Baccharis brachyphylla

A. Gray

Smithsonian Contr. Knowl. 5(6): 83. 1853.

Common names: Shortleaf baccharis or false willow
Treatment appears in FNA Volume 20. Treatment on page 27. Mentioned on page 24.

Shrubs or subshrubs, 20–100 cm (finely and densely branched from bases). Stems erect, green, slender and wandlike, striate-angled, glabrate proximally, hispidulous distally (near heads). Leaves present at flowering (reduced, sparse); sessile; blades (1-nerved) linear to linear-lanceolate, 5–17 × 1–2 mm (reduced distally to subulate bracts), margins entire, apices acute, faces glabrous (sometimes minutely papillose). Heads (on racemiform lateral branches) in paniculiform arrays. Involucres funnelform or campanulate; staminate 3–5.2 mm, pistillate 4–6 mm. Phyllaries lanceolate, 1–4 mm, margins scarious, medians green (hispid), apices acute to acuminate. Staminate florets (8–) 12–18 (–29); corollas 3.3–4.2 mm. Pistillate florets 8–18; corollas 2–2.8 mm. Cypselae 1.5–2.5 mm, 5-nerved, hispid; pappi 4.5–7 mm. 2n = 18.


Phenology: Flowering Jul–Aug.
Habitat: Canyons, dry washes, sandy deserts, mesas
Elevation: 300–1200 m

Distribution

V20-11-distribution-map.gif

Ariz., Calif., Nev., N.Mex., Tex., Mexico (Baja California), Mexico (Chihuahua), Mexico (Sonora)

Discussion

Baccharis brachyphylla is characterized by the densely branching habit, narrow stems, and small, linear-lanceolate leaves, and hispidulous hairs on stems, leaves, phyllaries, and cypselae.

Selected References

None.

Lower Taxa

None.
... more about "Baccharis brachyphylla"
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
paniculiform +
indeterminate +  and determinate +
Scott D. Sundberg† +  and David J. Bogler +
A. Gray +
decurrent +
3-nerved +  and 1-nerved +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
linear;linear-lanceolate +
1mm;2mm +
rugulose +  and muricate +
barbellulate +  and barbellate +
Shortleaf baccharis or false willow +
not 2-lipped +  and actinomorphic +
whitish +, white +  and pale-yellow +
0.2 cm2 mm <br />0.002 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
compressed +, obovoid +  and cylindric +
fertile +  and bisexual +
Ariz. +, Calif. +, Nev. +, N.Mex. +, Tex. +, Mexico (Baja California) +, Mexico (Chihuahua) +  and Mexico (Sonora) +
300–1200 m +
resinous +
gland-dotted +
pistillate +  and staminate +
winged +  and beaked +
dispersed +
Canyons, dry washes, sandy deserts, mesas +
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 />) +
campanulate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
spreading-reflexed;spreading-reflexed +
less deltate +  and lanceovate +
hispid +  and glabrous +
2-carpellate +
brownish +, whitish +  and tawny +
persistent +
25 +  and 50 +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering Jul–Aug. +
lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Smithsonian Contr. Knowl. +
styliferous +, neuter +  and pistillate +
bearing subulate enations +, hairy +  and bristly +
conic;tholiform;conic;tholiform;flat +
exalbuminous +
1 (?) +  and 20 (?) +
resinous +
striate-angled +  and wand-like +
slender +
appendaged +  and truncate +
papillate +  and smooth +
Compositae +
Baccharis brachyphylla +
Baccharis +
species +
subshrub +  and shrub +