Flora of North America species comparison

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Hymenopappus scabiosaeus

Carolina woollywhite, old plainsman
Habit 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.
Peduncles

1–5 cm.
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.
Phyllaries

white to yellowish, 5–15 × 2–8 mm.
Heads

(20–)40–100 per stem.
Cypselae

3–5 mm, ± hirtellous;

pappi of 14–18 scales 0.1–1 mm.

Hymenopappus scabiosaeus
Distribution
from FNA
AL; AR; FL; GA; IL; IN; KS; MO; MS; NE; OK; SC; TX; n Mexico
[WildflowerSearch map]
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Peduncles usually subtended by ± membranous bracts 5–14 × 3–10 mm; phyllaries whitish, 7–15 × 4–8 mm
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
var. corymbosus
Source FNA vol. 21, p. 315.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Hymenopappinae > Hymenopappus
Sibling taxa
H. artemisiifolius, H. biennis, H. carrizoanus, H. filifolius, H. flavescens, H. mexicanus, H. newberryi, H. radiatus, H. tenuifolius
Subordinate taxa
H. scabiosaeus var. corymbosus, H. scabiosaeus var. scabiosaeus
Name authority L’Héritier: Hymenopappus, plate. 1788
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).



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