Flora of North America species comparison

The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Hymenopappus flavescens

collegeflower, yellow woollywhite
Habit Biennials, 30–90 cm.
Leaves

basal 2-pinnate, 6–15 cm, lobes 3–15(–20+) × 1–6 mm;

cauline 10–50.
Ray florets

0.
Disc florets

20–40;

corollas yellow, 2.5–3.5 mm, tubes 1.5–2 mm, throats campanulate, 0.8–1.5 mm, lengths 1–1.5 times lobes.
Phyllaries

yellowish, 4–8 × 2–4 mm.
Heads

15–100 per stem.
Cypselae

3–4.5 mm, ± villous;

pappi of 16–22 scales 0.5–1.5 mm.
Pedun

-cles 1–6 cm.

Hymenopappus flavescens
Distribution
from FNA
CO; KS; NM; OK; TX; n Mexico
[WildflowerSearch map]
[BONAP county map]
Discussion

Varieties 2 (2 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Lobes of basal leaves (1–)2–6 mm wide, abaxial faces glabrous or less hairy than adaxial; pappi 0.5–1(–1.5) mm
var. flavescens
1. Lobes of basal leaves 1–2 mm wide, abaxial and adaxial faces ± equally hairy; pappi 1–1.5 mm
var. canotomentosus
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. mexicanus, H. newberryi, H. radiatus, H. scabiosaeus, H. tenuifolius
Subordinate taxa
H. flavescens var. canotomentosus, H. flavescens var. flavescens
Name authority A. Gray: Mem. Amer. Acad. Arts, n. s. 4: 97. (1849)
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).



Type/paste one or more Latin names into the boxes above; matching taxa will show up below the box as you type. You can use the up/down arrow keys to move through the list.

(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Apiaceae, Boraginaceae, and Polemoniaceae.)

Choose a data source: Flora of North America

The species comparison tool is brought to you by:
Northwest Wildflowers