Hazardia squarrosa

(Hooker & Arnott) Greene

Erythea 2: 112. 1894.

Common names: Saw-tooth bristleweed
Illustrated
Basionym: Haplopappus squarrosus Hooker & Arnott Bot. Beechey Voy., 146. 1833 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 448. Mentioned on page 446.
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Shrubs, 30–250 cm. Stems usually sparsely tomentose or pilose. Leaves sessile; blades oblong or oblong-obovate to widely obovate, 13–35 (–50) × 5–17 (–24) mm, coriaceous, bases clasping to subclasping, margins spinulose-dentate (teeth in 3–13 pairs), adaxial faces glabrous to sparsely puberulent. Heads borne in racemo-spiciform or glomerate-spiciform arrays. Involucres turbinate, 8–16 × 7–10 mm. Phyllaries apically spreading to reflexed, oblong, apices with green area 1–2 mm, faces prominently stipitate-glandular (at least apically). Ray-florets 0. Disc-florets 9–30; corollas 9–11 mm. Cypselae 5–8 mm, glabrous.

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Key

1 Leaves sparsely puberulent, not resinous; involucres 8–12 mm; disc florets 9–16, corollas 9–10 mm Hazardia squarrosa var. grindelioides
1 Leaves glabrous or sparsely puberulent, resinous; involucres 11–15 mm; disc florets 18–30, corollas 10–11 mm > 2
2 Stems glabrous or scabrous; phyllaries erect, ± obtuse-mucronate, glabrous, resinous Hazardia squarrosa var. obtusa
2 Stems distally sparsely hairy or glabrescent; phyllaries recurved, obtuse to acute, glandular Hazardia squarrosa var. squarrosa

"fine" is not a number.

... more about "Hazardia squarrosa"
glabrous +  and sparsely puberulent +
not tailed +, rounded +  and obtuse +
distinct +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
glomerate-spiciform +  and racemo-spiciform +
indeterminate +  and determinate +
W. Dennis Clark +
(Hooker & Arnott) Greene +
clasping +  and subclasping +
decurrent +
Haplopappus squarrosus +
3.5 cm35 mm <br />0.035 m <br /> (5 cm50 mm <br />0.05 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
oblong-obovate;widely obovate +
coriaceous +
0.5 cm5 mm <br />0.005 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
reddish-brown +
Saw-tooth bristleweed +
not 2-lipped +  and actinomorphic +
yellow +, red-purple +  and drying +
ampliate +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
fusiform +  and deltoid subterete +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +  and nw Mexico +
resinous +
gland-dotted +
stipitate-glandular +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and disciform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
spreading;erect +
triangular +
toothed +  and entire +
not scarious +
2-carpellate +
persistent +
apically spreading +  and reflexed +
sterile +  and fertile +
bearing subulate enations +, hairy +  and bristly +
concave;usually flat;conic +
exalbuminous +
Illustrated +
pilose +  and tomentose +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus sect. Hazardia +
Hazardia squarrosa +
Hazardia +
species +
6] +, [4 +  and 5 +