Hieracium longipilum

Torrey ex Hooker

Fl. Bor.-Amer. 1: 298. 1833.

Endemic
Treatment appears in FNA Volume 19. Treatment on page 285. Mentioned on page 280.

Plants 30–75 (–200) cm. Stems proximally piloso-hirsute (hairs 6–15+ mm), distally piloso-hirsute (hairs 3–10+ mm), sometimes stellate-pubescent as well. Leaves: basal 3–8+, cauline (3–) 6–12+; blades oblanceolate, 45–80 (–250+) × 12–30 (–40+) mm, lengths 4–7+ times widths, bases cuneate, margins entire, apices rounded to acute, faces piloso-hirsute (hairs 3–8+ mm). Heads 10–20+ in paniculiform to nearly racemiform arrays. Peduncles stellate-pubescent and stipitate-glandular, sometimes piloso-hirsute as well. Calyculi: bractlets 9–13+. Involucres campanulate, 6–8 (–10) mm. Phyllaries 12–21+, apices acuminate, abaxial faces stellate-pubescent and stipitate-glandular. Florets 30–40 (–60); corollas yellow, ca. 7 mm. Cypselae urceolate, 3–4+ mm; pappi of 35–40+, stramineous to sordid bristles in 2+ series, 5.5–6.5 mm.


Phenology: Flowering Jul–Sep.
Habitat: Fields, prairies, roadsides
Elevation: 100–400 m

Distribution

V19-395-distribution-map.gif

Ont., Ark., Ill., Ind., Iowa, Kans., Ky., La., Mich., Minn., Mo., Nebr., Ohio, Okla., Tenn., Tex., Wis.

Discussion

Hieracium longipilum may be no longer present in Quebec.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Hieracium longipilum"
stipitate-glandular +  and stellate-pubescent +
acuminate;rounded;acute +
scarious +
ovate +  and lanceolate +
paniculiform +  and nearly racemiform +
indeterminate +  and determinate +
John L. Strother +
Torrey ex Hooker +
cuneate +
compound +  and simple +
8 cm80 mm <br />0.08 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4.5 cm45 mm <br />0.045 m <br /> (8 cm80 mm <br />0.08 m <br />) +
oblanceolate +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
tuberculate +, rugose +, muricate +  and smooth +
deltate;lanceolate or linear +
filiform +
stramineous +  and sordid +
6 (?) +  and 12 (?) +
zygomorphic +, actinomorphic +  and (3-)5-merous +
7 cm70 mm <br />0.07 m <br /> (?) +
black +  and redbrown +
urceolate +
Ont. +, Ark. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Mich. +, Minn. +, Mo. +, Nebr. +, Ohio +, Okla. +, Tenn. +, Tex. +  and Wis. +
100–400 m +
piloso-hirsute +
winged +  and beaked +
dispersed +
Fields, prairies, roadsides +
in corymbiform , paniculiform , thyrsiform , umbelliform or nearly racemiform , arrays +  and singly +
indeterminate +
each +  and sessile +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
campanulate +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
sessile +  and petiolate +
cauline +  and basal +
dentate +, denticulate +  and entire +
2-carpellate +
persistent +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
piloso-hirsute +, stipitate-glandular +  and stellate-pubescent +
not inflated +
Flowering Jul–Sep. +
connate +  and distinct +
12 +  and 21 +
subequal +  and unequal +
Fl. Bor.-Amer. +
flat;convex +
exalbuminous +
stellate-pubescent +  and piloso-hirsute +
scapiform +
appendaged +  and truncate +
papillate +
Pilosella +
Hieracium longipilum +
Hieracium +
species +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
20 cm200 mm <br />0.2 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
75 cm750 mm <br />0.75 m <br /> (200 cm2,000 mm <br />2 m <br />) +