Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Hazardia squarrosa

Hazardia squarrosa var. obtusa

saw-tooth bristleweed, saw-tooth goldenbush
Photo is of parent taxon

saw tooth goldenbush, sawtooth bristleweed
Habit Shrubs, 30–250 cm.
Stems

usually sparsely tomentose or pilose.

glabrous or scabrous.
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.

glabrous or sparsely puberulent, resinous.
Involucres

turbinate, 8–16 × 7–10 mm.

11–15 mm.
Ray florets

0.

Disc florets

9–30;

corollas 9–11 mm.

18–30;

corollas 10–11 mm.
Phyllaries

apically spreading to reflexed, oblong, apices with green area 1–2 mm, faces prominently stipitate-glandular (at least apically).

erect, margins usually glandular, apices ± obtuse-mucronate, faces glabrous, resinous.
Heads

borne in racemo-spiciform or glomerate-spiciform arrays.

Cypselae

5–8 mm, glabrous.

Hazardia squarrosa

Hazardia squarrosa var. obtusa
Phenology Flowering Sep–Nov.
Habitat Dry canyons, usually with Quercus, Pinus, Arctostaphylos, Ceanothus, Eriogonum
Elevation 600–1200 m (2000–3900 ft)
Distribution
from FNA
CA; nw Mexico
[WildflowerSearch map]
[BONAP county map]
from FNA
CA
[BONAP county map]
Discussion

Varieties 3 (3 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Leaves sparsely puberulent, not resinous; involucres 8–12 mm; disc florets 9–16, corollas 9–10 mm
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
var. obtusa
2. Stems distally sparsely hairy or glabrescent; phyllaries recurved, obtuse to acute, glandular
var. squarrosa
Source FNA vol. 20, p. 448. FNA vol. 20, p. 448.
Parent taxa Asteraceae > tribe Astereae > Hazardia Asteraceae > tribe Astereae > Hazardia > Hazardia squarrosa
Sibling taxa
H. brickellioides, H. cana, H. detonsa, H. orcuttii, H. stenolepis, H. whitneyi
H. squarrosa var. grindelioides, H. squarrosa var. squarrosa
Subordinate taxa
H. squarrosa var. grindelioides, H. squarrosa var. obtusa, H. squarrosa var. squarrosa
Synonyms Haplopappus squarrosus H. obtusa, Haplopappus squarrosus subsp. obtusus
Name authority (Hooker & Arnott) Greene: Erythea 2: 112. (1894) (Greene) Jepson: Man. Fl. Pl. Calif., 1030. (1925)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers