Pyrrocoma hirta

(A. Gray) Greene

Erythea 2: 69. 1894.

Common names: Tacky goldenweed
Endemic
Basionym: Haplopappus hirtus A. Gray in A. Gray et al., Syn. Fl. N. Amer. 1(2): 127. 1884 (as Aplopappus)
Treatment appears in FNA Volume 20. Treatment on page 417. Mentioned on page 414.

Plants 10–60 cm. Stems 1–4, erect or ascending, reddish, sometimes sparsely leafy, sparsely to densely villous, tomentose, or woolly, usually stipitate-glandular distally. Leaves: basal petiolate, blades lanceolate to oblanceolate or elliptic, 40–200 × 8–45 mm, margins usually coarsely, sharply serrate, sometimes entire, frequently stipitate-glandular, sometimes ciliate, apices acute, faces villous to tomentose, sometimes stipitate-glandular; cauline petiolate, lanceolate, 15–75 × 3–20 mm, becoming sessile and reduced distally, bases clasping. Heads usually 3–7 in loose, racemiform arrays, rarely borne singly (short or long-pedunculate). Involucres hemispheric to campanulate, 7–12 × 8–20 mm. Peduncles 1–4 cm. Phyllaries in 2–3 series, loose or appressed, green throughout or only distally (bases chartaceous), linear-lanceolate, unequal to subequal, apices acute, faces villous to tomentose, sometimes stipitate-glandular. Ray-florets 10–34; corollas 6–15 mm. Disc-florets 30–60; corollas 5–7 mm. Cypselae subcylindric, 3–4.5 mm, 3–4-angled, faces striate, sericeous-strigose; pappi whitish to tawny, 5–7 mm.

Distribution

V20-958-distribution-map.gif

Calif., Idaho, Nev., Oreg., Utah, Wash.

Discussion

Varieties 3 (3 in the flora).

Pyrrocoma hirta is recognized by its relatively short stature, villous, glandular-stipitate stems, lanceolate, coarsely serrate leaves, and loose, racemiform arrays. R. A. Mayes (1976) suggested that it is closely related to P. lanceolata. Much overlap occurs in the characters used to differentiate the varieties.

Selected References

None.

Key

1 Stems villous or tomentose, ± woolly, sparsely stipitate-glandular; phyllaries appressed, unequal, green only distally Pyrrocoma hirtavar. lanulosa
1 Stems glabrate or sparsely villous, densely stipitate-glandular; phyllaries loose, subequal, green throughout > 2
2 Basal leaves 50–200 × 15–45 mm, faces glabrate to sparsely villous; involucres 8–12 × 12–20 mm Pyrrocoma hirta var. sonchifolia
2 Basal leaves 40–80(–160) × 10–30 mm, faces densely villous; involucres 7–11 × 8–15 mm Pyrrocoma hirta var. hirta

"[" is not declared as a valid unit of measurement for this property."[" is not declared as a valid unit of measurement for this property.

... more about "Pyrrocoma hirta"
not tailed +, rounded +  and obtuse +
distinct +
acute;acute +
subequal +
scarious +
usually triangular +  and linear +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
David J. Bogler +
(A. Gray) Greene +
oblanceolate +
serrate or shallowly laciniate +, spinulose-dentate +  and entire +
linear +  and elliptic +
attenuate +
3mm;30mm +
Haplopappus hirtus +
compound +  and simple +
4 cm40 mm <br />0.04 m <br /> (20 cm200 mm <br />0.2 m <br />) +
lanceolate;oblanceolate or elliptic +
0.8 cm8 mm <br />0.008 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
rugulose +  and muricate +
barbellulate +  and barbellate +
sessile +  and petiolate +
1.5 cm15 mm <br />0.015 m <br /> (7.5 cm75 mm <br />0.075 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
Tacky goldenweed +
not 2-lipped +  and actinomorphic +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
beaked +, 2-ribbed +  and 5-ribbed +
3-4-angled +  and subcylindric +
fertile +  and bisexual +
fertile +  and bisexual +
Calif. +, Idaho +, Nev. +, Oreg. +, Utah +  and Wash. +
sericeous-strigose +, stipitate-glandular +, villous +  and tomentose +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and disciform +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
hemispheric;campanulate +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
deltate +
entire +  and serrate +
linear +  and elliptic +
stipitate-glandular +
attenuate +
3mm +  and 30mm +
2-carpellate +
whitish +  and tawny +
persistent +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
appressed +  and loosely spreading +
linear-lanceolate +
unequal +  and subequal +
bearing subulate enations +, hairy +  and bristly +
exalbuminous +
ascending +  and erect +
stipitate-glandular +, woolly +, tomentose +  and villous +
1 +  and 4 +
appendaged +  and truncate +
papillate +  and smooth +
Haplopappus sect. Pyrrocoma +
Pyrrocoma hirta +
Pyrrocoma +
species +
tubular-funnelform +
50 cm500 mm <br />0.5 m <br /> (90 cm900 mm <br />0.9 m <br />) +
stipitate-glandular +, glabrous +, tomentose +  and sericeous +
5 cm50 mm <br />0.05 m <br /> (50 cm500 mm <br />0.5 m <br />) +