Hymenopappus scabiosaeus

L’Héritier

Hymenopappus, plate. 1788.

Treatment appears in FNA Volume 21. Treatment on page 315. Mentioned on page 310.

Biennials, 40–150 cm. Leaves: basal simple (5–20 mm wide) or 1 (–2) -pinnate, 5–25 cm, lobes (3–) 5–20+ × (1–) 2–8+ mm; cauline 15–50. Heads (20–) 40–100 per stem. Peduncles 1–5 cm. Phyllaries white to yellowish, 5–15 × 2–8 mm. Ray-florets 0. Disc-florets 20–80; corollas whitish, 3–5.5 mm, tubes 2–3 mm, throats funnelform, 1–3 mm, lengths ± 1 times lobes. Cypselae 3–5 mm, ± hirtellous; pappi of 14–18 scales 0.1–1 mm.

Distribution

V21-775-distribution-map.gif

Ala., Ark., Fla., Ga., Ill., Ind., Kans., Miss., Mo., Nebr., Okla., S.C., Tex., n Mexico

Discussion

Varieties 2 (2 in the flora).

Morphologic distinctions between varieties of Hymenopappus scabiosaeus as treated by B. L. Turner (1956) fail for some specimens.

Selected References

None.

Key

1 Peduncles usually subtended by ± membranous bracts 5–14 × 3–10 mm; phyllaries whitish, 7–15 × 4–8 mm Hymenopappus scabiosaeus var. scabiosaeus
1 Peduncles not subtended by bracts, or bracts not membranous, 3–5+ × 1–3+ mm; phyllaries whitish to yellowish, 5–9 × 2–4 mm Hymenopappus scabiosaeus var. corymbosus
... more about "Hymenopappus scabiosaeus"
not tailed +, rounded +  and obtuse +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +
L’Héritier +
1(-2)-pinnate +  and simple +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
decurrent +
compound +  and simple +
toothed +
1-2+ times pinnately lobed ultimate margins usually entire +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
barbellulate +  and barbellate +
15 (?) +  and 50 (?) +
0.3 cm3 mm <br />0.003 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
obpyramidal +
fertile +  and bisexual +
fertile +  and bisexual +
Ala. +, Ark. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Miss. +, Mo. +, Nebr. +, Okla. +, S.C. +, Tex. +  and n Mexico +
tomentose +, hairy +  and glabrous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
discoid +  and radiate +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
obconic;hemispheric +
cauline +  and basal +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
deltate +  and filiform +
2mm +  and 8mm +
dentate to pinnatifid or palmatifid +  and entire +
2-carpellate +
persistent +
of 12 +  and 22 orbiculate to spatulate scales +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
scarious-margined +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
5 +  and 13 +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Hymenopappus, plate. +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
14 +  and 18 +
orbiculate +  and spatulate +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
exalbuminous +
scapiform +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Compositae +
Hymenopappus scabiosaeus +
Hymenopappus +
species +
1 times lobes +
campanulate +  and dilated +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
toothed +  and entire +
5 cm50 mm <br />0.05 m <br /> (20 cm200 mm <br />0.2 m <br />) +
40 cm400 mm <br />0.4 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
tree +, shrub +  and subshrub +