species +