Hymenopappus scabiosaeus
Hymenopappus, plate. 1788.
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
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"
introrse +
connate +
herbaceous +
scarious +
absent +
hirsute +
papillate +
corymbiform +
continuous +
decurrent +
toothed +
1-2+ times pinnately lobed ultimate margins usually entire +
winged;ribbed;winged;ribbed +
1;15 +
stigmatic +
absent +
zygomorphic +
whitish +
monomorphic +
12-16-ribbed +
dimorphic +
hirtellous +
obpyramidal +
3mm;5mm +
staminate +
straight +
distinct +
proximal +
1;5 +
bisexual +
dispersed +
singly +
discoid +
aggregated +
indeterminate +
40;100 +
surrounding +
obconic;hemispheric +
petiolate +
alternate +
2-carpellate +
inferior +
attached +
anatropous +
persistent +
falling +
absent +
tough +
thick +
absent +
connate +
scarious-margined +
persistent +
distinct +
falling +
subequal +
Hymenopappus, plate. +
1788 +
pistillate +
absent +
fertile +
epaleate +
convex;flat +
fibrous +
exalbuminous +
modifed +
2;3 +
alternate +
erect +
scapiform +
2-branched +
papillate +
Hymenopappus scabiosaeus +
Hymenopappus +
species +
1 times lobes +
equaling +
longer +
biennial +