Brickellia atractyloides

A. Gray

Proc. Amer. Acad. Arts 8: 290. 1870.

Treatment appears in FNA Volume 21. Treatment on page 494. Mentioned on page 491.

Shrubs, 20–50 cm. Stems densely branched, glandular-puberulent. Leaves opposite or alternate; petioles 0–3 mm; blades 3–4-nerved from bases (veins prominent), deltate, lanceolate, or ovate, 10–50 × 5–25 mm, bases acute to truncate or cordate, margins usually sharply dentate or dentate-serrate, rarely entire, apices acute to acuminate, faces glabrous or strigose and minutely glandular-puberulent. Heads in open, paniculiform arrays. Peduncles 10–70 mm, hispid to hispidulous and stipitate-glandular. Involucres cylindric to broadly campanulate, 9–15 mm. Phyllaries 24–33 in 3–4 series, green, 3–16-striate, subequal or unequal, margins narrowly scarious (apices acute to acuminate); outer (often bright green, 4–16-striate) lance-linear, linear-ovate, or broadly ovate, inner (pale green, 3–4-striate) linear or narrowly lanceolate (often chartaceous, scabrellous, often glandular). Florets 40–90; corollas pale yellow-green or cream, often purple-tinged, 6–8 mm. Cypselae 3–5.5 mm, scabrellous; pappi of 18–25 smooth or barbellulate bristles.

Distribution

V21-1239-distribution-map.gif

Ariz., Calif., Colo., Nev., Utah, nw Mexico

Discussion

Varieties 3 (3 in the flora).

All three varieties of Brickellia atractyloides often intergrade and are not readily distinguished in some cases.

Selected References

None.

Key

1 Phyllaries: outer broadly ovate Brickellia atractyloides var. atractyloides
1 Phyllaries: outer lance-ovate to lance-linear > 2
2 Phyllaries, outer: margins ± entire Brickellia atractyloides var. arguta
2 Phyllaries, outer: margins dentate Brickellia atractyloides var. odontolepis

"fine" is not a number.

... more about "Brickellia atractyloides"
not tailed +, truncate +, rounded +  and obtuse +
scarious +
usually ovate +  and lanceolate +
usually terete +  and clavate +
paniculiform +  and open +
indeterminate +  and determinate +
Randall W. Scott +
A. Gray +
acute +  and truncate or cordate +
enlarged +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
dissected +, lobed +, toothed +  and entire +
ovate;lanceolate;ovate;lanceolate;deltate +
5mm;25mm +
papillate +  and rugose +
(4-)5-angled;10-ribbed +
barbellulate +  and smooth +
purple-tinged +, cream +  and pale yellow-green +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
hairy +  and glabrate +
scabrellous +
prismatic +
fertile +  and bisexual +
Ariz. +, Calif. +, Colo. +, Nev. +, Utah +  and nw Mexico +
glandular-puberulent +, strigose +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
indeterminate +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
cylindric;broadly campanulate +
0.9 cm9 mm <br />0.009 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
sessile +  and petiolate +
alternate +  and opposite +
lanceolate +  and lance-linear +
entire +, dentate-serrate +  and dentate +
toothed +, serrate +, lobed +, laciniate-dentate +  and crenate +
ovate +, linear-ovate +  and lance-linear +
2-carpellate +
persistent +
stipitate-glandular +, hispid +  and hispidulous +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
0 cm0 mm <br />0 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
24 +  and 33 +
unequal +  and subequal +
Proc. Amer. Acad. Arts +
bearing subulate enations +, hairy +  and bristly +
flat;convex +
exalbuminous +
appendaged +  and truncate +
hirsutulous +
papillate +
Compositae +
Brickellia atractyloides +
Brickellia +
species +
cylindric +
perennial +  and annual +