Flora of North America species comparison

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Hymenopappus biennis

biennial woollywhite
Habit Biennials, 60–100 cm.
Leaves

basal 2-pinnate, 6–16 cm, lobes 6–20 × 1(–3) mm;

cauline 10–40.
Peduncles

1–6 cm.
Ray florets

8;

corollas white, laminae (6–)14–16 mm.
Disc florets

32–50+;

corollas yellowish, 3–3.5 mm, tubes 1.5 mm, throats campanulate, 1.5–2 mm, lengths 2–3 times lobes.
Phyllaries

yellowish, 5–8 × 3–5 mm.
Heads

20–40 per stem.
Cypselae

4 mm, glabrous;

pappi 0 or of scales 0.1–0.2 mm.
2n

= 34.

Hymenopappus biennis
Phenology Flowering Jul–Oct.
Habitat Limestone soils
Elevation 2000–3000 m (6600–9800 ft)
Distribution
from FNA
NM; TX
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 21, p. 314.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Hymenopappinae > Hymenopappus
Sibling taxa
H. artemisiifolius, H. carrizoanus, H. filifolius, H. flavescens, H. mexicanus, H. newberryi, H. radiatus, H. scabiosaeus, H. tenuifolius
Name authority B. L. Turner: Rhodora 58: 256, figs. 24, 38. (1956)
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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(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 Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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