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.

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 +