Baccharis glutinosa

Persoon

Sym. Pl. 2: 425. 1807.

Common names: Saltmarsh baccharis Douglas’s falsewillow
Synonyms: Baccharis douglasii de Candolle
Treatment appears in FNA Volume 20. Treatment on page 27. Mentioned on page 26.

Perennials, 60–210 cm (rhizomatous, forming colonies). Stems erect to ascending, striate, glabrous, gland-dotted, resinous. Leaves present at flowering; short-petiolate; blades (1-nerved 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. Heads in dense, terminal, flat-topped, corymbiform arrays. Involucres hemispheric; staminate 3.5–5 mm, pistillate 3.8–4.8 (–6) mm. Phyllaries narrowly lanceolate, 2–4 mm, inner series ± equal, margins yellowish, medians green to purplish, apices acuminate, erose or ciliate, faces glabrous, gland-dotted, resinous. Staminate florets 26–40; corollas 3.5–4 mm. Pistillate florets 80–150; corollas 1.7–3 mm. Cypselae 0.6–1.5 mm, 5-nerved, glandular, hispidulous distally; pappi 2.6–4 (–7) mm. 2n = 18.


Phenology: Flowering Jul–Oct (all year).
Habitat: Moist salt marshes, coastal strands, stream edges, hillsides, railroads
Elevation: 0–1200 m

Distribution

V20-13-distribution-map.gif

Calif., Oreg., Mexico (Baja California)

Discussion

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.

Selected References

None.

Lower Taxa

None.

... more about "Baccharis glutinosa"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Scott D. Sundberg† +  and David J. Bogler +
Persoon +
tapered +
3-nerved +  and 1-nerved +
5 cm50 mm <br />0.05 m <br /> (13 cm130 mm <br />0.13 m <br />) +
lanceolate +
8mm;30mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
attenuate +
Saltmarsh baccharis +  and Douglas’s falsewillow +
not 2-lipped +  and actinomorphic +
whitish +, white +  and pale-yellow +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, obovoid +  and cylindric +
fertile +  and bisexual +
Calif. +, Oreg. +  and Mexico (Baja California) +
0–1200 m +
resinous +
gland-dotted;black gland-dotted +
pistillate +  and staminate +
winged +  and beaked +
dispersed +
Moist salt marshes, coastal strands, stream edges, hillsides, railroads +
racemiform +, corymbiform +  and paniculiform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
pistillate +  and staminate +
0.48 cm4.8 mm <br />0.0048 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
hemispheric +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.48 cm4.8 mm <br />0.0048 m <br />) +
short-petiolate +
spreading-reflexed;spreading-reflexed +
less deltate +  and lanceovate +
dentate +  and entire +
hispid +  and glabrous +
green +  and purplish +
2-carpellate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
brownish +, whitish +  and tawny +
persistent +
25 +  and 50 +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Flowering Jul–Oct (all year). +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
conic;tholiform;conic;tholiform;flat +
exalbuminous +
1 (?) +  and 20 (?) +
resinous +
gland-dotted +
erect +  and ascending +
appendaged +  and truncate +
papillate +  and smooth +
Baccharis douglasii +
Baccharis glutinosa +
Baccharis +
species +
60 cm600 mm <br />0.6 m <br /> (210 cm2,100 mm <br />2.1 m <br />) +
tree +, shrub +  and subshrub +