Flora of North America species comparison

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Hymenopappus artemisiifolius

oldplainsman, woolly-white
Habit Biennials, 40–100 cm.
Leaves

basal simple (5–20+ mm wide) or 1-pinnate, 8–20 cm, lobes 5–20+ × 1–5(–20+) mm;

cauline 2–16.
Peduncles

1–6 cm.
Ray florets

0.
Disc florets

40–60;

corollas white to purplish or yellowish to reddish, 3–5 mm, tubes 2–3 mm, throats funnelform, 1–1.5 mm, lengths 1–1.5 times lobes.
Phyllaries

whitish (sometimes red-tinged) or yellowish, 5–12 × 2–7 mm.
Heads

20–60 per stem.
Cypselae

3.5–5 mm, hirtellous or villous;

pappi of 16–18 scales 0.3–1(–1.5) or 1.5–2 mm.

Hymenopappus artemisiifolius
Distribution
from FNA
AR; LA; TX
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Cauline leaves (6–)8–16; phyllaries 6–12 mm; corollas whitish to purplish; pappi 0.3–1(–1.5) mm
var. artemisiifolius
1. Cauline leaves 2–8; phyllaries 5–7 mm; corollas yellowish to reddish; pappi 1.5–2 mm
var. riograndensis
Source FNA vol. 21, p. 314.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Hymenopappinae > Hymenopappus
Sibling taxa
H. biennis, H. carrizoanus, H. filifolius, H. flavescens, H. mexicanus, H. newberryi, H. radiatus, H. scabiosaeus, H. tenuifolius
Subordinate taxa
H. artemisiifolius var. artemisiifolius, H. artemisiifolius var. riograndensis
Name authority de Candolle: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 5: 658. (1836)
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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